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Nonlinear inverse decoupling controller for bearingless synchronous reluctance motor and construction method thereof

A synchronous reluctance motor, bearingless technology, used in motor generator control, AC motor control, electronic commutation motor control, etc., can solve the problem that the parameters of the decoupling compensator are easily affected by magnetic saturation, and dynamic decoupling is not realized. To achieve the effect of simple structure, simplified control system design and simple control method

Inactive Publication Date: 2011-01-26
JIANGSU UNIV
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Problems solved by technology

The decoupling of the control system can be achieved by using the method of connecting feedforward compensators in series in modern control theory, but the parameters in the decoupling compensator are easily affected by magnetic saturation
By simplifying approximate processing, methods such as online table lookup and real-time parameter detection can reduce magnetic saturation and reduce the coupling between radial levitation force and torque. However, the above decoupling methods can only achieve electromagnetic torque and radial levitation. Static decoupling between forces does not achieve dynamic decoupling in a complete sense

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  • Nonlinear inverse decoupling controller for bearingless synchronous reluctance motor and construction method thereof
  • Nonlinear inverse decoupling controller for bearingless synchronous reluctance motor and construction method thereof
  • Nonlinear inverse decoupling controller for bearingless synchronous reluctance motor and construction method thereof

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Embodiment Construction

[0031] Further description will be made below in conjunction with the accompanying drawings. It is composed of Park inverse transformation, Clark inverse transformation and current hysteresis PWM inverter connected sequentially, such as figure 1 As shown, the first and second expanded current hysteresis PWM inverters 2 and 3 are formed by sequentially connecting Park inverse transforms 21, 31, Clark inverse transforms 22, 32 and current hysteresis PWM inverters 23, 33. The first and second extended current hysteresis PWM inverters 2 and 3 are used as an integral part of the compound controlled object 5 .

[0032] Such as figure 2 As shown, two extended current hysteresis PWM inverters 2, 3 and bearingless synchronous reluctance motor 1 constitute a compound controlled object 5, in which the bearingless synchronous reluctance motor winding is composed of torque winding and radial levitation force winding composition. Such as image 3 As shown, the α-order inverse system 4 ...

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Abstract

The invention discloses a nonlinear inverse decoupling controller for a bearingless synchronous reluctance motor and a construction method thereof, and is suitable for high-performance decoupling control of the bearingless synchronous reluctance motor. Two Park inverters, two Clark inverters and two current hysteresis PWM inverters form two expanded current hysteresis PWM inverters together; the two expanded current hysteresis PWM inverters and a controlled bearingless synchronous reluctance motor are taken as a whole to form a compound controlled object; an alpha-order inverse system is connected in series before the compound controlled object so as to compound a pseudo linear system consisting of a speed subsystem and two position subsystems; a linear close-loop controller is designed for the pseudo linear system according to a linear system design method; and finally the linear close-loop controller, the alpha-order inverse system, and the expanded current hysteresis PWM inverters together form the nonlinear inverse decoupling controller for nonlinear dynamic decoupling control of the bearingless synchronous reluctance motor.

Description

technical field [0001] The invention relates to a nonlinear inverse decoupling controller of a bearingless synchronous reluctance motor and a construction method of the decoupling controller, which are suitable for high-performance control of a bearingless synchronous reluctance motor. Bearingless synchronous reluctance motors have broad application prospects in special electric drive fields such as machine tool electric spindles, turbomolecular pumps, centrifuges, compressors, electromechanical energy storage, and aerospace, and belong to the technical field of electric drive control equipment. Background technique [0002] The bearingless synchronous reluctance motor meets the requirements of modern industry for high-speed, non-lubricated, friction-free, and maintenance-free high-performance drive motors. It is a new type of synchronous reluctance motor with excellent performance of magnetic bearings and motor. Compared with the traditional bearingless motor, the bearingl...

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Application Information

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IPC IPC(8): H02P21/14H02P6/08H02P21/00H02P25/022H02P25/08
Inventor 朱熀秋张婷婷杨泽斌刁小燕诸德宏
Owner JIANGSU UNIV
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