Double stator double salient pole compound excitation motor drive system and its control method

Abstract

The invention discloses a double-stator doubly salient hybrid excitation motor drive system, and the system comprises fault reconstruction five-phase T-type three-level inverters and a double-stator doubly salient hybrid excitation motor; two sets of windings of the double-stator doubly salient hybrid excitation motor are separately powered by two sets of fault reconstruction five-phase T-type three-level inverters, and the two sets of fault reconstruction five-phase T-type three-level inverters are independent with each other. The double-stator doubly salient hybrid excitation motor adopts a double-stator structure which comprises an outer stator, an inner stator, doubly salient rotor, a permanent Nd-Fe-B magnet, a permanent Al-Ni-Co magnet, a magnet regulating coil and an armature winding; and the two stators share one doubly salient rotor. According to the invention, the double-stator doubly salient hybrid excitation motor drive system is provided, a control method of the system is also provided, and the system has advantages of high power density, high efficiency, high reliability, high magnet regulating ability and the like.

Description

technical field [0001] The invention belongs to the fields of electric engineering, motors and power electronics, in particular to a novel double-stator double-salient-pole compound excitation motor drive system and a control method thereof. Background technique [0002] With the continuous improvement of power density, efficiency, reliability and other requirements of modern motor drive systems, traditional motor systems have encountered bottlenecks. Among several traditional motors, the asynchronous motor has low efficiency and power factor because it needs the stator armature winding to generate excitation current. Since the permanent magnet synchronous motor uses permanent magnets to generate an air gap magnetic field, the armature winding only needs to provide torque current, so the efficiency is high. However, the magnetic field generated by permanent magnets is difficult to adjust, so it is not conducive to the weak field speed regulation operation driven by new ener...

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Problems solved by technology

[0003] Purpose of the invention: Aiming at the above-mentioned problems in the existing motor system in terms of power density, efficiency, reliability, and magnetic adjustment ability, etc., the present invention proposes a new double-stator double-salient pole compound excitation motor system, which can have a power density High efficiency, high reliability, strong magnetic adjustment ability, etc.

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