An Improved Modulation Strategy for the Active Voltage Clamping HERIC Inverter
发布时间：2021-07-28
点击次数：
DOI码：10.1109/APEC.2019.8722251
发表刊物：34th Annual IEEE Applied Power Electronics Conference and Exposition (APEC)
关键字：AVC-HERIC；minimum pulse width limitation (MPWL)；pulse width modulation (PWM)；power quality；PV systems
摘要：The active voltage clamping HERIC (AVC-HERIC) inverter can be employed in PV applications due to its high-performance in terms of low leakage currents, high efficiency, and high power density. However, maintaining a high efficiency and good power quality under reactive power injection requires retrofitting the modulation strategies. This paper thus proposes an improved modulation method for the AVC-HERIC topology. The proposed modulation scheme mainly adopts two operation modes to enable the reactive power injection. Moreover, the two operation modes can be switched according to the polarity of the reference voltage. This maintains the efficiency as when the unipolar pulse width-modulation (PWM) strategy is adopted. Additionally, in the region of the minimum pulse width limitation (MPWL), an effective compensation strategy is also proposed in this paper to improve the power quality. Simulations and experiments are performed on a 4-kW AVC-HERIC system, and the results verify the effectiveness of the proposed modulation.
合写作者：Wu, Zhenxi, Tang, Zhongting, Han, Hua, Yang, Yongheng, Blaabjerg, Frede
第一作者：Wang, Hui*
论文类型：会议论文
论文编号：18720697
学科门类：工学
一级学科：电气工程
文献类型：C
页面范围：1938-1942
ISSN号：1048-2334
是否译文：否
发表时间：2019-03-17
收录刊物：EI、SCI
附件：
An_Improved_Modulation_Strategy_for_the_Active_Voltage_Clamping_HERIC_Inverter.pdf