JPH0686518A - Generator device - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to know the voltage of the other winding system by using the detection voltage of one winding system of the multi-winding generator. It is an object of the present invention to provide a seed power generation device that is simple and can be made inexpensive accordingly. In a power generator including a generator 1 having an auxiliary machine winding 1B for generating electric power for an auxiliary machine separately from a main winding 1A, the main unit is used as a voltage detecting means for the auxiliary machine winding. A coefficient unit 52 is used, which receives a voltage detection value of a winding, multiplies the input value by a winding ratio of the main winding and the auxiliary equipment winding, and outputs the product. [Effect] Although the generator includes a plurality of types of windings, the voltage of each winding system can be known by one voltage detection unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power generator having a generator having an auxiliary machine winding for generating electric power for an auxiliary machine, in addition to a main winding.

[0002]

2. Description of the Related Art FIG. 2 shows a conventional power generator of this type. In the figure, is a three-phase AC generator, and as shown in FIG. 3, includes a main winding 1A and an auxiliary machine winding 1B. Reference numeral 10 is a three-phase full-wave rectifier, 11 is a smoothing capacitor, 12 is a switch, 13 is a battery, and 20 is a load (auxiliary equipment). Reference numeral 30 is a three-phase full-wave rectifier, 31 is a smoothing capacitor, and 40 is a load.

In FIG. 3, r, s, and t are auxiliary machine windings 1.
R-phase, s-phase, t-phase coils with B turn number N1
r ', s', and t'are r'phase, s'phase, and t'phase coils having the number of turns N2 of the main winding 1A. However, α = N1
/ N2. Vr, Vs, and Vt are output voltages of each phase of the auxiliary winding 1B, and Vr ', Vs', and Vt' are output voltages of each phase of the main winding 1A.

The DC voltage supplied to the auxiliary machine 20 is
1, the DC voltage supplied to the load 40 is E2, the battery 1
The voltage of 3 is Vc.

In this configuration, when the generator G is in steady operation, the three-phase full-wave rectifier 10 is the auxiliary winding 1 of the AC generator G.
The three-phase output of B is full-wave rectified and converted into direct current, and this direct current is smoothed by the smoothing capacitor 11 and supplied to the auxiliary device 20. The three-phase full-wave rectifier 30 full-wave rectifies the three-phase output of the main winding 1A of the AC generator G to convert it into direct current, which is smoothed by the smoothing capacitor 31 and supplied to the load 40. .

When the alternating current generator G with Vc> E1 is started or stopped, the switch 12 is closed, and the auxiliary machine 20 is supplied with electric power from the battery 12.

[0007]

In such a power generator, it is necessary to detect the voltage generated by the generator G for control. Conventionally, however, voltage detection is performed in the main circuit of each winding system. Since the number of voltage detectors is increased, the number of voltage detectors increases, and the circuit becomes complicated and the cost increases.

The present invention has been made to solve this problem, and the voltage of the other winding system can be known by using the detection voltage of one winding system. It is an object of the present invention to provide a seed power generation device that has a simple circuit and can be made inexpensive accordingly.

[0009]

In order to achieve the above object, the present invention provides a power generator having a generator having an auxiliary machine winding for generating auxiliary machine electric power, in addition to a main winding. As a voltage detection means for the auxiliary machine winding, a coefficient unit for inputting the detected voltage value of the main winding, multiplying the input value by the turn ratio of the main winding and the auxiliary machine winding, and outputting the product. It is configured to be used.

According to a second aspect of the present invention, a generator having an auxiliary machine winding for generating electric power for the auxiliary machine, separately from the main winding, and converting the output of the auxiliary machine winding into a direct current to supply the direct current to the auxiliary machine. A converter that supplies electric power, a battery that is inserted via a switch between the DC output terminals of the converter, and a switch opening / closing control circuit that opens the switch when the voltage of the battery exceeds a threshold voltage. The switch opening / closing control circuit includes a coefficient unit having a winding ratio of the main winding and the auxiliary machine winding as a coefficient, and the coefficient unit outputs the voltage of the main winding by multiplying the voltage by the coefficient.
This output is used as a threshold voltage.

