电机气隙磁场调制行为及其转矩分析

doi:10.19595/j.cnki.1000-6753.tces.190255

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Abstract The synchronous and asynchronous modulation behaviors are the most basic modulation principles in electric machines. However, the relationship between synchronous/ asynchronous modulation behavior and torque component is complicated, whose key characteristics are defined, compared, and exemplified based on the “general airgap field modulation theory” in this paper. The torque components of general magnetic field modulated machines are summarized and classified, and an important rule is expounded. Based on the theoretical analysis, this paper studies the possible operation modes, existence conditions and torque components of brushless doubly-fed induction machines (BDFIM), and summarizes the similarities and differences between it and the electrically excited synchronous machine in single-fed synchronization mode. The topology of the BDFM with composite rotor is depicted, and the role of auxiliary short-circuited coils and the modulation operator are provided qualitatively, based on which the potential advantages on the magnetic field coupling ability and average electromagnetic torque are discussed quantitatively. Finally, the modulation behaviors and torque characteristics of field modulated machines featuring simple salient poles are analyzed in a unified way.

Key words： Magnetic field modulation synchronous/asynchronous modulation behavior synchronous/asynchronous torque component brushless doubly-fed machines

Received: 13 March 2019 Published: 12 March 2020

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TM301

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	Cheng Ming
	Wen Honghui
	Zeng Yu
	Jiang Yongjiang

Cite this article:

Cheng Ming,Wen Honghui,Zeng Yu等. Analysis of Airgap Field Modulation Behavior and Torque Component in Electric Machines[J]. Transactions of China Electrotechnical Society, 2020, 35(5): 921-930.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.190255 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I5/921

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