A control strategy of a permanent magnet synchronous motor for an electric vehicle
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College of Intelligent Manufacturing, Qingdao Huanghai University, Qingdao, China
Submission date: 2022-04-27
Final revision date: 2022-09-16
Acceptance date: 2022-09-19
Online publication date: 2022-11-19
Publication date: 2022-11-25
Journal of Theoretical and Applied Mechanics 2022;60(4):673–685
The traditional modulation method of the inverter in a permanent magnet synchronous mo- tor (PMSM) is lengthy and computationally intensive. Based on this, a simplified sinusoidal pulse width modulation method is proposed. In this method, voltage space vectors in each sector are synthesized, and the sector in which the synthesized vector is located is determined by the rotation angle of the resultant vector, and then the acting time of the basic vector is calculated by the voltage difference of the phase voltage. The problem of trigonometric functions and coordinate conversion is not involved in the whole calculation process, the calculation model is simple, and it is easy to realize digitization. Mathematical modeling is carried out by using the simulation software Matlab, and the correctness of the calculation method after optimization is verified, which provides an idea for the later research of the inverter modulation method.
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