JPH0367883A - Power interruption time operating device of elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to an improvement in an elevator operation device during a power outage.

[Prior Art] In recent years, inverters have been used to control electric motors that drive double-sided blades for purposes such as reducing power consumption. , a power outage system that does not require a particularly complex inverter control device for operation during a power outage, and does not require an isolated DC-DC converter or constant voltage circuit for each control power source that must be supplied during a power outage. An hourly operating device has been proposed.

FIG. 2 is a circuit diagram of a conventional elevator operating device during a power outage, which is disclosed in, for example, Japanese Patent Application Laid-open No. 183477/1983. In the figure, (1> is a three-phase AC commercial power source that is a power source,
1A> is a single-phase power supply for AClooV lighting, (2) is a normally open contact of a running contactor during normal power supply that is excited when the elevator is running, (3) is a converter that converts three-phase AC voltage to DC voltage, (4) is a capacitor that smoothes the output voltage of converter (3), (5) is an inverter that converts DC voltage into variable voltage, variable frequency three-phase AC voltage, (6> is an induction motor for driving the elevator, ( 7), (8) are a resistor and a transistor for consuming the regenerative power from the electric motor (6), (9) is a control device that controls the transistor of the inverter (5) and the regenerative power consuming transistor (8), ( 10) is a three-phase transformer that supplies power to the control device (9>), (11) is a 24V battery for operation during power outages, and (13> is for supplying power from battery (11) to the inverter during power outages. (17) is an inverter (26d) that converts the DC voltage from the battery (11) into a three-phase AC voltage.

(26e) is a normally open contact of an electromagnetic contactor (not shown) which is deenergized during normal power supply and energized during power outage;
f) is also a normally closed contact, (28b) is the above-mentioned contactor (
2B) is a normally open contact of an electromagnetic contactor (not shown) for power supply during a power outage, which is energized after a predetermined time (for example, 0.5 seconds) after energization; (31a) is a normally open contact of an electromagnetic contactor (not shown) for power supply during power outage; This is a normally open contact of an electromagnetic contactor (not shown) that is energized when the safety condition of 1 is satisfied and the elevator can run. In addition, it is an electromagnetic contactor (H).

Both (28) and (31) detect the presence or absence of a power outage and are operated by a power outage detection relay (not shown).

(33) is a lighting power switch, (34) is a 100V in-cage lighting lamp, (35) is a power supply for a power outage light which normally includes an automatic charging device, a battery and a power supply switching circuit, and (36) is a power outage light.

The conventional elevator power outage operation device is configured as described above, and has a three-phase AC commercial power supply (1) and a single-phase lighting power supply (I).
When A) is normal, the lighting power switch (33) is normally on, so the car interior lighting (34) is lit, and the normally open contacts (26d), (2Be) (2
8b) and (31a) are open and the normally closed contact (28f) is closed, so the inverter (5) is connected to the control device (9).
The motor (
When power is regenerated from the motor (6), the control device (9) detects this, turns on the transistor (8), and consumes the regenerated power with the resistor (7). In this way, 1. the elevator operates normally while responding to a car call or a hall call.

On the other hand, three-phase AC commercial power supply (1) and single-phase power supply for lighting (1)
When A> is out of power, the in-car lighting light (34) goes out, but the power outage light (36) is turned on by the power outage light power source (85).Also, the normally closed contacts (2) and (2Bf) are opened. Since the normally open contacts (28d) and (2[ie) are closed, the output voltage of the battery (11>) is also applied to the DC side of the inverter (17), and as a result, the inverter (17) receives three-phase AC voltage. The normally closed contact (261') is open, but the normally open contact (28b) closes after a predetermined time, so
A three-phase AC voltage, which is the output of the inverter (17), is applied to the negative side of the transformer (lO) to supply power to the control device (9).The conditions for the car to run are established, and the When the open contact (31a) is closed, the output voltage of the battery (11) is applied to the DC side of the inverter (5) via the diode (13>. Therefore, the control device (
9) is the same as when the three-phase AC commercial power supply (1) is normal, the inverter (5) and regenerative power consumption transistor (8) are controlled to control the torque and rotation speed of the motor (6), and generally the speed is lowered. It is driven in the direction of the load (the direction that makes motor drive easier), stops at the nearest floor, and opens the door.

