电力机车用蓄电池充放电装置SVPWM技术的研究

Research of charging-discharging device for accumulator of electric locomotive based on SVPWM technology

针对电力机车用15 kVA蓄电池传统充放电装置功率因数低、高谐波污染等不足,将电压型矢量PW M整流逆变技术应用到蓄电池充放电装置中。装置既可用作充电电源,也可用作蓄电池放电时的负载,实现能量的双向流动。实验及检测结果表明SVPW M控制方式可实现网侧电流正弦化、高功率因数、谐波污染小以及充放电功率灵活调控的特点。

According to the shortcomings of the charging and discharging device of 15 kVA accumulator of electric locomotive,such as low power factor and high AC harmonic,the voltage vector pulse width modulation inverting and commuting technology was adopted in accumulator charging-discharging device.The device might be used as charging source and the loads of battery discharging back to electric net with flexible power adjusting,and possessed the performance of double-way transformation of energy.The experiment and test results demonstrate that the device can achieve the goal of sinusoidal current waveform,high input power factor,the lower AC harmonic and the power of charging and discharging controlled flexibly.