PERMANENT MAGNET SYNCHRONOUS MOTOR MTPA CONTROL METHOD AND APPARATUS, SYSTEM AND DEVICE

WIPO Patent Application WO/2022/133892

A1

A permanent magnet synchronous motor MTPA control method and apparatus, a system and an electronic device. The method comprises: acquiring in real time a torque current setpoint output by a rotational speed regulator (S101); calculating in real time d-axis and q-axis current setpoints according to a preset trajectory planning formula, wherein the preset trajectory planning formula is based on a quadratic function between the d-axis and q-axis current setpoints under an MTPA condition, and is generated by performing rotation parameter identification on the permanent magnet synchronous motor in advance (S102); and outputting the d-axis and q-axis current setpoints to a current loop in real time to control the permanent magnet synchronous motor to operate at MTPA based on d-axis and q-axis voltage setpoints output by the current loop (S103). Since MTPA trajectory planning is performed based on a trajectory planning formula which better reflects the actual operation condition of the motor, an energy-saving operation insensitive to inductance self-saturation and cross-saturation of the motor can be achieved. The algorithm complexity is low, the calculation time consumption is low, and the dynamic response rate of the motor is not reduced.

WANG YU (CN)
SHEN WEN (CN)
WANG ERFENG (CN)
WU XUANQIN (CN)

PCT/CN2020/138982

June 30, 2022

December 24, 2020

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SHENZHEN INVT ELECTRIC CO LTD (CN)

H02P21/00; H02P25/022

CN111884552A	2020-11-03
CN107332485A	2017-11-07
CN107896080A	2018-04-10
CN106452243A	2017-02-22
CN104037794A	2014-09-10
US20120217916A1	2012-08-30

SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)

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