Discrete-Time Current Control of Salient Machines With a Simplified Model

The discrete-time model for salient machines with accurate discretization is quite complicated due to different dq -axes inductances. This article proposes an approximation for the discrete-time model with high accuracy and efficient calculation. Various patterns of pulsewidth modulation updating an...

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Bibliographic Details
Published inIEEE transactions on industrial electronics (1982) Vol. 70; no. 7; pp. 6686 - 6698
Main Authors Hu, Mingjin, Hua, Wei, Wu, Zheng, Hu, Yinfeng
Format Journal Article
LanguageEnglish
Published New York IEEE 01.07.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Active resistance
Axes (reference lines)
Computational modeling
Current control
current controller
Delays
discrete time
Mathematical models
Model accuracy
Permanent magnets
Pulse duration
Pulse width modulation
Resistance
salient machines
Stators
Synchronous machines
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Summary:The discrete-time model for salient machines with accurate discretization is quite complicated due to different dq -axes inductances. This article proposes an approximation for the discrete-time model with high accuracy and efficient calculation. Various patterns of pulsewidth modulation updating and current sampling that result in one-sample or a-half-sample computational delay are studied, and corresponding current controllers are directly designed in the discrete-time domain with the simplified model. Decoupled responses between dq -axes are realized in reference tracking. Active resistance is also employed to improve the disturbance rejection. The experimental verification is performed on an interior permanent magnet synchronous machine.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2022.3199858