System and method for high-voltage direct-current starting and power generation of stator duplex winding asynchronous motor

Abstract

The invention discloses a system and method for high-voltage direct-current starting and power generation of a stator duplex winding asynchronous motor. A main loop comprises the stator duplex winding asynchronous motor, a rectifier bridge, a power converter, a direct-current power source, a diode, a control side direct-current capacitor and a power side direct-current capacitor. A detecting loop comprises a first voltage transducer, a second voltage transducer, a first current transducer and a second current transducer. A control loop comprises a digital signal processor and a driving circuit. Five-phase centralized full-pitch star-shaped structures are adopted by both sets of stator windings which are a power winding and a control winding of the stator duplex winding asynchronous motor. In the starting and power generating process, the power converter implants three times of proper harmonic currents to the motor through the control winding under the control of the digital signal controller, an air-gap magnetic field is controlled to be a standard square wave, and therefore the torque density and the power density of the motor are improved. The system and method for the high-voltage direct-current starting and power generation of the stator duplex winding asynchronous motor is simple in structure and free of electric brush sliding rings, can achieve the integration of start and power generation, and has the advantages of being high in power density and torque density, easy to operate with fault-tolerance and the like.

Description

technical field [0001] The invention relates to a high-voltage direct-current starting and generating system of a stator double-winding asynchronous motor with harmonic injection and a method thereof. Background technique [0002] In independent systems such as aircraft, ships, and tanks, engines are mostly used as prime movers to provide power sources for hydraulic, pneumatic, and other transmission systems and power generation systems. Before the engine runs on its own, it needs to be started with a special starting device (such as hydraulic pressure, air pressure or electric motor). After it runs on its own, it can output power. On the one hand, it drives hydraulic and air pressure equipment, and on the other hand, it also drives the generator to generate electricity. And when the engine is started, the starting device no longer works, not only the utilization rate is very low, but also the structure is relatively complicated, which greatly increases the volume and weight...

AI Technical Summary

Problems solved by technology

[0005] Although DWIG was proposed for power generation applications, it is still a cage-type asynchronous motor in essence, and of course it can run electrically, so DWIG can also be used in starter power generation systems, but from the existing literature, there is no Related reports

Images