JPH06269102A - Electric propulsion power supply vehicle - Google Patents

Abstract

PURPOSE:To enhance operational efficiency of machine while reducing the weight of vehicle. CONSTITUTION:A generator 4 mounted on a power supply vehicle comprises a Diesel generator 5 and a three-phase balancer 6. The Diesel generator 5 comprises an electronic governor 5a, a generator engine 5b, and a generator 5c, and the three-phase balancer 6 comprises an inverter circuit 6a, a control circuit 6b and a filter 6c. The inverter circuit 6a is connected in parallel with an inverter unit 12a in a vehicle drive controller 12. The inverter unit 12a is controlled by a control circuit 12b to produce an AC output for driving a drive motor 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric propulsion type mobile power supply vehicle having a three-phase balancing device for temporarily supplying electric power to a low voltage unbalanced load.

[0002]

2. Description of the Related Art A mobile power supply vehicle is constructed as shown in FIG. In FIG. 3, reference numeral 1 is an engine for running a mobile power supply vehicle, 2 is a transmission, and 3 is a wheel. Reference numeral 4 denotes a mobile power generator, and the power generator 4 is mounted on a mobile power supply vehicle. As a mobile power supply vehicle, an ordinary four-wheel truck (3t) is usually used. The mobile power generation device 4 mounted on this vehicle includes a diesel power generation device 5 and a three-phase balancing device 6, and the diesel power generation device 5 includes an electronic cabana 5a and a power generation engine 5
b, the generator 5c, and the three-phase balancing device 6 is composed of a voltage source inverter circuit 6a, a control circuit 6b, and a filter 6c. Reference numerals 7 and 8 are current transformers.

The three-phase balancing device 6 compensates the current due to the unbalanced load and balances the generator output within the rated capacity of the device in three phases. The main circuit configuration is a voltage source inverter using an IGBT. used. Further, the power generation engine 5b of the diesel generator 5 is controlled by the electronic governor 5a so as to rotate at a constant speed, and the output voltage of the generator 5c is constant voltage controlled by an AVR device (not shown). In FIG. 3, separate engines are used for running the vehicle and for generating electricity.

[0004]

Since the mobile power supply vehicle shown in FIG. 3 has a configuration in which the diesel power generator 5 is mounted on a freight vehicle running on an engine, the device 5 can be easily manufactured by modifying the vehicle. Therefore, there is an advantage that it is economically advantageous. However, since two vehicles, one for traveling and one for generating electricity, are mounted on one vehicle, the weight is heavy, and the generator engine 5b, the generator 5c, and the three-phase balancing device 6 are deadly loaded during traveling. Therefore, there is a problem in that the efficiency of use of the device is low and it is uneconomical.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an electric propulsion type mobile power supply vehicle which is designed to reduce the weight of the vehicle and improve the efficiency of use of the equipment.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a first aspect of the present invention, which is an AC generator driven by an internal combustion engine, and a three-phase connected to a power generation output circuit of the AC generator. A power generator for a mobile power supply vehicle comprising a balancing device and a control circuit for controlling the three-phase balancing device, comprising an inverter device connected to a DC voltage detecting end of the three-phase balancing device, and a control circuit for the inverter device. A vehicle drive control device is provided, and an electric motor for driving a mobile power supply vehicle that is drive-controlled by the output of the vehicle drive control device is provided.

A second aspect of the invention has a rectifier circuit in which an AC input terminal is connected to a power generation output circuit of an AC power generator and a DC output terminal is connected to a DC voltage detection terminal of a three-phase balancer via a first circuit breaker. Then, a second circuit breaker in which the power generation output circuit is inserted in the connection circuit with the three-phase balance device is provided, and a third circuit breaker is provided in the connection circuit between the second circuit breaker and the AC output end of the three-phase balance device. And a motor for driving the mobile power source vehicle, and a vehicle drive control function is provided in the control circuit of the three-phase balancing device.

[0008]

In the first aspect of the present invention, when the mobile power supply vehicle is running, the three-phase balancing device operates as a forward converter to convert the generator output from AC to DC. This DC power serves as a DC power source for the inverter device of the vehicle drive control device to obtain AC power at the output. The driving electric motor is driven by this AC power.

On the other hand, when the mobile power supply vehicle is used for power generation, the vehicle drive control device sends a gate block signal from the control circuit in order to prevent the destruction of the elements constituting the inverter device. The three-phase balance device performs the unbalance compensation control operation.

In the second invention, when the first and third circuit breakers are "closed" and the second circuit breaker is "open" when the mobile power supply vehicle is running, the generator output is rectified by the rectifier circuit and three-phase balanced. It is supplied to the DC detection end of the device. The three-phase balancing device operates as an inverter device by a signal from the control circuit, and supplies driving power to the vehicle driving electric motor.

On the other hand, when the mobile power supply vehicle is used for power generation, the second circuit breaker is "closed" and the first and third circuit breakers are "open", so that the three-phase balance device performs unbalance compensation control. Take action.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings, in which the same portions as those in FIG. In FIG. 1, the wheels 3 of the mobile power supply vehicle are configured to be driven by the drive motor 11. The electric motor 11 is driven by the output of the vehicle drive control device 12. Vehicle drive control device 12
Is composed of an inverter device 12a and its control circuit 12b, and the inverter device 12a is connected in parallel with the voltage source inverter circuit 6a of the three-phase balancing device 6. 13 is a current transformer.

