A Highly Reliable and High-Efficiency Quasi Single-Stage Buck–Boost Inverter
A Highly Reliable and High-Efficiency Quasi Single-Stage Buck–Boost Inverter
复制标题
DOI：
10.1109/tpel.2016.2598251
复制
发表时间：
2017-06
影响因子：
6.7
通讯作者：
Ashraf Ali Khan;Honnyong Cha;H. Ahmed;Juyong Kim;Jintae Cho
中科院分区：
文献类型：
--
作者：
Ashraf Ali Khan;Honnyong Cha;H. Ahmed;Juyong Kim;Jintae Cho
为了调节具有宽输入直流电压变化的逆变器系统中的输出交流电压，优选降压-升压功率调节系统。提出了一种新型的高效率准单级单相Buck-Boost逆变器。该逆变器可以解决电流击穿问题，消除PWM死区时间，从而大大提高了系统的可靠性。它允许双向功率流，可以使用MOSFET作为开关器件，而无需体二极管导通。可以消除MOSFET体二极管的反向恢复问题和相关损耗。MOSFET的使用有助于降低开关和导通损耗。此外，所提出的逆变器可以操作简单的脉冲宽度调制（PWM）控制，并可以设计在更高的开关频率，以减少无源元件的体积。详细的实验结果显示了所提出的逆变器的优点。效率测量表明，使用简单的PWM控制，建议逆变器可以获得97.8%的峰值效率为1.1千瓦的输出功率在30 kHz的开关频率。
To regulate an output ac voltage in inverter systems having wide input dc voltage variation, a buck–boost power conditioning system is preferred. This paper proposes a novel high-efficiency quasi single-stage single-phase buck–boost inverter. The proposed inverter can solve current shoot-through problem and eliminate PWM dead time, which leads to greatly enhanced system reliability. It allows bidirectional power flow and can use MOSFET as switching device without body diode conducting. The reverse recovery issues and related loss of the MOSFET body diode can be eliminated. The use of MOSFET contributes to the reduction of switching and conduction losses. Also, the proposed inverter can be operated with simple pulse width modulation (PWM) control and can be designed at higher switching frequency to reduce the volume of passive components. The detailed experimental results are provided to show the advantages of the proposed inverter. Efficiency measurement shows that using simple PWM control the proposed inverter can obtain peak efficiency of 97.8% for 1.1-kW output power at 30-kHz switching frequency.