强磁场电源软开关DC/DC变换器的研究  

Soft-Switching DC/DC Converter for Intensive Magnetic Field Power Supply

作　　者：陈滋健[1] 刘小宁[1] 段娟[1] 黄连生[1] 

机构地区：[1]中科院等离子体物理研究所,安徽合肥230031

出　　处：《电力电子技术》2008年第2期16-18,共3页Power Electronics

摘　　要：强磁场电源对于输出纹波有极高的要求。采用并联线性有源滤波技术可使输出纹波电流得到充分抑制,而这种有源滤波器的关键部分是可自动跟踪主电源输出的DC/DC变换器。由于功率较大,变换器必须软开关运行。针对强磁场电源的需求,提出了一种基于电流滞环控制的ZVS-CV电路,并论述了其软开关条件和控制方式。仿真及实验结果验证了该DC/DC变换器的良好性能。Intensive magnetic field device demands DC power supplies with very low output ripple.The ripple could be restrained by parallel linear active power filter,which includes a key part,a DC/DC converter.The converter should track the output voltage of the main power supply and, considering very high power, run in soft switching mode.A novel ZVS-CV converter based on hysteretie current control is proposed,the control method and soft-switching conditions are discussed. At last, simulative and experimental results prove this DC/DC converter has good performance.

关 键 词：变换器 强磁场 电源/电流滞环控制 软开关 

分 类 号：TM46[电气工程—电器]