关键词: 内模原理, 一体化拓扑, 零序电流, 电池加热

Abstract: An integrated topology for battery heating based on motor drive reconfiguration was proposed. The integrated topology reused the electrical components of the drive system of EVs for electric/electric energy conversion, eliminating additional hardware. The magnetic energy of the motor was used as the intermediate energy, and the three-phase windings inductance was used as the energy storage inductance of the equivalent Buck/Boost circuit. A capacitor was introduced to connect with the neutral line of the motor to form a zero-sequence path, which was used as an external energy storage element for energy exchange with the battery. Electrochemical heat was generated inside the battery by using the battery impedance through the alternating charge/discharge current. Considering that the ideal AC heating current was sinusoidal, using PR control based on internal model principle could theoretically realize the non-static error following of the sinusoidal input. The simulation results show that the control system can effectively track the input and charge/discharge the battery with high power to achieve self-heating.

Key words: internal model principle, integrated topology, zero-sequence current, battery heating