During the actual operation of HXD2 locomotive, many problems appeared on the recharger. This will be a great test for the maintenance beyond the warranty period.

HXD2机车在实际运行中，充电机出现了不少问题，这对出了保修期后的维修工作是个很大的考验。

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This paper introduces the electric principle, technical parameter, performance characteristic and configuration form of auxiliary electrical system for HXD2 type AC driven freight electric locomotive.

在指出火电厂辅机系统现有流量调节方式缺点的基础上，将高压变频调速控制相对传统调速方式的节能原理进行详细的比较分析。

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