JPH0952673A - Power conversion test device for power converter, power converter test device for power converter in elevator control device, and test method therefor - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To enable an energization test of a power conversion device to be performed by the power conversion device alone. SOLUTION: For vector control of the primary current of the induction motor 4 in the elevator control device 20, during the energization test, the current amplitude limiting means 30, 35 cause the vector control means 40 to have an exciting current component Id ^* of 0 and a torque current component. Iq ^* gives a current command limited so as to have a constant amplitude I _qLIMT, and the frequency setting means 37 gives a constant frequency command ω _s2 to the vector control means 40, and the vector control means 40 gives these current commands I _{qLIM. T} , AC current command I1 according to frequency command ω _s2
^{* Is given} to the power converter 8. This allows
A simple waveform, such as I1U ^* = I _qLIMT , during the energization test
-The power conversion characteristics of the power conversion device with respect to a current command such as sin ω _s2 can be viewed, and it is possible to easily determine whether the power conversion device is normal or abnormal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrification test device for a power converter that performs vector control of an alternating current output current to a load, an electrification test device for the electric power converter in an elevator controller, and an electrification test method thereof.

[0002]

2. Description of the Related Art Generally, an elevator control device has a structure as shown in FIG. In this conventional elevator control device, the speed instruction generator 1 outputs the speed instruction signal 1a for the car 2.
Is output to the speed control amplifier 3. The speed control amplifier 3 includes a speed signal 6a obtained by speed-converting a position signal 5a from a position detector 5 coupled to an induction motor 4 for driving a car by a position / speed converter 6, and a speed command generator 1 The speed command signal 1a is compared, and the current command 3a corresponding to the difference is output and given to the current control amplifier 7.

The current control amplifier 7 uses the current command 3a.
And a deviation from the current signal 8a of the current detector 8 which detects the current of the induction motor 4, and the load signal 9a from the unbalance torque command device 9 is added to this deviation and output as the power control signal 7a. Then, the power converter 10 supplies the power converter 10 with the power converter 10 and controls the power supplied to the induction motor 4 based on the power control signal 7a.

The induction motor 4 has a sheave 1 due to its rotational force.
1 is driven to rotate forward and backward, and the car 2 and the counterweight 13 connected to the rope 12 wound around the sheave 11 are moved up and down in a fishing bottle type.

A flooring device 14 is attached to the car 2, detects flooring detection plates 15A, 15B, ... Provided on each floor of the elevator hoistway, and outputs a flooring signal 14a to the speed command generator 1. The speed command generator 1 outputs the speed command signal 1a in response to the input of the landing signal 14a.

Further, the car 2 is provided with a load detector 16 which applies a load detection signal 16a to the unbalanced torque command device 9 so that the unbalanced torque command device 9 generates an unbalanced torque component with the counterweight 13. Is generated and supplied to the current control amplifier 7.

By the way, in recent years, with the development of microcomputer technology, digital control by a microcomputer has been widely adopted for elevator control.
Also in the conventional elevator control device shown in FIG. 1, the elements surrounded by the broken line, that is, the speed command generation unit 1, the speed control amplifier 3, the position / speed converter 6 and the current control amplifier 7 are removed, and a microcomputer is used instead. 17 is used to perform those functions.

[0008]

In such a conventional elevator controller, what is particularly important is the power converter 10.
The power conversion device 10 is generally an element of GTO and I
Although it is composed of a power semiconductor element such as GBT that can be forcibly extinguished, if the semiconductor element is damaged during driving of the elevator, electric power cannot be supplied to the electric motor 4, and passengers in the elevator car are confined. It may lead to an accident. Therefore, the power conversion device 10 is required to have high reliability.

Therefore, conventionally, to such a power conversion device 10, in addition to the test of other constituent elements, the current necessary for driving the elevator is actually applied to the power conversion device 10 to detect a defect of semiconductor element or wiring. Tests have been conducted to eliminate structural defects in advance.

As this energization test method, a method of actually driving an elevator and applying a current to the power conversion device,
There is a method in which a load such as an AC reactor is connected only to the control device and an arbitrary current suitable for the convenience of use of the elevator is supplied. The former test method is a large-scale energization test for the power conversion device, and there is a problem that the test work needs to be performed at the elevator installation site, which requires too much labor and time.

Therefore, the latter test method is generally used, but in order to carry out this test, conventionally, a test device such as an oscillator capable of changing the command value of the current outside the control device. The power conversion device is energized and connected to the power converter, and the test work is too time-consuming.

The present invention has been made in view of the above conventional problems, and it is possible to carry out an energization test of a power conversion device without connecting a special device outside the vector control means. It is an object of the present invention to provide an electric current test device.

The present invention also provides an electrification test device for an electric power converter in an elevator control device, which is capable of conducting an electrification test on an electric power converter installed in the elevator control device without connecting any special test equipment to the outside. The purpose is to

Further, according to the present invention, a power conversion device mounted on an elevator control device is subjected to an energization test of the power conversion device even when the elevator is abnormally stopped and stopped midway between floors. It is an object of the present invention to provide a method for conducting an electric current test of a power conversion device in an elevator control device, which can confirm safety and restart operation.

[0015]

According to a first aspect of the present invention, there is provided a power conversion device for a power conversion device, the power conversion device supplying a load with a variable voltage and a variable frequency alternating current, and the load supplying power from the power conversion device. Vector control means for performing vector control of the AC output current to be performed, energization test command means for instructing an energization test of the power conversion device, and the vector control means for energizing test when the energization test command means Amplitude limiting means for limiting the amplitude of the command output current given to the power converter to a predetermined value, and the command output current given to the power converter by the vector control means when the energization test command means instructs the energization test. And a frequency setting means for setting the frequency to a predetermined value.

In the energization test device for a power converter according to the present invention, the AC current output from the power converter to the load is converted into an exciting current component and a torque current component by controlling the power converter by the vector control means. Separate and control each. When conducting the energization test of the power conversion device, the energization test command means inputs the energization test command so that the amplitude limiting means sets the amplitude of the command output current given from the vector control means to the power conversion device to a predetermined amplitude. In addition, the frequency setting means sets the frequency of the command output current given to the power converter from the vector control means to a predetermined value. Therefore,
In the energization test, it is possible to determine the abnormality of the power conversion device by measuring the amplitude and frequency of the output current of the power conversion device and comparing with the preset amplitude and frequency. Therefore, the energization test of the power converter is not performed after the power converter is installed in the field and connected to the original load, for example, an induction motor for driving an elevator. Can be carried out.

According to a second aspect of the present invention, in the energization test device for the power converter according to the first aspect, the current amplitude limiting means comprises:
An exciting current component is set to 0 and a current command in which the torque current component is limited to a constant amplitude is given to the vector control means,
The frequency setting means gives a constant frequency command to the vector control means.

In the energization test device for the power converter of the present invention, the current amplitude limiting means limits the exciting current component to the vector control means during the energization test so that the exciting current component becomes 0 and the torque current component has a constant amplitude. Further, the frequency setting means gives a constant frequency instruction to the vector control means, and the vector control means gives an alternating current instruction corresponding to the current instruction and the frequency instruction to the power converter. Therefore, the power conversion characteristic of the power conversion device with respect to the current command having a simple waveform can be seen during the energization test, and it becomes possible to easily determine whether the power conversion device is normal or abnormal.

According to a third aspect of the present invention, in the energization test device for the power converter according to the first or second aspect, an induction motor is connected as the load, and the induction motor is connected to the induction motor when the energization test command means instructs the energization test. It is provided with a brake control means for applying a brake.

In the energization test device for the electric power converter according to the present invention, the energization test is carried out with the induction motor being braked so that the rotational angle position and the rotational speed of the induction motor as a load are set to zero. It is possible to carry out the energization test of the power converter in the state, and it is easy to set the current command given from the current amplitude limiting means to the vector control means and the frequency command given from the frequency setting means to the vector control means. It is easy to carry out the electricity test of the converter.

According to a fourth aspect of the present invention, there is provided an electrification test apparatus for a power converter in an elevator control apparatus, wherein the induction motor has a variable voltage,
A power conversion device for supplying alternating current of a variable frequency, a vector control means for performing vector control of an AC output current to be supplied to the load from the power conversion device, and a conduction test for instructing a conduction test of the power conversion device. A command means, a brake control means for braking the induction motor when the energization test command means issues an energization test, and a vector control means for converting the power when the energization test command means gives an energization test. Amplitude limiting means for limiting the amplitude of the command output current given to the device to a predetermined value, and the frequency of the command output current given to the power converter by the vector control means when the energization test command means gives an instruction for the energization test. And a frequency setting means for setting a predetermined value.

In the electrification test device for the electric power converter of the elevator control device according to the present invention, the electrification test of the electric power converter used for the elevator control device is performed by simply inputting the electrification test command by the electrification test command means. This can be done without connecting external special test equipment to the device.

According to a fifth aspect of the present invention, in the electrification test device for the power converter in the elevator control device according to the fourth aspect, the current amplitude limiting means sets the exciting current component to 0 in the vector control means, and the torque current component. Is given a current command that is limited to a constant amplitude, the frequency setting means,
A constant frequency command is given to the vector control means.

In the energization test device for the power converter in the elevator control device according to the present invention, the current amplitude limiting means causes the vector control means to have no exciting current component during the energization test.
Then, the current command limited so that the torque current component has a constant amplitude is given, the frequency setting means gives a constant frequency instruction to the vector control means, and the vector control means responds to these current instructions and frequency instructions. An alternating current command is given to the power converter. Therefore, during the energization test, the power conversion characteristics of the power conversion device with respect to the current command having a simple waveform can be viewed, and it is possible to easily determine whether the power conversion device is normal or abnormal. Moreover, since the induction motor is braked during the energization test, it is possible to carry out the energization test of the power conversion device with its rotational position and speed set to 0, and to set the current command given from the current amplitude limiting means to the vector control means. Further, it is easy to set the frequency command given from the frequency setting means to the vector control means, which facilitates the energization test work of the power conversion device.

According to a sixth aspect of the present invention, there is provided an electrification test method for an electric power converter of an elevator control device, wherein the induction motor is braked when the elevator is stopped midway between floors due to a protective operation. The energization test is executed according to, and when there is no abnormality, the induction motor is restarted to move the elevator to the nearest floor.

In the electrification test method for the electric power converter of the elevator control device according to the present invention, an accident in which the elevator is stopped midway between floors due to some abnormality and passengers are trapped in the car If an abnormality occurs, a power-on test is performed on the spot to check if there is any abnormality in the power converter, and if there is no abnormality, rescue operation can be performed by driving to the nearest floor and unloading passengers. It is possible to respond safely and promptly.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail with reference to the drawings. FIG. 1 shows one embodiment of the present invention,
Elements common to the conventional elevator apparatus shown in FIG. 6 are designated by the same reference numerals. The feature of this embodiment resides in an elevator controller 20 equipped with a microcomputer. The elevator controller 20 executes a variety of arithmetic control processing for elevator control, and this microcomputer 21.
ROM 22 for storing programs executed by the CPU and EEPROM for storing various adjustment data necessary for calculation
23 and RA for temporarily storing the contents of the operation result
An M24, an input interface (I / F) 25 for reading an input signal, and an output interface (I / F) 26 for outputting an output signal are provided, and these units are connected to each other via a data bus line 27. It is a composition.

The elevator control device 20 controls the variable voltage variable frequency (VVVF) power conversion device 10 to control the induction motor 4 for driving the elevator to perform elevator operation control. And for this purpose, the induction motor 4
The position signal 5a from the position detector 5, the current signal 8a from the current detector 8 that detects the primary current supplied from the power converter 10 to the induction motor 4, the landing detection signal 14a from the landing device 14 of the car 2, Load signal 16a from load detector 16
Is input to the unbalanced torque command unit 9 and the unbalanced torque command obtained is input to the elevator controller 20 through the input interface 25, and the current conversion command 41a obtained by the vector control calculation process described below is input to the power converter 10.
The data is output through the output interface 26.

An energization test switch 18 is installed to input an energization test command from the outside, and a brake operation command 42a is output to the brake control unit 19 for the induction motor 4. .

