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Permanent magnet synchronous motor predictive control method based on novel extended state observer

A technology of permanent magnet synchronous motor and extended state observation, which is applied in motor control, motor generator control, AC motor control and other directions, and can solve problems such as parameter mismatch.

Pending Publication Date: 2022-03-11
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of parameter mismatch, the present invention proposes a method for predictive control of permanent magnet synchronous motors based on a novel extended state observer, including the following steps:

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  • Permanent magnet synchronous motor predictive control method based on novel extended state observer
  • Permanent magnet synchronous motor predictive control method based on novel extended state observer
  • Permanent magnet synchronous motor predictive control method based on novel extended state observer

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Embodiment Construction

[0059] The present invention will be further described below in conjunction with accompanying drawing.

[0060]The implementation manners of the present invention are described below through specific examples, and those skilled in the art can easily implement the content disclosed in this specification.

[0061] The control system block diagram of the present invention is as figure 1 Shown is the proposed control system. The motor parameters in the simulation are shown in Table 1.

[0062] Table 1 shows the parameters of the permanent magnet synchronous motor used in the simulation

[0063] Rated power / (KW) 0.43 Rated torque / (N·m) 2.4 Rated current / A 4.2 Rated voltage / V 200 Rated speed / (r / min) 3000 Torque constant / (N·m / A) 0.18 Moment of inertia / (kg / m2) 0.000706 Stator resistance / Ω 0.72 Stator inductance / mH 0.4 Permanent magnet flux linkage / Wb 0.0455 Number of pole pairs 4 Sampling frequency / kHz 25 ...

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Abstract

The invention discloses a permanent magnet synchronous motor predictive control method based on a novel extended state observer, and belongs to the field of permanent magnet synchronous motor control. The method comprises the following main steps: 1, designing an extended state observer based on a superhelix algorithm; 2, designing a parameter adaptive law for the observer in the step 1; and 3, a parameter updating mechanism is designed, and the capability of resisting parameter mismatching is improved. The method has the advantages that 1, the whole control process does not involve any motor parameters, and prediction errors caused by parameter mismatching are avoided; 2, time compensation is carried out by using observation values, a more concise predictive control equation is constructed, and no additional calculation load is added; and thirdly, the observer algorithm is simpler in parameter setting and can be converged in finite time.

Description

technical field [0001] The invention relates to the technical field of motor speed regulation control, and mainly relates to a predictive control method of a permanent magnet synchronous motor based on a novel extended state observer. Background technique [0002] At present, with the development of rare earth permanent magnet materials and electric power devices, permanent magnet synchronous motors have attracted widespread attention for their high power density, high moment of inertia ratio and high efficiency. The traditional PMSM current control methods widely used at present mainly adopt vector control and direct torque control methods. FOC control has problems such as system constraints. Although DTC control has a fast response speed, its torque and flux linkage have large fluctuations. At present, for PMSM control performance, the control system requires fast dynamic response, high operating efficiency, and low noise and vibration. [0003] In response to the above ...

Claims

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Application Information

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IPC IPC(8): H02P21/00H02P21/13H02P21/14H02P21/22H02P25/022H02P27/08
CPCH02P21/0003H02P21/0017H02P21/13H02P21/14H02P21/22H02P25/022H02P27/08H02P2205/07H02P2207/05
Inventor 丁世宏李勇马莉刘陆
Owner JIANGSU UNIV