An Improved Modulation Strategy for the Active Voltage Clamping HERIC Inverter

Hui Wang, Zhenxi Wu, Zhongting Tang, Hua Han, Yongheng Yang, Frede Blaabjerg

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2 Citationer (Scopus)

Abstrakt

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.
OriginalsprogEngelsk
TitelProceedings of the IEEE Annual Applied Power Electronics Conference and Exposition (APEC 2019)
Antal sider5
Udgivelses stedUSA
ForlagIEEE Press
Publikationsdatomar. 2019
Sider1938-1942
ISBN (Trykt)978-1-5386-8331-6
ISBN (Elektronisk)978-1-5386-8330-9
DOI
StatusUdgivet - mar. 2019
Begivenhed34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, USA
Varighed: 17 mar. 201921 mar. 2019

Konference

Konference34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
LandUSA
ByAnaheim
Periode17/03/201921/03/2019
SponsorIEEE Industry Applications Society (IAS), IEEE Power Electronics Society (PELS), Power Sources Manufacturers Association (PSMA)
NavnIEEE Applied Power Electronics Conference and Exposition (APEC)
ISSN2470-6647

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  • Citationsformater

    Wang, H., Wu, Z., Tang, Z., Han, H., Yang, Y., & Blaabjerg, F. (2019). An Improved Modulation Strategy for the Active Voltage Clamping HERIC Inverter. I Proceedings of the IEEE Annual Applied Power Electronics Conference and Exposition (APEC 2019) (s. 1938-1942). IEEE Press. IEEE Applied Power Electronics Conference and Exposition (APEC) https://doi.org/10.1109/APEC.2019.8722251