Novel Rapid Power Switching Strategy and Its Parameter Calculation of Induction Motor-Load Based on Solid State Transfer Switch
Cui Xueshen1, Zhang Zili2, Wang Zezhong1, Li Heming1, Yang Yaping3
1. School of Electrical and Electronic Engineering North China Electric Power University Beijing 102206 China; 3. State Grid Handan electric Power Supply Company Handan 056002 China; 2. State Grid Heibei Cheng’an Electric Power Company Cheng’an 056700 China
Abstract：As an important load of naval vessels, electric plants and steel plants, induction motor should be switched rapidly from main source to alternative source after its power outages. However, the transient inrush produced by such dynamic load under the adverse conditions would have serious consequences. Accordingly, a novel rapid power switching control strategy of induction motor load was proposed based on solid state transfer switch (SSTS) in this paper. The proposed strategy could not only rapidly transfer the critical load from main source to alternative source, but also effectively suppress the transient inrush under the condition of the various phase-angle differences between the two sources. Then, the complex transient of induction motor during the switching control process of the alternative source was analyzed. And the main factors affecting the suppression of the transient inrush were discussed. Besides, the relationship between control parameters and current peak values was explained when the phase-angle difference between the two sources was known. The control parameters could be obtained by the requirement of the current-limit suppression. Finally, the calculation and test results of the stator currents verified that the proposed rapid power switching strategy and the parameters calculation were correct and effective.
崔学深, 张自力, 王泽忠, 李和明, 杨娅萍. 基于固态切换开关的感应电机类负荷电源快速切换新策略及参数计算[J]. 电工技术学报, 2016, 31(18): 21-28.
Cui Xueshen, Zhang Zili, Wang Zezhong, Li Heming, Yang Yaping. Novel Rapid Power Switching Strategy and Its Parameter Calculation of Induction Motor-Load Based on Solid State Transfer Switch. Transactions of China Electrotechnical Society, 2016, 31(18): 21-28.
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