Modular hybrid pitch winding motor

Abstract

The invention discloses a modular hybrid pitch winding motor, and relates to the field of motor manufacturing. The motor comprises a stator and a rotor, the stator comprises a stator iron core and a plurality of armature winding modules, Q tooth grooves are formed in the stator iron core, and a groove conductor is arranged in each tooth groove. The number of pole pairs of the motor is Pr, Pr>=2, and Q / Pr=12. The number of the armature winding modules is Pr, each armature winding module comprises a three-phase winding, and each armature winding module comprises six adjacent armature coils; in each armature winding module, two coil pitches are five stator tooth grooves, and the rest four coil pitches are six stator tooth grooves, so that the armature winding module is called a hybrid pitch winding. When one set of armature winding module breaks down, the system can rapidly cut off the fault part, and the healthy part can continue to operate; winding space harmonic waves are small, iron core loss is low, and system efficiency is high; and the short-circuit current is small when a short-circuit fault occurs, so that the reliability of the motor driving 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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