[0011]

In the present invention, the voltage detection of the auxiliary winding system is performed based on the voltage detection value of the main winding system. Although the generator has a plurality of types of windings, the voltage of each winding system can be known by one voltage detection unit for the generator.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 32 is a DC voltage detector for detecting the voltage supplied to the load 40, reference numeral 50 is a switch opening / closing control circuit, which comprises a comparator 51 and a coefficient unit 52. The comparator 51 calculates the voltage Vc of the battery 13 from the coefficient unit 52.
Of the output Vs, and when Vs > Vc, the switch 1
A switch open command signal is sent to the switch 2. Coefficient unit 52
Outputs a voltage value E2 × α obtained by multiplying the detection voltage E2 of the DC voltage detector 32 by α. Other configurations are the same as those in FIG.

In this configuration, when Vs <Vc, for example, when the generator G is started, the comparator 51 sends a switch open command signal, so that the switch 12 is closed and the auxiliary device 20 has the battery 13. Power is supplied from.

When Vs > Vc, that is, when the rectified voltage value of the voltage generated in the auxiliary machine winding 1B becomes higher than the charging voltage of the battery 12, the comparator 51 sends a switch open command signal, so that the switch 12 is turned on. The circuit is opened, the battery 13 is disconnected from the circuit, and the auxiliary machine 20 is supplied with electric power from the three-phase full-wave rectifier 10.

As described above, in this embodiment, the voltage value obtained by multiplying the rectified voltage of the main winding 1A by α is regarded as the rectified voltage of the auxiliary equipment winding 1B, and the obtained voltage value is multiplied by α. Since the switch 12 is controlled to open and close, a voltage detector for detecting the rectified voltage of the auxiliary winding 1B is unnecessary, and the voltage detector detects the generated voltage of the main winding 1A or the rectified voltage of this generated voltage. There is an advantage that only one device 32 is required.

In the above embodiment, the rectified voltage is detected. However, when it is desired to obtain the peak value, effective value and average value of the generated voltage (AC voltage), the voltage detector uses the AC output of the main winding 1A. All you need is a voltage detector to insert in the circuit.

Further, when there is no phase difference between the voltages generated in the respective windings, the instantaneous voltage value of both windings can also be detected from the output of the voltage detector inserted in the AC output circuit of the main winding 1A. Further, in the above embodiment, the number of auxiliary machine windings is one,
Even if there are two or more windings other than the main winding, the voltage value obtained by multiplying the generated voltage of the main winding 1A system by the respective turns ratio can be used as the threshold voltage. It's done.

[0019]

As described above, according to the present invention, the voltage of the auxiliary winding system is detected on the basis of the detected voltage value of the main winding system. You can know the voltage of each winding system with one voltage detection means.
The voltage detection and the control circuit using the detected value are simplified, and the cost can be reduced accordingly.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of the present invention.

FIG. 2 is a circuit diagram of a conventional power generator.

FIG. 3 is a diagram showing windings of a generator having a plurality of types of windings.

[Explanation of symbols]

 1A Main winding 1B Auxiliary winding 10,30 Full-wave rectifier 12 Switch 13 Battery 20 Auxiliary equipment 32 DC voltage detector 40 Load 50 Switch opening / closing control circuit 51 Comparator 52 Coefficient unit

Claims (2)

[Claims] 1. A power generator having a generator having an auxiliary machine winding that generates electric power for the auxiliary machine, separately from the main winding,
A coefficient unit for inputting the voltage detection value of the main winding, and multiplying the input value by the turn ratio of the main winding and the auxiliary winding, and outputting the voltage as the voltage detecting means for the auxiliary winding. A power generation device characterized by using. 2. A generator having an auxiliary machine winding for generating electric power for the auxiliary machine, separately from the main winding, and converting the output of the auxiliary machine winding into DC to supply DC power to the auxiliary machine. A converter, a battery inserted via a switch between the DC output terminals of the converter, and a switch opening / closing control circuit that opens the switch when the voltage of the battery exceeds a threshold voltage, The switch opening / closing control circuit is provided with a coefficient unit having a coefficient of the number of turns of the main winding and the auxiliary machine winding, and this coefficient unit multiplies the voltage of the main winding by the coefficient and outputs it. A power generation device having a threshold voltage.