Parallel rotor structure hybrid excitation motor brushless electric excitation rotor magnetic poles

Abstract

The invention discloses a parallel rotor structured hybrid-excited motor brushless electro-excitation rotor pole with an electro-excitation winding positioned on a rotor; the electro-excitation rotor pole is of nonsalient pole structure and is composed of a linear core pole and an end core pole positioned between a permanent magnet rotor and the linear core pole; the electro-excitation rotor pole is arranged coaxial to an exciter rotating armature and a permanent magnet rotor pole; a rotating rectifying power supply system of the electro-excitation winding combines a six-phase dual-Y-shift 30-DEG rotating armature winding and two three-phase rotating rectifying bridges, and direct current outputs of the two three-phase rotating rectifying bridges are connected in parallel; the brushless electro-excitation rotor pole makes full use of space between permanent magnets and an electro-excitation rotor in an existing parallel rotor structure, gap magnetic field adjusting capacity can be effectively enhanced, high-quality brushless power supply can be provided for the electro-excitation rotor, and the brushless electro-excitation rotor pole also has the function of fault redundant operation.

Description

technical field [0001] The invention relates to a brushless electric excitation rotor magnetic pole of a parallel rotor structure hybrid excitation motor. Background technique [0002] Hybrid excitation motor combines the advantages of permanent magnet motor and electric excitation motor. It not only has the advantages of high efficiency and high power density of permanent magnet synchronous motor, but also has the ability of electric excitation motor to adjust the air gap magnetic field. The fields of automobiles, ships and aviation power supply systems have received extensive attention. In the existing hybrid excitation motor topology, the permanent magnet rotor and the electric excitation rotor are coaxially arranged in parallel, and the electric excitation winding is located on the rotor structure. Because of its relatively simple structure, the adjusting magnetic flux generated by the electric excitation rotor does not need to pass through the permanent magnets. There ...

AI Technical Summary

Problems solved by technology

Prototype trial production experience shows that the space between the permanent magnet rotor and the electric excitation rotor should consider both the extension of the end of the electric excitation winding and the distance required for manual operation. The axial length of the space can reach the maximum extension of the end of the electric excitation winding. 1.3 times the length, which increases the total length of the motor and cannot be effectively utilized

Moreover, for the field coil formed by hand, the shape of the end winding in this space is irregular, resulting in uneven binding thickness of the end sheath, which reduces the binding quality

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