An Optimization Method of Air Cooling Radiator for Mine Integrated Machine

With the advantages of high energy density, high starting torque, strong overload capacity and low failure rate, permanent magnet synchronous motor can be combined with motor controller to design a mine integrated machine for underground coal transportation. The motor controller, as the main heating component of the mine integrated machine, usually adopts the air-cooled radiator structure. Due to the influence of the harsh underground environment, the heat dissipation problem of the motor controller has become the main problem that restricts the reliable operation of the mine integrated machine. In this paper, combined with the operation condition of the mine integrated machine, an optimization design method of the air-cooled radiator of the motor controller is proposed. By establishing the system loss and thermal resistance network model of the motor controller, taking the allowable junction temperature of IGBT module as the constraint condition and the minimum structure of the motor controller radiator as the optimization goal, the structure of the air-cooled radiator of the motor controller is optimized, which reduces the volume and weight of the motor controller. Finally, taking a certain type of mine integrated machine as an example, the correctness of the optimization method is verified by prototype test.