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Double-ring dead-beat prediction control method for permanent magnet synchronous motor based on disturbance estimation compensation

A permanent magnet synchronous motor, predictive control technology, applied in the direction of motor generator control, motor control, electronic commutation motor control, etc., can solve the problems that the speed loop control performance cannot be weakened due to load changes, and the motor parameter error cannot be eliminated.

Active Publication Date: 2019-08-23
杭州领芯微电子有限公司
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Problems solved by technology

[0005] In order to overcome the shortcomings of existing permanent magnet synchronous motor prediction methods that cannot eliminate motor parameter errors and the impact of unmodeled dynamics on the performance of deadbeat current prediction control, and cannot weaken the speed loop control performance affected by load changes, the method of the present invention The purpose is to provide a double-loop deadbeat predictive control method for permanent magnet synchronous motors based on disturbance estimation compensation

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  • Double-ring dead-beat prediction control method for permanent magnet synchronous motor based on disturbance estimation compensation
  • Double-ring dead-beat prediction control method for permanent magnet synchronous motor based on disturbance estimation compensation
  • Double-ring dead-beat prediction control method for permanent magnet synchronous motor based on disturbance estimation compensation

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Embodiment Construction

[0078] The present invention will be further described below with reference to the accompanying drawings.

[0079] refer to Figure 1-Figure 7 , a double-loop deadbeat predictive control method for permanent magnet synchronous motor based on disturbance estimation compensation, comprising the following steps:

[0080] Step 1, establish a discrete permanent magnet synchronous motor current prediction model, and design a current loop controller, the process is as follows:

[0081] 1.1, the voltage equation of PMSM in the synchronous rotating coordinate system is expressed as the following form

[0082]

[0083] In the formula, u d and u q is the d, q axis stator voltage, i d and i q is the d, q axis stator current, L d =L q =L is the stator inductance, R is the stator resistance, ψ f is the permanent magnet flux linkage, ω e is the electrical angular velocity;

[0084] 1.2, the first-order Taylor formula is used to discretize the current state equation to obtain the...

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Abstract

A double-ring dead-beat prediction control method for a permanent magnet synchronous motor based on disturbance estimation compensation comprises the following steps: establishing a discrete current prediction model of the permanent magnet synchronous motor, and designing a dead-beat current prediction controller; designing a sliding mode disturbance observer to estimate stator current and parameter disturbance; designing a dead-beat speed prediction controller; and designing a sliding mode disturbance observer to observe and compensate the load torque. According to the invention, under the condition that motor model parameters are not matched, the method achieve the accurate current control; under the condition that the dead-beat speed prediction controller is sensitive to load change, the method achieves the improvement of the dynamic and static performance and the anti-disturbance performance of the speed outer ring through load torque observation and compensation.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet synchronous motor control, and particularly relates to a double-loop deadbeat prediction control method of a permanent magnet synchronous motor based on disturbance estimation compensation. Background technique [0002] Permanent magnet synchronous motors are widely used in servo systems, electric vehicles, and industrial automation due to their high power density. In the actual permanent magnet synchronous motor drive system, the control performance of the inner current loop and the outer speed loop is the key to determine the performance of the system. Therefore, in order to achieve high dynamic performance and high steady-state precision control of current and speed, experts and scholars have proposed many control strategies for the design of current loop and speed loop, including PID control, lead-lag control, sliding mode control and predictive control. Wait. [0003] Among the abo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P21/13H02P21/14H02P21/22
CPCH02P21/0007H02P21/13H02P21/14H02P2207/05H02P21/22
Inventor 吴春吕炜杰南余荣
Owner 杭州领芯微电子有限公司
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