The slip frequency vector control processing function of the power converter 10 executed by the microcomputer 21 of the elevator controller 20 has the configuration shown in FIG. The elevator control device 20 has, as arithmetic processing function blocks, a speed command calculation unit 30 that receives an elevator position detection signal 5a and a landing signal 14a to calculate a speed command 30a corresponding to the elevator position, and an external technology for conducting a power test. A person inputs an energization test command to output an energization command signal 31a, and an energization execution identification calculator 31 and externally preset signals I _Φ1 and I _Φ2 are applied to the energization command signal 3.
The excitation current calculation unit 32 that switches by 1a and outputs as the signal Id ^* of the excitation current component, and the rotation angle position signal θr detected by the position detector 5 (corresponding to the position signal 5a in FIG. 1) are converted into the speed signal 34a. It has a position / speed conversion calculation unit 34, and a speed control calculation unit 33 that performs a proportional integral calculation of the deviation between the speed command 30a and the actual speed 34a and outputs a signal 33a corresponding to the torque current component.

The elevator control device 20 further includes, as an arithmetic processing function block, a limit processing arithmetic unit 35 that limits the torque current component signal 33a to the signal I _qLIMT by the energization test command 31a and outputs the torque current component signal Iq ^* . A slip frequency calculation unit 36 that calculates a slip frequency ω _s1 from the excitation current component Id ^* , the torque current component Iq ^*, and the secondary time constant signal T2 of the motor that is externally set, and this slip frequency signal ω _s1 and external The slip frequency command signal ω _s2 at the time of the energization test, which is set to, is switched by the energization test signal 31a and outputs as the slip frequency command ω _s , and the slip frequency command ω _s is integrated to perform the slip. The integral calculation unit 38 for calculating the rotation angle θs, the slip rotation angle θs, and the rotation angle position signal θr from the position detector 5 are added. Rotation angle signal Te theta (this is the vector control is the rotation angle of the secondary flux) and an adder 39 which outputs as a.

The elevator control device 20 further functions as an arithmetic processing function block and further includes an exciting current component Id ^* from the exciting current arithmetic unit 32, a torque current component Iq ^* from the limit processing arithmetic unit 35, and a rotation angle signal from the addition arithmetic unit 39. θ and the primary current command signal I1 ^* (here,
U, V, W-phase each current instruction value I _1U of ^*, I _1V ^*, the vector operation unit 40 for calculating a and are) called collectively the I _1W ^* I1 ^*, and the primary current command signal I1 ^* It has a current control calculation unit 41 that performs a proportional integration calculation process on the deviation from the current detection signal 8a from the current detector 8 and outputs it as a power conversion command 41a to the power conversion device 10.

Next, the electric power conversion control process of the elevator control device 20 in the elevator device having the above configuration will be described.

During normal operation During the normal operation of the elevator, the energization test command is not input to the energization execution identification calculator 31. Therefore, the energization test signal 31a is not output from the energization test command 31a, and the speed command calculator 30 does not send the regular elevator speed command. 30a is output. Since the energization test signal 31a is not input to the exciting current calculation unit 32, the signal I _{Φ 1} preset from the outside is directly output as the exciting current component Id ^* .

The speed control calculation unit 33 uses the speed command signal 30a.
And a speed signal 34a are proportionally integrated to output a signal 33a corresponding to the torque command value of the induction motor 4.
That is, as shown in FIG. 3, when the actual speed signal 34a is the one shown in FIG. 3B with respect to the speed command 31a shown in FIG. Integral calculation is performed to generate and output a torque command signal 33a as shown in FIG. This is an example when the elevator is in balanced load.

The limit processing operation unit 35 uses the energization test signal 3
Since there is no 1a, the torque command signal 33a obtained by the speed control calculation unit 33 is directly output as the torque current component Iq ^* . The slip frequency calculation unit 36 includes the excitation current calculation unit 3
The excitation current component Id ^* from 2 and the torque current component Iq ^* from the limit processing calculator 35 and the secondary time constant T2 preset from the outside for each induction motor 4 are input, and the slip is calculated by the following formula 1. The frequency command ω _s1 is calculated and output.

[0037]

[Equation 1] Since the slip frequency selection calculation unit 37 does not have the energization test signal 31a, it outputs the slip frequency command ω _{s1 as it} is as the slip frequency command ω _s .

The integral calculation unit 38 integrates the slip frequency command ω _s as in the following equation 2 and outputs the slip rotation angle θs.