[Problem to be solved by the invention] In the conventional elevator operation device during power outage as described above,
When the three-phase AC commercial power supply (1) and the single-phase power supply for lighting (one person) are out of power, the lighting light (34) in the car will go out, but the power outage light (35) will turn on the power outage light (3B). Furthermore, a diode (13) is connected to the DC side of the inverter (5).
), the output voltage of the battery (11) is applied to the DC side of the inverter (17), power is supplied to the control device (9), and the inverter (5> is activated). The torque and rotational speed of the motor (6) are controlled to stop the car at the nearest floor and open the door.In this way, the power outage light (35) is used to turn on the power outage light (35) at the time of a power outage. 36) is installed in elevators for general buildings, but it is the minimum necessary function for 2-3 person inverter type elevators for general residential use, which have become popular in recent years. Since thorough standardization has been carried out and there is a strong demand for something that reduces costs as much as possible, a configuration is provided in Nirebetta for general residential use that allows the power outage light (36) to be turned on by the power outage light power source (35). This is difficult physically and aesthetically in the cage, and it also increases costs, so it is often not done.

Therefore, if there is a power outage while the elevator is running, when the car is driven to the nearest floor and the door is opened to perform a rescue operation, it is pitch black because there is no power outage light (36), which eliminates the anxiety of passengers. Furthermore, there were safety problems such as the inability to confirm the level difference between the car floor and the landing floor when landing on the floor or opening the door.

This invention was made to solve the above-mentioned problems, and with a slight increase in cost, it eliminates the anxiety of passengers and eliminates the need to add a power supply for power outage lights or a power outage light in the cab. The object of the present invention is to obtain an operation device for an elevator during a power outage that can ensure safety while on the floor.

[Means for Solving 1 Problem] The elevator power outage operating device according to the present invention includes a car lighting secondary battery on the secondary side of a transformer that supplies power to a control device that controls a first inverter. A secondary winding is provided, and a power outage supply contact for car lighting is provided between the car lighting secondary winding and the car lighting light, which is closed during a power outage and is normally open. .

[Function] In the present invention, the lighting inside the car is turned off during a power outage, but power is supplied to the primary side of the transformer for the control device using a battery for operation during a power outage, and Voltage is induced in the car lighting secondary winding, and the car lighting power outage supply contact provided between the car lighting secondary winding and the car interior lighting is closed. The voltage induced in the line is applied to the in-car lighting lamp, so that the in-car lighting lamp remains lit even during a power outage.

Embodiment of the Invention FIG. 1 is a circuit diagram showing an embodiment of the invention. In the figure, the same components as those in the conventional example are given the same reference numerals as those in the conventional example, and the explanation of the redundant components will be omitted.

(IOA) is provided around the secondary side of the transformer (10), and 1. This is a car lighting secondary winding for supplying power to the OOV in-car lighting lamp (34), and its induced voltage and current are, for example, single-phase AC 1,00V, 100 VA.

(26a) is a normally open contact which is a power supply contact for the car lighting of the electromagnetic contactor (26) which is energized at the time of a power outage by a power failure detection relay (not shown). ).

(26b) is a normally closed contact of the electromagnetic contactor (26>), which is provided between the single-phase lighting power source (1A) and the car interior lighting (34).

Next, the operation of the above embodiment will be explained.

Since the operation of the elevator is the same as the conventional example,
The explanation will be omitted and the lighting of the in-car lighting lamp (34>) will be explained.

During normal power supply, the normally open contact (26a) is open and the normally closed contact (26b) is closed.
4) is lit using a single-phase lighting power source (IA) as a power source.

