Freewheeling Current and Suppression in Inverter of Stand-Alone Photovoltaic Lighting System
-
摘要: 分析了独立光伏照明系统中感性和容性负载的串并联谐振逆变电路时开关管死区内的续流特性.用高次谐波的感性电流抵消基波容性电流,可减小串并联谐振开关管死区内的续流,抑制系统的谐波成分和电磁干扰,提高功率因数.实验结果表明,采用上述方法,使独立光伏照明系统的串并联谐振电路的续流值减小到约67 mA.Abstract: Freewheeling current during dead-time of two switching transistors was analyzed.The switching transistors work in a series-parallel resonant inverter circuit of a stand alone photovoltaic lighting system with inductive or capacitive loads.A method to suppress the freewheeling current was proposed.The method uses high-order inductive harmonic current to compensate capacitive fundamental current.It also reduces the harmonic component in current and electromagnetic interferences,and improves the power factor.Experiments show that the freewheeling current suppressed with the proposed method is as low as about 67 mA.
-
Key words:
- photovoltaic system /
- inverter /
- series-parallel resonance /
- freewheeling current
-
SCHAEFER J C.Review of photovoltaic power plant performance and economics[J].IEEE Trans.on Energy Conversion,1990,5(2):232-238.[2] CHUNG H S H,TSE K K,HUI S Y R,et al.A novel maximum power point tracking technique for solar panels using aSEPIC or Cuk converter[J].IEEE Trans.on Power Electronics,2003,18(3):717-724.[3] SOLODOVNIK E V,SHENGYI LIU,DOUGLAS R A.Power controller design for maximum power tracking in solar installations[J].IEEE Trans.on Power Electronics,2004,19(5):1 295-1 304.[4] WALKER G R,SERNIA P C.Cascaded DC-DC converter connection of photovoltaic modules[J].IEEE Trans.on Power Electronics,2004,19(4):1 130-1 139.[5] STRONG S J.World overview of building-integrated photovoltaics[C]//Photovolmic Specialists Conference,1996.,Conference Record of the Twenty Fifth IEEE,Washington:IEEE Press,1996:1 197-1 202.[6] 张卫平.绿色电源现代电能变换技术及应用[M].科学出版社,2001.[7] 路秋生.高频交流电子镇流技术与应用[M].人民邮电出版社,2004.[8] 钱照明.电磁兼容设计基础及干扰抑制技术[M].浙江大学出版社,2000.[9] LIN R L,CHEN Y T,LIN R L.Electronic ballast for fluorescent lamps with phase-locked loop control scheme[J].IEEE Trans.on Power Electronics,2006,21(1):254-262.[10] WAKABAYASHI F T,CANESIN C A.An improved design procedure for LCC resonant filter of dimmable electronic ballasts for fluorescent lamps,based on lamp model[J].IEEE Trans.on Power Electronics,2005,20(5):1 186-1 196.
点击查看大图
计量
- 文章访问数: 1413
- HTML全文浏览量: 72
- PDF下载量: 401
- 被引次数: 0