[0039]

[Equation 2] Therefore, the addition calculation unit 39 adds the rotation angle position signal θr from the position detector 5 and the slip rotation angle θs from the integration calculation unit 38 and outputs the rotation angle θ.

[0040]

[Mathematical formula-see original document] [theta] = [theta] r + [theta] s In response to the calculation processing results of the above elements, the vector calculation unit 40 calculates the exciting current component Id ^* , the torque current component Iq ^* , and
Input the rotation angle θ and U of the motor primary current command value I1 ^* ,
The current command values I _1U ^* , I _1V ^* , and I _1W ^* for each of the V and W phases are calculated based on the following equation (4) and output to the current control calculation unit 41.

[0041]

(Equation 4) The above relationship is illustrated in FIG.

In the current control calculation unit 41, the deviation between the motor primary current command value I1 ^* output from the vector calculation unit 40 and the current detection signal 8a from the current detector 8 for detecting the primary current of the induction motor 4 is proportional. Integral calculation and power conversion device 1
0 as the power conversion command signal 41a. Therefore, the power conversion device 10 supplies the power corresponding to the power conversion command signal 41a to the induction motor 4, and the elevator accelerates according to a predetermined speed reference pattern output from the speed command 30 as shown in FIG. It moves at a constant speed and deceleration operation to the destination floor and then stops.

When conducting the energization test during the energization test, an engineer operates the energization test switch 18 from the outside to input an energization test command to the energization execution identification calculator 31. In response to this, the energization execution identification calculator 31 sends the energization test command 31a to the speed command calculator 30, the exciting current calculator 32, the limit processing calculator 35,
It is given to the slip frequency selection calculation unit 37. In addition, the brake control unit 19 for the electric motor 4 is input by inputting the energization test command.
In response to this, a command 42a for keeping the brake closed is output.

The speed command calculation unit 30 uses the energization test command 31a.
In response, the inspection speed command for the elevator, which is much slower than the normal operation speed command, is output as the speed command 30a. The speed control calculation unit 33 performs proportional integral calculation on the deviation between the speed command 30a and the actual speed signal 34a fed back from the position detector 5 of the electric motor 4 via the position / speed conversion calculation unit 34. In the proportional-plus-integral calculation executed by the speed control calculation unit 33, the rotation angle position signal θr is generated because the electric motor 4 is braked in the energization test.
Is 0, and the speed signal 34a obtained therefrom is also 0. Therefore, the output 33a of the proportional-plus-integral calculation has a constant slope on one side (this slope is determined by the time constant of integration).
Swing in.

The limit processing calculation unit 35 uses the energization test command 3
1a, the signal I _qLIMT externally set to the output 33a of the speed control calculation unit 33 is _received.
Limit processing is performed with the value of and the constant value I _qLIMT is output as the torque current component I _q ^* .

On the other hand, when the excitation current calculator 32 receives the energization test command 31a, the signal _IΦ2 set from the outside is supplied.
Is output as the excitation current component Id ^* . Here, if the setting is made so that _IΦ2 = 0 in advance, the exciting current component Id ^* = 0 can be obtained.

Upon receipt of the energization test command 31a, the slip frequency selection calculation unit 37 outputs not the signal ω _s1 from the slip frequency calculation unit 36 but the externally provided signal ω _s2 as the slip frequency ω _s , and the integration calculation unit 38 performs an integral calculation of this slip frequency ω _s and outputs the slip rotation angle θ _s ,
The addition calculation unit 39 receives the slip rotation angle θ from the integration calculation unit 38.
The rotation angle position θr of the electric motor 4 is added to s, and θ is obtained and given to the vector calculation unit 40. Also in this case, the electric motor 4 is still stopped by the brake, so that the rotation angle position θ
r is 0, and θ = θs.

The vector calculation unit 40 calculates the exciting current component Id ^* from the above exciting current calculation unit 32 and the limit processing calculation unit 3
5 from the torque current component Iq ^* from θ and θ from the addition calculation unit 39
And the primary current command value of the motor based on
Calculate I1 ^* . However, now, the exciting current component Id ^*
= I _.phi.2 = 0, because the torque current component _{^{Iq * = I qLIMT, | Iq}} * | = I qLIMT _{next, θr = 0, θ 01 =} 0 Since theta ^* = [theta] s, and the above number 4 expression follows It becomes as simple as the formula of Equation 5.

