| 引用本文: | 侯川川,仇志丽,刘建华.双有源桥轻载下的软开关研究[J].电力系统保护与控制,2017,45(8):23-29.[点击复制] |
| HOU Chuanchuan,QIU Zhili,LIU Jianhua.Research on soft switching of dual active bridge with light load[J].Power System Protection and Control,2017,45(8):23-29[点击复制] |
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| 摘要: |
| 通过分析双有源桥单移相控制下的软开关实现条件，得出电压不匹配时在双有源桥轻载范围内不能实现软开关。为此在单移相控制基础上引入单PWM控制，并从理论上分析了轻载时软开关的实现条件，分析表明单PWM控制可以扩大软开关的实现范围，但在零输出功率附近仍然存在盲区。进一步提出双PWM控制，推导得出当双有源桥接近零输出功率时双PWM控制能够实现软开关。最后利用实验平台对轻载情况下的软开关进行分析研究，结果表明与单移相控制相比PWM控制实现软开关的范围增加。 |
| 关键词: 双有源桥 软开关 单移相控制 轻载 PWM控制 |
| DOI：10.7667/PSPC160583 |
| 投稿时间：2016-04-25修订日期：2016-09-25 |
| 基金项目: |
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| Research on soft switching of dual active bridge with light load |
| HOU Chuanchuan,QIU Zhili,LIU Jianhua |
| (China University of Mining and Technology, Xuzhou 221000, China) |
| Abstract: |
| By analyzing the conditions of soft switch under single phase shift control of double active bridge, it is concluded that the soft switch cannot be implemented under light load of double active bridge when the voltage does not match. Therefore, based on single phase-shift control a single PWM control is introduced, and theoretically analyzing soft switching under the light load conditions, the result shows that single PWM control can enlarge the realization of soft switching range, but there is still blind area in the vicinity of the zero output power. This paper proposes a double PWM control, and derives that the dual PWM control can achieve soft switching when the output of double active bridge is close to zero power. Finally, the experiment of light load is analyzed, and the results show that the range of soft switching is increased by PWM control compared with single phase shift control. |
| Key words: dual active bridge soft switch single phase shift control light load PWM control |
