Dual-active bridge-based starting power generation system

Abstract

The invention belongs to the technical field of an aviation power supply, and relates to a dual-active bridge-based starting power generation system. A 270V high-voltage direct current is used as a power supply mechanism of the starting power generation system, a starting power generator of the starting power generation system employs a high-speed permanent-magnet synchronous motor, and the starting and power generation functions can be achieved by a bidirectional running principle of the motor. A rare-earth permanent-magnet material employed by the permanent-magnet motor has high magnetic energy product, the weight of the motor can be obviously reduced, the volume of the motor is reduced, and meanwhile, the motor is long in service lifetime and high in reliability and maintenance. A high-speed permanent-magnet synchronous motor is mature in technology, digital control is employed, and output torque control of the motor can be achieved; and the starting power generation system has theadvantages of large capacity, high power generation efficiency, small size, light weight, high reliability, low life cycle cost and the like.

Description

technical field [0001] The invention belongs to the technical field of aviation power supplies, and relates to a starting power generation system based on dual active bridges. Background technique [0002] At present, in the aviation power system at home and abroad, the application of 28V low-voltage DC power system is relatively mature, while the AC power system and high-voltage DC system are mostly in the research stage. The traditional starter generator system uses the starter controller to drive the starter generator to start the engine. After the start is completed, the starter controller is disengaged, and the generator controller controls the starter generator to generate electricity. The on-board actuation system needs to be equipped with an additional motor controller. It causes the complexity of the control network and the communication network, and makes the weight and volume of the airborne equipment of the aircraft larger, reducing the reliability of the aircraf...

AI Technical Summary

Problems solved by technology

The traditional starter generator system uses the starter controller to drive the starter generator to start the engine. After the start is completed, the starter controller is disengaged, and the generator controller controls the starter generator to generate electricity. The on-board actuation system needs to be equipped with an additional motor controller. It causes the complexity of the control network and communication network, and makes the weight and volume of the aircraft on-board equipment larger, reducing the reliability of the aircraft operation

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