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Independent inverse decoupling control system of bearingless induction motor

An asynchronous motor and control system technology, applied in control systems, motor control, vector control systems, etc., can solve problems such as inconvenient engineering applications, complex inverse system models, and ignoring stator current dynamic equations. The model and algorithm are simple and easy to use. The effect of engineering technology realization and easy engineering technology realization

Active Publication Date: 2019-01-15
HENAN UNIV OF SCI & TECH
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Problems solved by technology

Searching the existing literature and patents found that there is a complex electromagnetic coupling relationship inside the bearingless motor. For this reason, research on inverse decoupling control has been carried out at home and abroad, but the overall inverse system model is complex, which is not convenient for engineering applications; in the inverse system When modeling, most of the existing research ignores the dynamic equation of the stator current, resulting in the inverse model including the load torque variable that is difficult to predict; in the original system, the nonlinear cross-coupling between the current components needs to be suppressed by the stator current closed loop

Method used

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  • Independent inverse decoupling control system of bearingless induction motor
  • Independent inverse decoupling control system of bearingless induction motor
  • Independent inverse decoupling control system of bearingless induction motor

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Embodiment Construction

[0033] The independent reverse decoupling control system of the bearingless asynchronous motor, including the original system of the bearingless asynchronous motor, the reverse system of the bearingless asynchronous motor set before the original system of the bearingless asynchronous motor, and the four Regulating controller, the four regulating controllers are α displacement regulating controller, β displacement regulating controller, flux linkage regulating controller and speed regulating controller:

[0034] The independent inverse decoupling control system also includes an air-gap flux linkage independent observer and a rotor flux linkage identifier;

[0035] The α displacement adjustment controller, the β displacement adjustment controller, the flux linkage adjustment controller and the speed adjustment controller are all constructed by the pole configuration method;

[0036] The original system of the bearingless asynchronous motor is composed of an independent magnetic ...

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Abstract

Independent inverse decoupling control system of bearingless induction motor, comprises a bearingless induction motor original system, a bearingless induction motor inverse system arranged in front ofthe bearingless induction motor original system, and four regulating controllers arranged in front of the bearingless inverse system. The alpha displacement controller, beta displacement controller,flux linkage controller and rotational speed controller are all constructed by pole placement method. The original system of bearingless induction motor is composed of independent maglev system and independent torque system. The control system is a kind of high-performance maglev decoupling control system with strong real-time performance, It can realize the dynamic decoupling control of bearingless induction motor, simplify the complexity of the system model, avoid the dependence of the inverse model of the magnetic suspension system on the torque system field-oriented mode, and is especiallysuitable for high-speed motor driving applications where the dynamic control performance is high.

Description

technical field [0001] The invention relates to the technical field of novel special AC motor drive and control, in particular to an independent inverse decoupling control system for a bearingless asynchronous motor. Background technique [0002] Bearingless motor is a new type of motor suitable for high-speed operation based on the similarity between magnetic bearing and AC motor stator structure. It has broad application prospects in aerospace, material sealing transmission, advanced manufacturing and other fields. Searching the existing literature and patents found that there is a complex electromagnetic coupling relationship inside the bearingless motor. For this reason, research on inverse decoupling control has been carried out at home and abroad, but the overall inverse system model is complex, which is not convenient for engineering applications; in the inverse system When modeling, most of the existing research ignores the stator current dynamic equation, which lead...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P25/02H02P21/00
CPCH02P21/00H02P21/0003H02P25/02H02P2207/01
Inventor 卜文绍路春晓陈有鹏李彪牛新闻乔岩茹
Owner HENAN UNIV OF SCI & TECH
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