王永安,周羽生,袁肖雷.高频融冰激励电源及其控制策略的研究[J].电测与仪表,2019,56(10):140-146. wangyongan,zhouyusheng,yuanxiaolei.Study on high frequency melting ice excitation source and control strategy[J].Electrical Measurement & Instrumentation,2019,56(10):140-146.
高频融冰激励电源及其控制策略的研究
Study on high frequency melting ice excitation source and control strategy
Ice-melting with high frequency excitation is a new method of ice-melting for transmission lines． The icing is a lossy dielectric under high frequency electric field． The ice is melted by lossy dielectric heat and the skin effect of high frequency current． High frequency melting ice excitation device is the key device of the ice melting technology．In paper a 5kHz high frequency melting ice excitation device is studied by achieving the output of large capacity system through inverter parallel．The conventional SPWM is more difficult to achieve high frequency output．A drive signal of the inverter switches is generated using CPS-SPWM technique，reduce the switching frequency of the switch， improve the output frequency of the system． A control strategy of double loop and circulation current suppression is put forward，the output voltage loop to ensure a stable output voltage and the current loop using inductor current feedback to improve the system dynamic response，through the circulation current suppression restraining the circulation current between modules．The uniformity of the power distribution module is improved．The simulation results validate the feasibility of the design of the device and the control method．
