具有延时补偿的磁悬浮轴承开关功率放大器数字单周期控制

doi:10.19595/j.cnki.1000-6753.tces.161952

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Abstract Adopted in switching power amplifier for magnetic suspension bearings, digital one-cycle control has the advantages of simple structure, easy realization and rapid response. Time delay is one of the major disadvantages of the traditional digital one-cycle control, which will influence the system stability. The principle of one-cycle control was analyzed with the consideration of resistance voltage drop for more precise control. Time delay was estimated according to the digital control system. Two models with compensation of time delay were derived. Simulation and experiments were carried out. Simulation and experimental results show that the current can follow the reference with the precise algorithm, proving its feasibility. With compensation of time delay, there is hardly any phase shift between the coil current and reference, which verifies the effectiveness of the proposed models. The tracking waveform is better with the model II, demonstrating its superiority.

Key words： Magnetic suspension bearings switching power amplifier digital one-cycle control compensation of time delay

Received: 12 December 2016 Published: 26 February 2018

PACS:

TN722

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	Zhou Jie
	DengZhiquan
	Li Kexiang
	He Jiaxi

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Zhou Jie,DengZhiquan,Li Kexiang等. Digital One-Cycle Control Algorithm with Compensation of Time Delay for Switching Power Amplifier in Magnetic Suspension Bearings[J]. Transactions of China Electrotechnical Society, 2018, 33(3): 652-661.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.161952 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I3/652

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