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Design of Energy Recovery Power Battery Pack Testing System
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Abstract
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This paper proposes a special power circuit topology and its corresponding control strategy for an energy recovery power battery pack testing system (PBPTS) for electric vehicles. Firstly, the working principle and the related parameter design for the proposed scheme are defined. Secondly, the control strategy of the composite power converter for the PBPTS is described in detail. The improved control includes a highly accurate current closed loop with a non-linear current controller, and an active power reference for the inverter is provided by the result of multiplication between the voltage and current on the dc-bus. Simulations and experimental results demonstrate that the proposed scheme satisfies the requirement for power battery pack testing with large, wide-range currents which could recover the discharging energy to the power grid with high efficiency. The proposed scheme could be used in evaluating the performance of power battery packs for electric vehicles. Copyright (c) 2012 Praise Worthy Prize S.r.l. - All rights reserved.
Keywords:
Active Power
Composite Power Converter
Energy Recovery
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