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In this paper the research object for battery comprehensive test system of converter part, in view of its high voltage, high current, direct current, voltage full range of harmonic dc current ripple coefficient 0.2% or less, and the side unit power factor, no harmonic pollution, quick response and requirements, design the three phase current type current transformer is the core of the current transformer circuit and based on dq synchronous rotating coordinate transformation of direct current double closed loop control strategy, puts forward the space vector pulse width modulation technique is applied to battery comprehensive test system, compared with the conventional SVPWM algorithm relative superiority of SPWM algorithm. In the PSIM simulation research, through the simulation results that the testing system of open loop control, single closed-loop control, double closed loop control, battery load mutation when system working conditions in the laboratory conditions, the related experimental verification, obtained the ideal output current waveform, reached the battery comprehensive test system requirements.
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