Abstract
The large-scale grid-connected photovoltaic (PV) systems have continuously increased, reaching hundreds of megawatts level. This trend will continue in the upcoming years, thus rising new challenges to the existing PV system configurations and grid converters design. The cascaded H-bridge (CHB) converter could be a possible solution to these challenges in terms of scalability and modularity. However, the CHB converter topology faces the issue of leakage current which could cause safety issues. Moreover, the inherent power imbalance issue of a PV system using a CHB topology needs to be handled. This paper introduces a multiphase isolated DC/DC converter which eliminates the leakage current issue. Additionally, a control strategy has been implemented to deal with the power imbalance between different H-bridges in one leg and also between the three phases. Simulation results are presented to validate the performance of the proposed PV system configuration.
Original language | English |
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Title of host publication | 2014 IEEE International Conference on Industrial Technology (ICIT 2014) |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 455-461 |
Number of pages | 7 |
ISBN (Electronic) | 9781479939398 |
ISBN (Print) | 9781479939404 |
DOIs | |
Publication status | Published - 9 Sept 2014 |
Externally published | Yes |
Event | 2014 IEEE International Conference on Industrial Technology, ICIT 2014 - Busan, Korea, Republic of Duration: 26 Feb 2014 → 1 Mar 2014 |
Conference
Conference | 2014 IEEE International Conference on Industrial Technology, ICIT 2014 |
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Country/Territory | Korea, Republic of |
City | Busan |
Period | 26/02/14 → 1/03/14 |
Keywords
- boost-half-bridge converter
- Cascaded H-bridge converter
- Large-scale PV system
- Multiphase isolated converter
- Power imbalance control