Title: Power Balance of Cascaded H-Bridge Multilevel Converters for Large-Scale Photovoltaic Integration
Abstract:Multilevel cascaded H-bridge converters are promising candidates for large-scale photovoltaic power plants. They allow direct connection to medium-voltage distribution networks without the presence of...Multilevel cascaded H-bridge converters are promising candidates for large-scale photovoltaic power plants. They allow direct connection to medium-voltage distribution networks without the presence of bulky line frequency power transformers. Owing to the stochastically variable nature of irradiance level, ambient temperature, and other factors, power levels in the three phases are expected to be unequal. The power imbalance condition creates unexpected problems with this topology, which was initially designed to operate under balanced power conditions. To deal with this issue, the paper proposes three novel zero-sequence injection methods as an expansion to the conventional zero-sequence injection method. Results obtained from simulations and a 430-V 8-kW three-phase seven-level cascaded H-bridge prototype are presented to verify the effectiveness and feasibility of the proposed methods.Read More
Publication Year: 2015
Publication Date: 2015-02-24
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 289
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot