SS4改机车阻容保护电路工作原理分析

Principle Analysis of the Resistance-capacitance Protection Circuit of SS4G Type Electric Locomotive

为从理论上分析SS4改机车主电路中阻容保护电路电阻烧损的原因,从SS4改机车主电路的基本工作原理出发,对主电路中的阻容保护电路的工作原理进行了详细的阐述。并运用电路的瞬态分析方法,得出了阻容保护电路工作过程中的电压、电流的理论计算公式及该电路中电阻在整个工作过程中的能耗情况,从理论上证实了目前阻容保护回路参数选取不合理,为阻容保护电路的改造提供了理论依据。

To analyze the reason of the resistance-capacitance protection circuit burning loss in SS4G type electric locomotive main circuit, the principle of the resistance-capacitance protection circuit was explained basing on the principle of the commutating circuit of SS4G type electric locomotive. And the transient principle in circuit, was used to find the theoretic expressions of the voltage and the current and how much energy the resistance absorbs during the working process, which proves the parameter of resistance-capacitance protection circuit is reasonless ,and offers theory basis for the design and improvement of the resistance-capacitance protection circuit.