电动汽车车载电机供电性能优化研究
发布时间：2018-08-18 12:19
【摘要】：针对常规的充放电机的功率因数低、效率低、谐波大等缺点,为提高供电效率,提出一种由双向AC/DC变换器和三电平半桥/全桥变换器两级结构组成的车载式充放电机,系统具有独立的控制环节,前级双向AC/DC变换器采用改进的占空比预测控制策略,而后级双向DC/DC变换器采用PWM加移相控制方式,实现了网侧和车载电池侧控制系统的解耦,分析了车载充放电机的原理,上述系统实现了电网侧电流的正弦化和实现单位功率因数整流,具有动态响应快,跟踪效果好,效率高等优点,并对供电性能进行优化,通过仿真验证了车载供电系统的有效性和可行性。
[Abstract]:Aiming at the disadvantages of low power factor, low efficiency and large harmonics of the conventional charging and discharging machine, in order to improve the power supply efficiency, a vehicle-borne charging and discharging machine consisting of a bi-directional AC/DC converter and a three-level half-bridge / full-bridge converter is proposed. The system has an independent control link. The former bi-directional AC/DC converter adopts an improved duty cycle predictive control strategy, and the latter uses the PWM phase-shift control mode to realize the decoupling between the grid-side control system and the vehicle-mounted battery side control system. The principle of on-board charging and discharging machine is analyzed. The system realizes sinusoidal current and rectifier of unit power factor, which has the advantages of fast dynamic response, good tracking effect and high efficiency, and the power supply performance is optimized. The validity and feasibility of the on-board power supply system are verified by simulation.
【作者单位】： 辽宁工程技术大学;
【分类号】：U469.72
，
本文编号：2189449
[Abstract]:Aiming at the disadvantages of low power factor, low efficiency and large harmonics of the conventional charging and discharging machine, in order to improve the power supply efficiency, a vehicle-borne charging and discharging machine consisting of a bi-directional AC/DC converter and a three-level half-bridge / full-bridge converter is proposed. The system has an independent control link. The former bi-directional AC/DC converter adopts an improved duty cycle predictive control strategy, and the latter uses the PWM phase-shift control mode to realize the decoupling between the grid-side control system and the vehicle-mounted battery side control system. The principle of on-board charging and discharging machine is analyzed. The system realizes sinusoidal current and rectifier of unit power factor, which has the advantages of fast dynamic response, good tracking effect and high efficiency, and the power supply performance is optimized. The validity and feasibility of the on-board power supply system are verified by simulation.
【作者单位】： 辽宁工程技术大学;
【分类号】：U469.72
，
本文编号：2189449
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