A Torque Ripple Suppression Method for Open-winding Permanent Magnet Synchronous Motor
A technology of permanent magnet synchronous motor and torque ripple, which is applied in the direction of torque ripple control, motor control, motor generator control, etc. It can solve the problems of poor motor operation performance, deterioration of deadbeat control effect, inaccurate estimated voltage, etc. problem, to achieve the effect of small torque fluctuation, overcome high parameter accuracy requirements, and good robustness
Active Publication Date: 2021-01-29
包头天工电机有限公司
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Problems solved by technology
However, deadbeat control also requires accurate motor parameters, otherwise it will lead to inaccurate estimated voltage and poor motor performance
The motor parameters will inevitably change during the operation of the motor, which will deteriorate the effect of deadbeat control, so it is necessary to correct the estimated voltage on the basis of deadbeat control
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[0047] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0048]like Figure 1-2 As shown, the torque ripple suppression method of the open-winding permanent magnet synchronous motor provided by the present invention specifically includes the following steps:
[0049] Step 1, collecting in real time the data information of the three-phase current, rotational speed, and rotor position angle of the open-winding permanent magnet synchronous motor at the current k moment;
[0050] Step 2. Establish the deadbeat control model of the open-winding permanent magnet synchron...
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The invention provides a torque ripple suppression method of an open-winding permanent magnet synchronous motor, which realizes effective suppression of the torque ripple of the motor under the condition of parameter mismatch by estimating and compensating the disturbance item of the motor and combining deadbeat control , without the need for real-time parameter identification, which overcomes the drawbacks of deadbeat control that requires high parameter accuracy. This method can not only suppress the torque ripple generated in the case of zero-sequence motor parameter mismatch, but also suppress the harmonic torque ripple generated in the case of d and q-axis motor parameter mismatch, thereby ensuring The motor can have a relatively good steady-state motion state under the condition of motor parameter mismatch, has good robustness, and can effectively improve the working efficiency of the open-winding permanent magnet synchronous motor.
Description
technical field [0001] The invention relates to the technical field of torque control of permanent magnet synchronous motors, in particular to a torque ripple suppression technology of open-winding permanent magnet synchronous motors. Background technique [0002] The parameter mismatch, especially the inductance mismatch, during the operation of the open-winding permanent magnet synchronous motor will generate harmonic torque ripple, and the size of the torque ripple reflects the quality of the steady-state performance of the motor, so the suppression of the motor torque ripple It is a very important aspect in the field of motor control. Establishing a suitable state observer is a common method for motor torque ripple suppression at this stage, but the establishment of most state observers requires accurate motor parameters, such as Lomberg observers and Kalman filter state observers, which are of great importance to The specific implementation of the program has caused di...
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IPC IPC(8): H02P21/05H02P6/10
CPCH02P6/10H02P21/05H02P2207/05
Inventor 张硕李雪萍宫振杰张承宁周莹
Owner 包头天工电机有限公司