|本期目录/Table of Contents|

[1]王强,胡斐,王天施,等. 无需设置箝位开关的箝位谐振直流环节逆变器[J].电机与控制学报,2018,22(09):48-55.[doi:10.15938/j.emc.2018.09.007]
 WANG Qiang,HU Fei,WANG Tian-shi,et al. Clamped resonant DC-link inverter without setting clamped switching[J].,2018,22(09):48-55.[doi:10.15938/j.emc.2018.09.007]
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 无需设置箝位开关的箝位谐振直流环节逆变器
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
22
期数:
2018年09
页码:
48-55
栏目:
出版日期:
2018-09-15

文章信息/Info

Title:
 Clamped resonant DC-link inverter without setting clamped switching
作者:
 王强1 胡斐2 王天施1 刘晓琴1
 ( 1. 辽宁石油化工大学信息与控制工程学院,辽宁抚顺113001; 2. 国网晋中供电公司,山西晋中030600)
Author(s):
 WANG Qiang1 HU Fei2 WANG Tian-shi1 LIU Xiao-qin1
 ( 1. College of Information and Control Engineering,Liaoning Shihua University,Fushun 113001,China;2. State Grid Jinzhong Power Supply Company,Jinzhong 030600,China)
关键词:
逆变器 无源 箝位 谐振 软开关
Keywords:
inverter passive clamp resonant soft-switching
分类号:
TM 464
DOI:
10.15938/j.emc.2018.09.007
文献标志码:
A
摘要:
为解决多数箝位谐振直流环节逆变器中需设置独立的箝位开关来对箝位过程进行控制所引起的电路损耗增大、控制较为复杂的问题,提出了一种新型无源箝位谐振直流环节逆变器。该逆变器无需设置独立的箝位开关和箝位电容,在变压器的作用下,可将该逆变器的直流母线电压箝位在输入直流电压的1. 1 ~ 1. 3 倍,有效地降低了电压应力。此外,该逆变器的零电压持续时间不受负载电流影响,直接由两个辅助开关器件控制,且这两个辅助开关器件同时导通与关断,有利于简化控制。以各个阶段下的等效电路为基础,对电路的工作过程和软开关实现条件进行分析和实验验证,结果表明开关器件实现了软开关,且在额定功率9 kW 条件下,逆变器的效率达到96. 5%。因此,该逆变器能够有效地提高工作效率。
Abstract:
A novel clamped resonant DC-link inverter was proposed to solve the problem that higher circuit loss and complex control strategy caused by setting independent clamped switching to control the clamping process in most clamped resonant DC-link inverters. The inverter does not need to set independent clamped switching and clamped capacitor. Under the action of transformer,the DC-link voltage can be clamped at 1. 1 - 1. 3 times of input DC-voltage,which reduced the voltage pressure effectively. Besides,
the zero voltage duration of the inverter is not affected by the load current,which is directly controlled by two auxiliary switches. And the two auxiliary switches are simultaneously turned on and off,which is beneficial to simplify the control strategy. According to equivalent circuits under different stages,the working process of the inverter and realization condition of the soft switching were analyzed. The experimental results demonstrated that switching devices achieved soft switching and efficiency reached 96% under the rated power 9kW. Therefore,the proposed topology can improve efficiency effectively.

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备注/Memo

备注/Memo:
收稿日期: 2016 - 07 - 12
基金项目: 国家自然科学基金( 51207069) ; 辽宁省自然科学基金指导计划项目( 20170540586) ; 辽宁石油化工大学国家级科研项目培育基金( 2016PY - 016)
作者简介: 王强( 1981—) ,男,博士,副教授,研究方向为软开关逆变器的电路拓扑及控制;
胡斐( 1991—) ,男,硕士,助理工程师,研究方向为软开关逆变器的电路拓扑及控制;
王天施( 1970—) ,男,博士,副教授,研究方向为电力系统继电保护;
刘晓琴( 1975—) ,女,博士研究生,副教授,研究方向为电力系统故障诊断。
更新日期/Last Update: 2018-10-07