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近年,随着铁道车辆性能和功能的不断提高,对大容量、高效率和小型化的辅助电源装置的需求不断增加。东芝公司开发了新型的电源辅助装置,在其逆变回路中采用高耐压、大电流和低损耗的全碳化硅(All-Si C)高频开关元件——半导体开关及反向并联二极管均由碳化硅(Si C)元件构成,在确保装置额定输出容量不变的同时缩小了绝缘型变压器的外形尺寸,从而实现了辅助电源装置的高效化和小型化。另外,为了提高铁道车辆辅助电路的整体效率以实现节能目标,必须提高空调负载的效率,为此,将空调压缩机驱动方式由目前主流的开/关控制转换为逆变器控制电机转速的方式,在空调装置中也采用了与辅助电源装置同样的All-Si C元件,经试验验证,可降低空调装置的能耗。
In recent years, with the continuous improvement of the performance and functions of railway vehicles, there is an increasing demand for large-capacity, high-efficiency and miniaturized auxiliary power units. Toshiba has developed a new power auxiliary device that uses high-withstand voltage, high current, and low loss All-Si C high-frequency switching components in its inverter circuit - the semiconductor switches and the antiparallel diodes It is made of silicon carbide (SiC). It can reduce the size of the insulated transformer while ensuring the rated output capacity of the device, so that the auxiliary power supply can be made more efficient and miniaturized. In addition, in order to improve the overall efficiency of railway vehicle auxiliary circuits in order to achieve energy-saving goals, it is necessary to improve the air conditioning load efficiency. Therefore, the air conditioner compressor driving mode is changed from the current mainstream on / off control mode to the inverter control motor speed , Also uses the same All-Si C components as the auxiliary power supply unit in the air-conditioning unit, the experimental verification, can reduce the energy consumption of air conditioning unit.