When a power outage occurs, the single-phase power source for lighting (one person) is lost, so the lighting light (34) in the car is turned off. In addition, normally open contacts (2
6a), (26d) are closed, normally closed contact (28b)
, (26f) are open. Serum open contact (28
When b) is closed, power is supplied to the negative side of the transformer (10) connected to the output side of the inverter (17), and a voltage is induced in the secondary winding 00A). At this time, the normally open contact (26a) provided between the secondary winding (IOA) and the in-car illumination light (34) is closed.
The voltage induced in the secondary winding (IOA) is
4), and the car interior lamp (34) is turned on. Then, similar to the conventional example, a rescue operation of the elevator is performed, and the elevator reaches the floor and opens the door, but the in-car illumination light (34) remains lit until all operations are completed.

Therefore, even during rescue operation, even if the car lands on the floor and the door is opened, the interior lighting light (34) remains on until the end of all operations, which alleviates the anxiety of passengers inside the car, and・Safety when opening the door can also be ensured.

In this way, during a power outage, the in-car lighting lamp <34> is used to illuminate the inside of the car, and the battery (11) and inverter (17) used in the rescue operation are used as its power source.
The secondary winding for car lighting (IO
A) and a normally open contact (28a) that is a power outage supply contact for car lighting that can be switched with the single-phase power supply (IA) for lighting, so that It is more economical than installing a new power outage light (36). Therefore, even if an inverter-type elevator for general residential use is equipped with this embodiment's device for illuminating the car interior during a power outage, there will not be a significant increase in cost, and moreover, it will not be necessary to physically install a power outage light (36) in the car interior. It is assumed that there are no technical or design difficulties.

In this example, the power source is a three-phase AC commercial power source (1).
Although the explanation was given for a certain system, there is also no single-phase type.

[Effects of the Invention] As explained above, the present invention provides a secondary winding for car lighting on the secondary side of a transformer that supplies power to a control device, and connects the secondary winding for car lighting to the car interior lighting. A power outage supply contact for car lighting is installed between the two, which closes during a power outage and opens during normal times, and is installed on the secondary side of the transformer to use the power from the power outage battery during a power outage. An induced voltage is generated in the secondary winding for car lighting, and the induced voltage is applied to the in-car lighting lamp by closing the car lighting power outage supply contact, thereby lighting the in-car lighting lamp. The lighting inside the car will remain on until the rescue operation in the event of a power outage is completed, which eliminates passengers' anxiety and ensures safety when landing on the floor and opening the door.Moreover, the cost of lighting the inside of the car is extremely low. This method has the advantage that it is inexpensive and can be easily applied to elevators for general residential use.

[Brief explanation of drawings]

1 2 FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional elevator operation device during a power outage. In the figure, (IOA) secondary winding for basket lighting, (2B
A) is a normally open contact (a power outage supply contact for car lighting) of an electromagnetic contactor. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] a converter that rectifies AC power and converts it into DC; a first inverter that converts the output of the converter into an AC voltage of variable voltage and variable frequency to control an induction motor for driving an elevator; and the first inverter. A control device that controls the device, a transformer that supplies power to the control device, a battery that supplies the inverter power during a power outage, and an inverter that converts the output voltage of the battery to alternating current during a power outage. a second inverter that supplies power to the primary side of the transformer to operate the control device; a normal power supply contact that connects the primary side of the transformer and the AC power supply; It is equipped with a power supply contact during a power outage that connects the second inverter, a lighting power supply, and an in-car lighting lamp that is connected to the lighting power supply via a lighting power switch, and the normal power supply contact is opened in the event of a power outage. In an elevator power outage operation device which closes the supply contact during a power outage and performs a rescue operation during a power outage, a secondary winding for car lighting is provided on the secondary side of the transformer, and a secondary winding for car lighting is provided on the secondary side of the transformer. An elevator power outage operating device characterized in that a power outage supply contact for car lighting is provided between a secondary winding and an in-car lighting light, which is closed in the event of a power outage and is open in normal times.