串联逆变器输出型高频融冰电源控制方法
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长沙理工大学 电气与信息工程学院 湖南省长沙市 410114

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湖南省教育厅重点项目资助(19A018)


Control Method for The High Frequency Deciting Equipment Based on seriesed conventer
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1.School of Electrical and Information Engineering,Changsha University of Science Technology,410114;2.Changsha,China

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    摘要:

    本文研究了一种高频高压激励电源,利用高频电场下覆冰的有损电介质热和电流集肤效应焦耳热进行融冰。输入侧采用基于空间矢量(SVM)调制技术的PWM可控整流器,降低谐波含量和调节功率因数;逆变模块端采用变流器串联实现大功率输出,利用载波相移(CPS-SPWM)调制技术产生触发信号控制电路,以降低开关工作频率;采用电压电流双闭环加重复PR控制来获得稳定的电压输出,提高系统抗周期性干扰性能。仿真实验表明,该高频激励源输出频率可达到1 kHz,电压输出波形好,谐波含量低,为高频融冰装置实用化研发提供参考。

    Abstract:

    A high-frequency high-voltage excitation power source is studied in this paper,the dielectric heat and current skin effect Joule heat produced under high-frequency electric field are used to melt ice. The PWM controllable rectifiers are applied in the former input based on Space vector (SVM) modulation technology to reduce harmonic content and adjust the power factor; the seried converters are adopted to realize the large power, and the Carrier phase shift(CPS-SPWM) modulation technology is used to generate the trigger signal for the control circuit, to reduce the switching operating frequency.The control strategy based on voltage and current double closed loop plus repeat PR control loop is adopted to obtain stable voltage output,the system dynamic responsiveness, and the anti-periodic interference performance are improved. Simulation experiments results show that the output frequency of the high-frequency excitation source can reach 1 kHz, better voltage output waveform, and the low harmonic content, which provide a reference for the practical development of high-frequency ice melting devices.

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  • 收稿日期:2020-09-14
  • 最后修改日期:2020-11-23
  • 录用日期:2020-12-15
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