| 基于混频调制的新型电力电子变压器 |
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| 引用本文： | 舒良才,陈武,王琛,马大俊,蒋晓剑,魏星. 基于混频调制的新型电力电子变压器[J]. 电力系统自动化, 2018, 42(7): 146-152 |
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| 作者姓名： | 舒良才 陈武 王琛 马大俊 蒋晓剑 魏星 |
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| 作者单位： | 东南大学先进电能变换技术与装备研究所, 江苏省南京市 210096,东南大学先进电能变换技术与装备研究所, 江苏省南京市 210096,国网连云港供电公司, 江苏省连云港市 222000,东南大学先进电能变换技术与装备研究所, 江苏省南京市 210096,东南大学先进电能变换技术与装备研究所, 江苏省南京市 210096,南京南瑞继保电气有限公司, 江苏省南京市 211102 |
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| 基金项目： | 国家重点研发计划资助项目(2017YFB0903905)；江苏省研究生实践创新计划项目(SJCX17-0029) |
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| 摘 要： | 现有的电力电子变压器的能级变换级数较多,导致效率不高、体积庞大、成本高,制约了其在实际中的应用。首先,基于混频调制技术,提出了两种新型的基于级联H桥变流器结构的电力电子变压器拓扑,以减少变换级数并实现多端口输入/输出,有利于提升功率密度。然后,详细分析了该电力电子变压器的设计方法与控制策略,利用Simulink验证了所提电力电子变压器拓扑及控制策略的可行性,并与传统电力电子变压器拓扑进行了对比分析。
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| 关 键 词： | 电力电子变压器；级联H桥变流器；混频调制；功率密度 |
| 收稿时间： | 2017-12-04 |
| 修稿时间： | 2018-02-27 |
Power Electronic Transformer Based on Mixed-frequency Modulation |
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| SHU Liangcai,CHEN Wu,WANG Chen,MA Dajun,JIANG Xiaojian and WEI Xing. Power Electronic Transformer Based on Mixed-frequency Modulation[J]. Automation of Electric Power Systems, 2018, 42(7): 146-152 |
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| Authors: | SHU Liangcai CHEN Wu WANG Chen MA Dajun JIANG Xiaojian WEI Xing |
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| Affiliation: | Center for Advanced Power-conversion Technology and Equipment, Southeast University, Nanjing 210096, China,Center for Advanced Power-conversion Technology and Equipment, Southeast University, Nanjing 210096, China,State Grid Lianyungang Power Supply Company, Lianyungang 222000, China,Center for Advanced Power-conversion Technology and Equipment, Southeast University, Nanjing 210096, China,Center for Advanced Power-conversion Technology and Equipment, Southeast University, Nanjing 210096, China and NR Electric Co. Ltd., Nanjing 211102, China |
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| Abstract: | Many series of power conversion links in the existing power electronic transformer(PET)results in low conversion efficiency, huge volume and high cost, which restricts the practical application. Firstly, according to the mixed-frequency modulation, two novel PETs based on cascade H-bridge converter are proposed, which can reduce the number of power conversion links and achieve multiple input and output ports to improve the power density. Then, the simplified design procedure and control strategy are specifically analyzed. The Simulink is employed to verify feasibility of the proposed topologies and control strategy of PET. Moreover, the proposed topologies are compared to the existing PET topology as well. |
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| Keywords: | power electronic transformer cascade H-bridge converter mixed-frequency modulation power density |
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