Permanent magnet synchronous motor torque ripple suppression method and related system
A permanent magnet synchronous motor and torque pulsation technology, which is applied in the field of vehicles, can solve problems such as the contradiction between accuracy and stability, and achieve the effect of avoiding accuracy and stability, simple and reliable method, and good stability
Pending Publication Date: 2022-07-22
VOYAH AUTOMOBILE TECH CO LTD
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[0003] However, the traditional multi-synchronous rotating coordinate system control method requires a large number of coordinate transformations and needs to design a high-performance low-pass filter, and the system has contradictions in accuracy and stability.
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[0051] In order to better understand the technical solutions provided by the embodiments of the present specification, the technical solutions of the embodiments of the present specification will be described in detail below with reference to the accompanying drawings and specific embodiments. The detailed description of the technical solutions of the embodiments is not a limitation of the technical solutions of the present specification, and the embodiments of the present specification and the technical features in the embodiments can be combined with each other under the condition of no conflict.
[0052] In this document, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such existence between these entities or operations. The actual relationship or sequence. Moreover, the terms "comprising", "comprising" or any other variation thereof are intende...
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The invention discloses a permanent magnet synchronous motor torque ripple suppression method and a related system, relates to the technical field of vehicles, can reduce the torque ripple of a permanent magnet synchronous motor in a simple mode, can avoid the use of a high-performance low-pass filter, and can avoid the contradiction between the accuracy and the stability of the system. The permanent magnet synchronous motor torque ripple suppression method comprises the following steps: acquiring a quadrature-axis current and a direct-axis current of a current loop of a permanent magnet synchronous motor control system; performing compensation operation on the quadrature-axis current and the direct-axis current to respectively obtain a quadrature-axis current reference direct-current value and a direct-axis current reference direct-current value; and inputting the quadrature-axis current reference direct-current quantity and the direct-axis current reference direct-current quantity into the current loop so as to carry out closed-loop control on the current.
Description
technical field [0001] The present application relates to the technical field of vehicles, and in particular, to a method for suppressing torque ripple of a permanent magnet synchronous motor and a related system. Background technique [0002] At present, the technology of new energy vehicles is developing more and more rapidly. Drive permanent magnet synchronous motor as the core component of new energy vehicles. Among them, permanent magnet synchronous motor has the advantages of high efficiency, high output torque, high power density and good dynamic performance, and has gradually become the first choice for pure electric vehicle drive system. The torque ripple of the permanent magnet synchronous motor is closely related to the harmonic components of the motor phase current, so the specific harmonic components in the motor phase current can be controlled, and the torque ripple can be eliminated by suppressing the specific harmonic current or injecting the specific harmoni...
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IPC IPC(8): H02P6/10H02P21/05H02P21/20H02P25/022
CPCH02P6/10H02P21/05H02P21/20H02P25/022
Inventor 黄震
Owner VOYAH AUTOMOBILE TECH CO LTD