[0049]

(Equation 5) This means that the amplitude of the primary current command value during the energization test is I _qLIMT , and the frequency can be controlled by the value of ω _s2 , and the energization test of the power conversion device 40 can be performed according to this current command value. it can. Therefore, the output waveform of the power conversion device 40 can be measured, and whether the waveform is as shown in FIG.

In the above embodiment, the setting values of I _Φ1 , I _Φ2 , I _qLIMT , ω _s2, etc. given from the outside are written in the EEPROM 23 of the elevator control device 20 to make it versatile. be able to.

Further, the above-mentioned embodiment is an electrification test device for the electric power converter 10 for the induction motor 4 in the elevator device. However, if the electrification test device is installed in the elevator, the elevator is actually in the middle of the floor. If a passenger's containment accident occurs due to a stoppage at the station, it is judged whether the power converter is normal or abnormal, and if it is normal, the elevator is restarted and the passenger tries to rescue the passenger by rescue operation to the nearest floor at low speed. In this case, a method of restarting the rescue operation can be performed by first conducting an energization test of the power conversion device 10 with the above-described energization test device while keeping the brake closed in that case. .

On the contrary, when the power converter is not installed in the actual equipment of the elevator and an energization test of the power converter is to be performed before shipment from the factory, only the elevator controller 20 and the power converter 10 are used and the power converter 10 is operated. It is also possible to connect a reactor instead of the induction motor 4 as a load and similarly perform the energization test of the power conversion device.

[0053]

According to the energization test device of the power converter of the first aspect, the alternating current output from the power converter to the load is controlled by the exciting current component and the torque by controlling the power converter by the vector control means. Separated into current components and controlling each, during the energization test of the power converter,
By inputting the energization test command by the energization test command means, the amplitude limiting means limits the amplitude of the command output current given to the power converter from the vector control means to a predetermined amplitude, and the frequency setting means sets the vector. Since the frequency of the command output current given to the power converter from the control means is set to be a predetermined value,
In the energization test, it is possible to determine the abnormality of the power converter by measuring the amplitude and frequency of the output current of the power converter and comparing it with the preset amplitude and frequency. Instead of installing the power converter on site and connecting it to the original load, for example, an induction motor for driving an elevator, the power converter can perform the energization test by itself at the time of factory shipment.

According to the energization test device of the power converter of the second aspect, during the energization test, the current amplitude limiting means limits the exciting current component to the vector control means so that the exciting current component becomes 0 and the torque current component has a constant amplitude. The current command is given, and the frequency setting means gives a constant frequency command to the vector control means, and the vector control means is adapted to give these current commands and alternating current commands corresponding to the frequency commands to the power converter. During the energization test, you can see the power conversion characteristics of the power converter with respect to the current command with a simple waveform.
It is possible to easily determine whether the power conversion device is normal or abnormal.

According to the energization test device for the power converter of the third aspect, the energization test is performed with the induction motor being braked. Therefore, the rotation angle position and the rotation speed of the induction motor as a load are set. It is possible to carry out the energization test of the power conversion device with 0 set to 0, and it is easy to set the current command given from the current amplitude limiting means to the vector control means and the frequency command given from the frequency setting means to the vector control means. Therefore, it is easy to carry out the energization test work of the power converter.

According to the electrification test device for the electric power converter in the elevator controller of the present invention, the electrification test of the electric power converter used for the elevator controller is performed by connecting an external special test device to the electric power converter. Instead, it can be performed simply by inputting the energization test command by the energization test command means.

According to the energization test apparatus for the power converter in the elevator control apparatus of the fifth aspect, the current amplitude limiting means causes the vector control means to have no exciting current component during the energization test.
Then, the current command limited so that the torque current component has a constant amplitude is given, the frequency setting means gives a constant frequency instruction to the vector control means, and the vector control means responds to these current instructions and frequency instructions. Since the AC current command is given to the power converter, the power conversion characteristics of the power converter with respect to the current command of a simple waveform can be seen during the energization test, and it is easy to determine whether the power converter is normal or abnormal. Moreover, since the induction motor is braked during the energization test, its rotational position and speed can be reduced to 0.
It is possible to carry out the energization test of the power conversion device in the state of being set, and it is easy to set the current command given from the current amplitude limiting means to the vector control means and the frequency command given from the frequency setting means to the vector control means. , It is easy to carry out the energization test work of the power converter.

