|本期目录/Table of Contents|

[1]王强,单瑞香,王天施,等. 无需设定电感电流阈值的并联谐振直流环节逆变器[J].电机与控制学报,2015,19(10):23-29.[doi:10. 15938 /j. emc. 2015. 10. 004]
 WANG Qiang,SHAN ui-xiang,WANG Tian-shi,et al. Parallel resonant DC link inverter without inductor current setting threshold [J].,2015,19(10):23-29.[doi:10. 15938 /j. emc. 2015. 10. 004]
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
19
期数:
2015年10
页码:
23-29
栏目:
出版日期:
2015-12-31

文章信息/Info

Title:
 Parallel resonant DC link inverter without inductor current setting threshold

作者:
 王强 单瑞香 王天施 刘晓琴
 ( 辽宁石油化工大学 信息与控制工程学院,辽宁 抚顺 113001)
Author(s):
 WANG Qiang SHAN Rui-xiang WANG Tian-shi LIU Xiao-qin
 ( College of Information and Control Engineering,Liaoning Shihua University,Fushun 113001,China)
关键词:
电流阈值 并联谐振 逆变器 软开关 晶闸管
Keywords:
  current threshold parallel resonant inverter soft-switching thyristor
分类号:
TM 464
DOI:
10. 15938 /j. emc. 2015. 10. 004
文献标志码:
A
摘要:
为提高逆变器的效率,提出了一种新型并联谐振直流软开关逆变器的拓扑结构,在辅助谐 振电路中设置了 1 对反并联的晶闸管来控制谐振电流,使逆变器的直流环节电压周期性下降到零, 逆变器的主开关可以在零电压条件下完成切换,同时辅助开关器件在逆变器换流过程中也实现了 零电压开关或零电流开关。该逆变器在换流过程中不需要设定和负载有关的电感电流阈值,有利 于降低辅助电路损耗和简化控制。对电路在 1 个开关周期内的各个工作模式进行了理论分析,给出了设计规则,并建立起辅助谐振电路损耗和分压电容的电压偏差量的数学模型。制作了一台5kW 的实验样机,实验结果表明逆变器的工作过程符合原理分析,所以该软开关逆变器可以有效 地提高效率。

Abstract:
 A novel parallel resonant DC link soft-switching inverter was proposed to improve the efficiency of inverter. A pair of anti-parallel thyristor in the auxiliary resonant circuit was used to control resonant current so that DC link voltage of the inverter decreased to zero periodically. Zero-voltage operation of all main switching devices in inverter was realized. Auxiliary switches were also operated under zero voltage switching or zero current switching in the commutation process. Inductor current threshold relative to load was not set in the commutation process,which was beneficial to reduce the loss of auxiliary circuit and simplify control strategy. Every operation mode in a switching period was analyzed in theory. The design rule was also given. Furthermore,the mathematical models for auxiliary resonant circuit loss and voltage deviation of voltage dividing capacitors were established. A 5 kW laboratory prototype was built. Experi-mental results demonstrate that working process of the inverter accord with principle analysis. Therefore, the proposed soft-switching inverter can effectively improve efficiency.

参考文献/References:

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备注/Memo

备注/Memo:
 收稿日期: 2014 - 09 - 21
基金项目: 国家自然科学基金( 51207069) ; 辽宁省教育厅科研项目( L2013146) ; 中国博士后科学基金( 2013M531349) ; 江苏省博士后科研资助 计划项目( 1301105C)
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;
单瑞香( 1990—) ,女,硕士研究生,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: 2016-03-10