铣磨车变频器主电路的损耗分析及其冷却装置的设计

Main Circuit Loss Analysis and Cooling Device Design of Milling Machine Converter

采用近似法对铣磨车变频器主电路器件功率损耗进行分析,计算出主要器件的损耗,在此基础上设计铣磨车牵引变频器的冷却装置,保证功率器件在结温范围内工作。实验证明,该冷却装置能实现其散热功能,使主要功率器件降温,从而保护功率器件,并确保机车稳定运行。

By approximation method analyzed the main circuit device power losses of milling machine converter,calculated the main components＇ loss, and on this basis, designed cooling device of milling machine traction converter for ensuring the power device operating in the junction temperature range. The experiments proved that the cooling device realized the heat dissipation function, the main power device achieved the cooling effect, thereby protecting the power device, and ensured the stable operation of the locomotive.