INVERTER DEVICE

An inverter device includes a radiator that includes a latent heat storage material transitioning between a solid phase region, a phase transition region, and a liquid phase region, in accordance witha temperature of the latent heat storage material, and that absorbs heat generated in switching elements, a temperature sensor that detects the temperature of the latent heat storage material, and amicrocomputer. The microcomputer includes a determining unit that determines whether a condition is satisfied, the condition being that the temperature of the latent heat storage material is close toa melting point of the latent heat storage material, and that the temperature of the latent heat storage material is on a rising trend, and a supercooling suppressing unit that limits a motor currentwhen the determining unit determines that the condition is satisfied. 本发明提供逆变器装置，该逆变器装置包含：散热器，其内置潜热蓄热材料，并吸收由开关元件产生的热量，该潜热蓄热材料根据温度在固相区域、相变区域以及液相区域之间转变；温度传感器，其检测潜热蓄热材料的温度；以及微型计算机。微型计算机具有：判定单元，其判定是否满足潜热蓄热材料的温度位于熔点附近，并且潜热蓄热材料的温度处于上升