Research on on-board charging system of mine-used electric locomotive
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摘要: 针对现有矿用铅酸蓄电池电机车充电系统存在电能质量差、续航能力小、蓄电池使用寿命短、 蓄电池充电装置与电机车驱动系统分离等问题，设计了一种新型一体化车载充电系统。该系统由前级PWM整流电路和后级Buck电路串联组成，充电时将电动机绕组重构为PWM整流电路的升压电感，组成一体化车载充放电电路；采用超级电容代替蓄电池作为储能元件，可实现车载快速充放电功能。仿真结果表明，与传统充电系统相比，该系统充电时间短、效率高，可实现功率因数校正、抑制纹波、高效快速充放电等功能。Abstract: In view of problems of low power quality, low cruising power, short service life of battery, separation between battery charging device and locomotive driving system existed in current charging system of mine-used electric locomotive with lead-acid battery, a new integrated on-board charging system was designed. The system is composed of the front-stage PWM rectifier circuit and the back-stage Buck circuit in series. When charging, the motor windings are reconstructed into the boost inductance of the PWM rectifier circuit to form an integrated on-board charging and discharging circuit. The supercapacitor is used to replace the battery as the energy storage element, which can realize quick on-board charging and discharging function. The simulation results show the system has shorter charging time and higher efficiency, and can realize functions such as power factor correction, ripple suppression, efficient and rapid charging and discharging compared with the traditional charging system.
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期刊类型引用(9)
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