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Cascaded H-Bridge with Bidirectional Boost Converters for Energy Storage
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| Author(s) |
Ionut TRINTIS, Stig MUNK-NIELSEN, Remus TEODORESCU |
| Abstract |
This paper presents the design and control of a cascaded H-bridge converter for energy storage withbidirectional boost converter as charge/discharge unit. The disadvantage of the second harmonic onthe main energy storage unit as well as its voltage variation with the state of charge is solved by thisstructure. The independent phase grid control is proposed for this topology. This strategy is able tocontrol the average dc-link voltage for each phase independently and to balance the cells capacitorsvoltages. The balance of the energy storage units is achieved by controlling independently each cellcharge/discharge current, together with the capacitors voltage control and balancing. Converter cellloss distribution and total loss over a wide battery voltage variation is calculated for charge/dischargeoperation modes for a 4.16 kV grid coupling point and 5 MW rated power. |
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| Filename: | 0866-epe2011-full-20020759.pdf |
| Filesize: | 602.9 KB |
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| Type |
Members Only |
| Date |
Last modified 2012-01-26 by System |
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