A novel power converter of high voltage switched reluctance drive

Due to the lack of withstand voltage of power electronic devices, and the voltage equalization among devices is hard to achieve when cascading the devices directly, the development of high-voltage switched reluctance drive has been blocked. Therefore, this paper proposes a novel high-voltage switched reluctance drive power converter structured by low-voltage power electronic devices. It introduces the composition and principles of the novel high-voltage switched reluctance drive power converter, describes its circuit and voltage superposition principle, and establishes the corresponding control strategy. It has been verified by experiments that the novel high voltage switched reluctance drive power converter could decrease the change rate of the motor winding voltage to reduce the threat against winding insulation, and make almost no harmonic pollution on the grid.