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The battery energy storage systems (BESS) using modular multilevel converter (MMC) as the grid interfacing converter could integrate multiple independent battery stacks with flexible control capability by assuming the unique circulating current control scheme. Traditionally, the separate battery stacks in MMC are controlled to have the same state of charge (SOC) for maximizing the operational capacity,...
This paper proposes an integrated power conversion system in electric vehicle using modular multilevel converter, whose modular structure could manage the integrated battery cells to simplify the traditional battery manage system (BMS) meanwhile provide the motor driving function and battery charging function without using additional hardware. The all-in topology could therefore maximize the capacity...
This paper proposed a novel battery energy storage system based on modular multilevel converter (MMC), which has several merits compared with two-level and cascaded multilevel battery energy storage systems. The proposed system can manage the state-of-charges (SOCs) of all batteries to be equal to avoid the overcharge or over discharge of single battery stack as traditional. Besides, the inherent...
Distributed generation systems usually include local energy sources, storages, and loads. Almost always, these entities have their own power converters for grid interfacing and energy processing. Having individual converters has advantages like more flexible individual control and simpler design but does not encourage functionality merging. Reduction of semiconductors to arrive at a more compact integrated...
Single-phase stand-alone PV system is suitable for household applications in remote area. Hybrid battery/ultra-capacitor energy storage can reduce charge and discharge cycles and avoid deep discharges of battery. This paper proposes a compact seven switches structure for stand-alone PV system, which otherwise needs nine switches configuration, inclusive of one switch for boost converter, four switches...
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