蓄电池电机车充电驱动一体化控制电路的探讨

Research on Control Circuit for Charging and Driving Integration of Battery Electric Locomotives

为了实现蓄电池电机车充电与驱动车载一体化,提出了一种由双向DC/DC变换器、三相逆变/整流桥、永磁同步电机组成的蓄电池电机车充电驱动一体化控制电路结构。通过在三相逆变器和电网、电机之间加入三相逻辑控制开关,实现了电机车充电和驱动的简便与可靠的模式切换,不仅减化了系统电路的整体结构,而且避免了将驱动电机绕组接入充电电路引起的转子振动和噪声。通过试验验证了所提一体化电路结构具有很好的可行性和应用前景。

In order to realize charging and driving integration of battery electric locomotives,a control circuit structure for charging and driving integration of battery electric locomotives is proposed,which consists of bidirectional DC/DC converter,three-phase inverter/rectifier bridge and permanent magnet synchronous motor.By adding three-phase logic control switch between three-phase inverter,power grid and electric motor,a simple and reliable mode switching of electric locomotive charging and driving is realized,which not only reduces the overall structure of the system circuit,but also avoids the rotor vibration and noise caused by connecting the drive motor windings to the charging circuit.Experimental results show that the proposed integrated circuit structure has good feasibility and application prospect.