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Self-adaptive compensation strategy for minimum output current position error of bearingless slice motor

A technology of self-adaptive compensation and output current, applied in the control of generator, motor control, motor-generator control, etc., can solve the problems of high estimation accuracy, system instability, inaccurate rotor position estimation, etc. Simple implementation and simple system structure

Inactive Publication Date: 2022-04-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

Bearingless sheet motor drive systems have high requirements for the accuracy of rotor position estimation. Traditional position sensorless algorithms are susceptible to many non-ideal factors such as loop filtering, motor parameter errors, and external disturbances, which will cause inaccurate rotor position estimation and serious Sometimes it will even cause system instability, so it is necessary to compensate the above non-ideal factors

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  • Self-adaptive compensation strategy for minimum output current position error of bearingless slice motor
  • Self-adaptive compensation strategy for minimum output current position error of bearingless slice motor
  • Self-adaptive compensation strategy for minimum output current position error of bearingless slice motor

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0024] This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0025] The invention discloses an adaptive compensation strategy for the minimum output current position error of a bearingless sheet motor. The bearingless sheet motor system has high requirements on the accuracy of rotor position estimation. Aiming at the problem of rotor position estimation errors caused by non-ideal factors such as loop filtering and motor parameter errors in traditional rotor flux observers, based on the idea of ​​disturbance observation method, the The rotor position error is adaptively compensated. This strategy take...

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Abstract

The invention discloses a self-adaptive compensation strategy for a minimum output current position error of a bearingless slice motor, and aims to solve the problem of rotor position estimation error caused by non-ideal factors such as loop filtering and motor parameter error in a traditional rotor flux observer, and the self-adaptive compensation is carried out on the rotor position error based on the thought of a perturbation and observation method. According to the strategy, output current is taken as an observation object, and full compensation of the bearingless slice motor rotor position estimation error is realized. The observed quantity is convenient to obtain, the rotor position error can be accurately reflected, the algorithm is easy to implement, and the system structure is simple.

Description

technical field [0001] The invention relates to the technical field of rotor position error compensation of a bearingless sheet motor, in particular to an adaptive compensation strategy for the minimum output current position error of a bearingless sheet motor. Background technique [0002] Bearingless sheet motors have no mechanical wear, small size, easy maintenance, long life, and high precision, making them irreplaceable in high-performance applications such as centrifuges, sealed pumps, semiconductor industry, life sciences, and aerospace. In order to reduce the system cost, position sensorless algorithms are mostly used, mainly including back EMF integral estimation method, observation method based on synovial film observer, high frequency injection method and Kalman filter method, etc. Bearingless sheet motor drive systems have high requirements for the accuracy of rotor position estimation. Traditional position sensorless algorithms are susceptible to many non-ideal ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/18
CPCH02P21/18H02P2203/03
Inventor 鲍旭聪王晓琳韩冰阳刘思豪王明月
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS