Hybrid permanent magnet memory starter/generator and operation method thereof

Abstract

The invention discloses a hybrid permanent magnet memory starter / generator and an operation method thereof, and belongs to the field of permanent magnet synchronous motors. Hybrid permanent magnet memory starter / generator comprises a hybrid permanent magnet rotor, a stator iron core, armature windings, air gaps and a rotating shaft. Two sets of windings are wound on the stator iron core in the same groove and in the same direction to jointly form an armature winding which is also used for adjusting magnetism; the two sets of windings work in a series or parallel state as required; a high-coercivity permanent magnet, a low-coercivity permanent magnet and a triangular magnetic barrier are arranged on the hybrid permanent magnet rotor; two tangentially magnetized low-coercive-force permanent magnets and two radially magnetized high-coercive-force permanent magnets are arranged below each magnetic pole of the hybrid permanent magnet rotor to form a W-shaped structure; and a triangular magnetic barrier is arranged at the junction of each low-coercivity permanent magnet and each high-coercivity permanent magnet. The motor adopts alternating-current pulse magnetic adjustment; when magnetic adjustment is needed, the armature winding is used for applying magnetic adjustment pulses; the permanent magnets are placed on the motor rotor; and the motor is simple in structure, easy and convenient to machine and manufacture, and the technology is mature.

Description

technical field [0001] The invention belongs to the field of permanent magnet synchronous motors, in particular to a hybrid permanent magnet memory starter / generator and an operating method thereof. Background technique [0002] Since the starter / generator system needs to be started with the engine, it works in the electric state at low speed, and needs a large torque output; after the engine starts and runs to a certain speed, the engine drives the starter / generator system to work in the generator state, and the voltage of the generator Varies with engine speed and varies with load. [0003] The electromagnetic torque of the starter / generator system at startup is generally several times or even more than ten times that of the generator state. Taking the starting / generating system of a UAV as an example, the torque required for starting is 48N m and the speed is 1200rpm, and the power of the generator is 2000W when the speed is 4800rpm. According to this requirement, the el...

AI Technical Summary

Problems solved by technology

The position and angle of the permanent magnets are not clearly given in the W-shaped rotor of the motor, and the motor torque cannot be guaranteed to meet the high torque required for starting.

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