Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 31, Issue 7, Pages 4778-4794Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2015.2477882
Keywords
Active power decoupling; duality principle; photovoltaic (PV) systems; single-phase systems; twice ripple power
Categories
Funding
- National Natural Science Foundation of China [61573382]
- National High-tech R&D Program of China [2012AA051601]
- Hunan Provincial Natural Science Foundation of China [14JJ5035]
- Project of Innovation-driven Plan in Central South University [2015CXS006]
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Active power decoupling methods are developed to deal with the inherent ripple power at twice the grid frequency in single-phase systems generally by adding active switches and energy storage units. They have obtained a wide range of applications, such as photovoltaic (PV) systems, light-emitting diodes (LEDs) drivers, fuel cell (FC) power systems, and electric vehicle (EV) battery chargers, etc. This paper provides a comprehensive review of active power decoupling circuit topologies. They are categorized into two groups in terms of the structure characteristics: independent and dependent decoupling circuit topologies. The former operates independently with the original converter, and the latter, however, shares the power semiconductor devices with the original converter partially and even completely. The development laws for the active power decoupling topologies are revealed from the view of duality principle, switches sharing, and differential connection. In addition, the exceptions and special cases are also briefly introduced. This paper is targeted to help researchers, engineers, and designers to construct some new decoupling circuit topologies and properly select existing ones according to the specific application.
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