JPH0332389A - Thyristor leonard device - Google Patents

Abstract

PURPOSE:To control a speed of fast response and to control a torque by providing a load resistor, a dummy load formed of a thyristor converter for regulating load power of the resistor, and a detector for detecting a generator output, and regulating the load power of the dummy load. CONSTITUTION:A generator apparatus having a mechanical power unit 1 for supplying power and a generator 2, a DC motor 3, a thyristor converter 5 for controlling the motor 3, a dummy load formed of the converter 5 and a load resistor 6, a detector for detecting a generator motor output power, a power controller 8 for controlling a generator output power constantly by regulating the output voltage of the converter 5 of the dummy load, etc., are provided. Accordingly, even if the load power of a thyristor Leonard unit drive side is abruptly varied by a control of a fast response, the dummy load is regulated by the controller 8 to maintain the generator output constant. Thus, the mechanical output of the unit 1 of a generator apparatus is constant to continue a stable operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a thyristor Leonard device that controls the armature voltage of a DC motor using a thyristor converter.

(Prior art) Thyristor Leonard devices are widely used as variable speed drive devices that can easily control speed and torque and provide fast control responses, but they are used in places where it is impossible to obtain commercial power. However, private power generators are often used as a power supply, and examples of such uses include propeller drives on ships, winches, cranes, cranes used in remote areas, and various transportation machines. and,
A conventional thyristor Leonard device that receives power from a private power generation facility consists of an engine as a power source on the power supply side and a generator that converts this power into electrical energy, and a DC motor on the drive side and controls the armature voltage of the DC motor. Consists of a thyristor converter. Originally, the thyristor Leonard device is capable of controlling quick responses such as sudden acceleration and sudden torque fluctuations, but at this time, the driving power changes suddenly, so it is necessary to suddenly change the power supplied on the power supply side.

However, in conventional private power generators, the power of the engine is usually adjusted by fuel adjustment using a governor, and the step response is extremely slow, ranging from several seconds to several tens of seconds, making it impossible to suddenly change the power supply. Therefore, there is a drawback that quick response control is not possible due to engine limitations.

(Problems to be Solved by the Invention) In the conventional thyristor Leonard device that is powered by a private power generator, the response of the power supply to the mechanical power device such as the engine is slow, so it is difficult to control the speed and torque of the drive side AL and fast response. The disadvantage is that it is impossible to control.

An object of the present invention is to enable quick response speed control and 1-lux control using a thyristor Leonardo device that is powered by a private power generator.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a power generation device consisting of a mechanical power station for power supply and a generator, a DC motor, a thyristor converter for controlling the DC motor, and a dummy machine consisting of the thyristor converter and a load resistor. This is a thyristor Leonard device that consists of a load, a detector that detects the generator output power, and a power control circuit that controls the generator output power to a constant level by adjusting the output voltage of the dummy load thyristor converter. A dummy load consisting of a load resistor and a thyristor converter that adjusts the load power of the load resistor and a generator output are detected as loads other than the thyristor Leonard device to the thyristor Leonard device, which is supplied with power from the device and consists of a thyristor converter and a DC motor. Thyristor Leonard device equipped with a power control circuit that controls the generator output power to be constant even if the load power on the drive side of the thyristor Leonard device changes suddenly by installing a detector and adjusting the load power of the dummy load. It is.

(Function) Even if the load power on the drive side of the thyristor Leonard device changes suddenly due to response control, the power control circuit adjusts the dummy load to keep the generator output constant, so the mechanical power unit of the generator The output is constant and stable operation can continue.

(Example) Next, an example of the present invention will be described. FIG. 1 shows a generator 2 that supplies power to a thyristor converter 4, a DC motor 3 driven by the thyristor converter 4, a power converter 7 that converts a power value signal supplied to the thyristor converter 4, and a power converter 7 that converts a power value signal supplied to the thyristor converter 4. A power control amplifier 9 that amplifies the output signal of the converter 7, a thyristor converter 5 that is connected in parallel with the thyristor converter 4 and supplies power to the load resistor 6, and a power control amplifier and a power value signal that is supplied to the thyristor converter 5. 9 shows a thyristor Leonard device comprising a voltage control amplifier 11 which inputs the output signal of 9 and controls the voltage, and a phase control circuit 12 which controls the phase of the thyristor converter 5 by the output of the power control circuit 11. ing.

That is, the power supply side is composed of an engine 1- and a generator 2, and the drive side is composed of a DC motor 3 and a thyristor congater 4. A thyristor converter 5 and a load resistor 6 are provided as dummy loads, and a power converter 7 that detects the generated power of the generator 2 and a power feedback of the output of the power converter 7 adjust the thyristor converter 7 to generate the load power of the generator 2. The electric power 11i that controls constant ! l ＃＠路8
It consists of

The power control circuit 8 has power M! , 1'@go and power converter 7
is a power control amplifier 9 that combines and amplifies the output feedback which is the output, and a voltage control amplifier 11 that adjusts the output voltage of the thyristor converter 5 by the output of the power control amplifier 9. It is composed of a phase control circuit 12 that provides an arc phase.

The engine 1 supplies mechanical power to a generator 2, and the generator 2 converts the mechanical power supplied from the engine unit into electric power and supplies it to a drive device consisting of a DC motor 3 and a thyristor converter 4, which is a dummy load thyristor converter. 5 can adjust the voltage supplied to the load resistor 6 by its firing phase,
By adjusting this voltage, the power consumption of the load resistor is controlled.

The power converter 7 inputs the output voltage and output current of the generator 2 and detects the electric power, and the power control circuit 8 uses the power control amplifier 9, the voltage control amplifier 11, and the phase control circuit 12 to control the output of the generator 2. The firing phase of the dummy load thyristor converter 5 is given so that the value given by the power reference 10 is obtained.

FIG. 2 is an explanation of the effect of power supply control of the thyristor Leonard device according to this embodiment, with power plotted on the vertical axis and time plotted on the horizontal axis, and shows that the generator output power 13 is controlled to be constant. It shows.

Even if the thyristor Leonard load power 14 fluctuates rapidly due to fast-response control, the dummy load power 15 fluctuates so that the generator output 13 does not fluctuate, and the generator output power 13 does not fluctuate. Even if the thyristor Leonard device performs quick-response control in this way, the generator output type crab 3 does not fluctuate, so the mechanical power of the engine remains constant and stable operation is maintained.

〔Effect of the invention〕

According to the present invention, speed control and torque control with quick response are possible with a thyristor Leonard device powered by a private power generator.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a thyristor Leonard device showing an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing the effect of power supply control. 4... Thyristor converter, 5... Thyristor converter, 6... Load resistance, 7...
Power converter, 8... Power control circuit, 9... Power control amplifier, 10... Power reference, 11... Voltage control amplifier,
12. Phase control circuit, 13... Generator output power, 14... Thyristor Leonard load power, 15...
Dummy load power.

Claims (1)

[Claims] A generator that supplies power to the thyristor converter, a DC motor driven by the thyristor converter, a power converter that converts the power value signal supplied to the thyristor converter, and amplifies the output signal of the power converter. a power control amplifier connected in parallel with the thyristor converter to supply power to a load resistor, a signal of a power value to be supplied to the other thyristor converter, and an output signal of the power control amplifier. 1. A thyristor Leonard device comprising: a voltage control amplifier that controls the voltage; and a phase control circuit that controls the phase of the other thyristor converter based on the output of the power control circuit.