The paper analyzed the main electric equipment of HVAC (Heating, Ventilation and Air Conditioning) apparatus and introduced structural principle of the auxiliary power system for EMUs.
分析了动车组空调装置的主要用电设备，并对辅助供电系统的结构原理进行了介绍。
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For the same principle, the utility model can be used for controlling the temperature of the electricheatingapparatus.