A Modular Hybrid Pitch Winding Motor

Abstract

The invention discloses a modular hybrid pitch winding motor and relates to the field of motor manufacturing. The invention includes a stator and a rotor. The stator includes a stator core and a plurality of armature winding modules. The stator core is provided with Q slots, and slot conductors are arranged in each slot. The number of motor pole pairs is P r , where P r ≥2, and Q / P r =12. The number of armature winding modules is P r Each armature winding module contains three-phase windings, and each armature winding module includes six adjacent armature coils; in each armature winding module, two of the coil pitches are five stator slots, The pitch of the remaining four coils is six stator slots, so it is called hybrid pitch winding. In the present invention, when a set of armature winding modules fails, the system can quickly remove the faulty part, and the healthy part can continue to operate; the winding space harmonics are small, the core loss is low, and the system efficiency is high; when a short-circuit fault occurs, the short-circuit current is small, improving The reliability of the motor drive system is improved.

Description

technical field [0001] The invention relates to the field of motor manufacturing, in particular to a modular hybrid pitch winding motor. Background technique [0002] Multi-phase motor Modular motor is a common way for motor drive systems to achieve fault-tolerant functions. Using a multi-phase motor structure can achieve higher performance indicators, such as high torque density / power density, and has small torque ripple, small voltage stress, Advantages such as low harmonics of bus voltage. However, the normal operation performance and fault tolerance index of existing motors are contradictory, and it is difficult to realize them at the same time. This is a key technical problem to be solved by current researchers. [0003] In addition, a variety of faults may be found in the motor drive system, such as open circuit faults, short circuit faults, inter-turn short circuits, permanent magnet demagnetization faults, etc. How to realize the fault tolerance of multiple fault t...

AI Technical Summary

Problems solved by technology

However, the normal operation performance and fault tolerance index of existing motors are contradictory, and it is difficult to realize them at the same time. This is a key technical problem to be solved by current researchers.

[0003] In addition, a variety of faults may be found in the motor drive system, such as open circuit faults, short circuit faults, inter-turn short circuits, permanent magnet demagnetization faults, etc.

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