DC DC convertors can convert the EV's high voltage DC power supply into the low voltage DC power supply. In order to design an excellent convertor one must be guided by theory of automatic control. The principl...DC DC convertors can convert the EV's high voltage DC power supply into the low voltage DC power supply. In order to design an excellent convertor one must be guided by theory of automatic control. The principle and the method of design, modeling and control for DC DC convertors of EV are introduced. The method of the system response to a unit step function input and the frequency response method are applied to researching the convertor's mathematics model and control characteristic. Experiments show that the designed DC DC convertor's output voltage precision is high, the antijamming ability is strong and the adjustable performance is fast and smooth.展开更多
针对现有充放电装置存在的问题,提出通过补偿电路以提高充放电装置的效率。简单介绍了其工作过程并完成了主电路关键元件的参数设计如开关管、励磁电感、谐振电感、谐振电容、滤波电容等。搭建了868 W,95 k Hz的实验平台进行实验测试,...针对现有充放电装置存在的问题,提出通过补偿电路以提高充放电装置的效率。简单介绍了其工作过程并完成了主电路关键元件的参数设计如开关管、励磁电感、谐振电感、谐振电容、滤波电容等。搭建了868 W,95 k Hz的实验平台进行实验测试,实验结果表明:该装置可以实现对蓄电池自主充放电,即在充电过程中先以10 A恒流充电,其纹波为4%,再以90 V恒压充电,其纹波为0.7%。在放电过程中以10 A恒流放电,且稳定可靠,延长了蓄电池的使用寿命。展开更多
提出一种适用于V2G(Vehicle tǒgrid,VZG)和电网-蓄电池储能等系统的单级双向隔离AC-DC变换器。该变换器可实现高效率、高功率密度,及能量双向传输。该文介绍该变换器的工作原理、功率传输特性,分析并设计软开关ZVS(zero voltage switch...提出一种适用于V2G(Vehicle tǒgrid,VZG)和电网-蓄电池储能等系统的单级双向隔离AC-DC变换器。该变换器可实现高效率、高功率密度,及能量双向传输。该文介绍该变换器的工作原理、功率传输特性,分析并设计软开关ZVS(zero voltage switching,ZVS)的实现,最终可在宽增益范围和全负载情况下实现软开关,并制作一台500 W的实验样机进行验证。展开更多
文摘DC DC convertors can convert the EV's high voltage DC power supply into the low voltage DC power supply. In order to design an excellent convertor one must be guided by theory of automatic control. The principle and the method of design, modeling and control for DC DC convertors of EV are introduced. The method of the system response to a unit step function input and the frequency response method are applied to researching the convertor's mathematics model and control characteristic. Experiments show that the designed DC DC convertor's output voltage precision is high, the antijamming ability is strong and the adjustable performance is fast and smooth.
文摘提出一种适用于V2G(Vehicle tǒgrid,VZG)和电网-蓄电池储能等系统的单级双向隔离AC-DC变换器。该变换器可实现高效率、高功率密度,及能量双向传输。该文介绍该变换器的工作原理、功率传输特性,分析并设计软开关ZVS(zero voltage switching,ZVS)的实现,最终可在宽增益范围和全负载情况下实现软开关,并制作一台500 W的实验样机进行验证。