According to the electrification test method for the electric power converter of the elevator control device of the sixth aspect, an accident in which the elevator is stopped midway between floors due to some abnormality and the passengers are trapped in the car If it does occur, conduct a current test on the spot to check if there is any abnormality in the power converter, and if there is no abnormality, you can perform rescue operation to drive to the nearest floor and unload passengers, resulting in a confinement accident. It is possible to respond safely and promptly.

[Brief description of drawings]

FIG. 1 is a block diagram of one embodiment of the present invention.

FIG. 2 is a functional block diagram of an elevator control device portion of the above embodiment.

FIG. 3 is a waveform diagram showing an arithmetic processing function of the speed control arithmetic unit of the above embodiment.

FIG. 4 is a graph showing the arithmetic processing function of the vector arithmetic unit of the above embodiment.

FIG. 5 is an output waveform diagram of the vector operation unit during the energization test of the above embodiment.

FIG. 6 is a block diagram of a conventional example.

[Explanation of symbols]

 2 car 4 induction motor 5 position detector 8 current detector 9 unbalanced torque command unit 14 landing device 16 load detector 18 energization test switch 19 brake control unit 20 elevator control device 21 microcomputer 22 ROM 23 EEPROM 24 RAM 25 input Interface 26 Output interface 27 Data bus line 30 Speed command calculation unit 31 Energization execution identification calculation unit 32 Excitation current calculation unit 33 Speed control calculation unit 34 Position / speed conversion calculation unit 35 Limit processing calculation unit 36 Slip frequency calculation unit 37 Slip frequency selection Calculation unit 38 Integration calculation unit 39 Addition calculation unit 40 Vector calculation unit 41 Current control calculation unit

Claims (6)

[Claims] 1. A power converter for supplying a variable voltage and a variable frequency alternating current to a load, vector control means for performing vector control of alternating current power to be supplied to the load from the power converter, and the power converter. An energization test command means for instructing an energization test of the device, and an amplitude for limiting the amplitude of the command output current given to the power conversion device by the vector control means to a predetermined value when the energization test command means instructs the energization test. A power conversion device comprising: a limiting device; and a frequency setting device that sets a frequency of a command output current given to the power converter by the vector control device to a predetermined value when the energization test command device gives an instruction for a current test. Equipment energization test equipment. 2. The current amplitude limiting means gives the vector control means a current command in which the exciting current component is set to 0 and the torque current component is limited to a constant amplitude, and the frequency setting means gives the vector control means. The power-on test apparatus for a power converter according to claim 1, wherein a constant frequency command is given to the power converter. 3. An induction motor is connected to the power converter as the load, and a brake control means is provided for braking the induction motor when the energization test command means instructs an energization test. Claim 1 or 2
An energization test device for the described power converter. 4. An induction motor for driving an elevator, a power converter for supplying a variable voltage and a variable frequency AC to the induction motor, and an AC output current to be supplied from the power converter to the induction motor. Vector control means for performing vector control, energization test command means for instructing an energization test of the power converter, brake control means for braking the induction motor when the energization test command means directs an energization test, and When the energization test command means instructs the energization test, the vector control means limits the amplitude of the command output current given to the power conversion device to a predetermined value, and the energization test command means instructs the energization test. Frequency setting means for setting the frequency of the command output current given to the power converter by the vector control means to a predetermined value when An electrification test device for a power conversion device in an elevator control device comprising: 5. The current amplitude limiting means gives the vector control means a current command in which the exciting current component is set to 0 and the torque current component is limited to a constant amplitude, and the frequency setting means gives the vector control means. A constant frequency command is given to the power-supply test apparatus for the power converter in the elevator controller according to claim 4. 6. When there is no abnormality, the induction motor is braked when the elevator is stopped midway between floors due to a protective operation, and an electrification test is performed by the electrification test device according to claim 4. A method for conducting a current test of a power conversion device in an elevator control device, comprising: restarting the induction motor to move the elevator to the nearest floor.