In the electric motor-driven mobile power supply vehicle constructed as described above, the electric motor 11 is used for traveling the vehicle. Therefore, when the vehicle is traveling, the inverter circuit 6a of the three-phase balance device 6 operates as a forward converter device that converts the AC output from the generator 5c into DC. The output of this forward conversion device is the inverter device 12 of the vehicle drive control device 12.
It becomes the DC power supply of a. The inverter device 12a of the vehicle drive control device 12 converts direct current into alternating current and supplies the alternating current to the vehicle drive alternating-current motor 11. As a result, the electric motor 11 is driven, and the mobile power supply vehicle is driven by the electric motor 11.

Next, at the time of power generation, the three-phase balancing device 6 performs an unbalance compensation control operation as in the case of FIG. At this time, the vehicle drive control device 12 gives a gate block signal to the inverter device 12a from the control circuit 12b in order to prevent the destruction of the elements forming the inverter device 12a.

As described above, the engine is dedicated to power generation.
It is mounted on a trolley-moving power supply vehicle, and its engine 5b is controlled by an electronic governor so as to rotate at a constant speed. Further, the generator 5c is also used to obtain a power source for running the vehicle and a power source for power generation, and the output voltage is controlled to a constant voltage by an AVR device (not shown).

FIG. 2 is a block diagram showing another embodiment of the present invention, which is different from FIG. 1 in that the three-phase balancing device 6 is used for vehicle running and power generation. In order to realize this, in FIG. 2, the diode rectifier 13 and the first to third breakers 14 are provided.
~ 16 are provided. And the 1st-3rd circuit breakers 14-1
The control circuit 6b of the three-phase balancing device 6 has a motor control function incorporated therein so that the user can switch between traveling mode and power generation mode. In FIG. 2, the AC input end of the diode rectifier 13 is connected to the output circuit of the generator 5c, and its DC output end is connected to the DC detection end of the inverter circuit 6a of the three-phase balance device 6 via the first breaker 14. Connected. The second circuit breaker 15 is inserted in the connection circuit connecting the output circuit of the generator 5c and the three-phase balancing device 6, and the third circuit breaker 1
6 is inserted in the connection electric line between the common connection point connecting the second circuit breaker 15 and the three-phase balancing device 6 and the drive motor 11.

In the embodiment configured as described above,
When traveling a mobile power vehicle, the first and third circuit breakers 1
When 4, 16 are "closed" and the second circuit breaker 15 is "open", the output of the generator 5c is converted from AC to DC by the diode rectifier 13, and this DC output is the DC of the three-phase balancing device 6. It is supplied to the detection end. The three-phase balancing device 6 operates as an inverse conversion (inverter) device that converts the supplied direct current into alternating current, and supplies it to the drive motor 11 via the third breaker 16. The drive motor 11 is driven by the supplied alternating current.

During power generation, the first and third circuit breakers 14, 16
Is "open" and the second circuit breaker 15 is "closed", the output of the generator 5c is supplied to the three-phase balancing device 6, and the three-phase balancing device 6 performs unbalance compensation control.

[0019]

As described above, according to the present invention,
Since the power generation engine mounted on the mobile power supply vehicle is used both for running the power supply vehicle and for generating power, it is possible to reduce the weight of the power supply vehicle and improve fuel efficiency. Further, by using the generator and the three-phase balancing device when the power vehicle is running, it is possible to improve the use efficiency of the device.

[Brief description of drawings]

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

FIG. 2 is a configuration diagram showing another embodiment of the present invention.

FIG. 3 is a configuration diagram showing a conventional example.

[Explanation of symbols]

 4 ... Power generation device 5 ... Diesel power generation device 5a ... Electronic governor 5b ... Power generation engine 5c ... Generator 6 ... Three-phase balance device 6a ... Inverter circuit 6b ... Control circuit 6c ... Filter 11 ... Driving electric motor 12 ... Vehicle drive control device 12a ... Inverter device 12b ... Control circuit 13 ... Diode rectifier 14, 15, 16 ... 1st-3rd circuit breaker

Claims (2)

[Claims] 1. A mobile power supply vehicle comprising an AC power generator driven by an internal combustion engine, a three-phase balance device connected to a power generation output circuit of the AC power generator, and a control circuit for controlling the three-phase balance device. In a power generator for use in a vehicle, a vehicle drive control device having an inverter device connected to a DC voltage detecting end of the three-phase balancing device and a control circuit of the inverter device is provided, and movement controlled by the output of the vehicle drive control device is provided. An electric propulsion type mobile power supply vehicle having an electric motor for driving the power supply vehicle. 2. A rectifier circuit having an AC input terminal connected to a power generation output circuit of an AC power generator and a DC output terminal connected to a DC voltage detection terminal of a three-phase balancer via a first circuit breaker,
A second circuit breaker, in which the power generation output circuit is inserted in the connection circuit with the three-phase balancing device, is provided, and a third circuit breaker is provided in the connection circuit between the second circuit breaker and the AC output end of the three-phase balancing device. The electric propulsion type mobile power supply vehicle according to claim 1, further comprising a motor for driving the mobile power supply vehicle, and a vehicle drive control function provided in a control circuit of the three-phase balancing device.