Topology Exploration and Torque Component Analysis of Double Stator Biased Flux Machines Based on Magnetic Field Modulation Mechanism
| Autor: | Qifang Lin, Shuangxia Niu, Weinong Fu, Tiantian Sheng |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Vector control Computer science Stator 020208 electrical & electronic engineering Energy Engineering and Power Technology Topology (electrical circuits) 02 engineering and technology Counter-electromotive force Topology 01 natural sciences Magnetic flux law.invention Direct torque control Control theory law Harmonics 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Torque Electrical and Electronic Engineering |
| Zdroj: | IEEE Transactions on Energy Conversion. 33:584-593 |
| ISSN: | 1558-0059 0885-8969 |
| Popis: | Biased flux machines (BFMs) have biased magnetic flux in the core and allows flexibility to adjust the field with a dc current. The conventional topology exploration methods for BFMs are based on the flux observation. It is time consuming and ineffective since the initial structure searching process is guideless. Meanwhile, BFMs usually work with arbitrary magnetic field harmonics instead of the fundamental one. The torque components of these machines and their essential operation principle have not been fully revealed. To solve these issues, in this paper, a topology exploration method for BFM based on magnetic field modulation mechanism is proposed, and the torque generating principle is analyzed. With this method, some new BFM structures have been developed and their torque components have been developed. It is shown that various space harmonics have contributed to constant torque rather than the fundamental one. To verify the feasibility of this design method, one double stator BFM is selected as a case study. Simulation and experimental results have verified that this design method is feasible and effective since the prototype has good sinusoidal back electromotive force waveforms and well performance. Besides, it is practical to realize flux weakening and strengthening the control with biased current. |
| Databáze: | OpenAIRE |
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