AC/DC单体电池充电机的研制
|
摘要
为了满足单体电池对充电机低压、大电流的要求,同时减少对电网的谐波污染,研制了一款AC/DC单体电池充电机。前级采用Boost APFC技术,实现宽电压输入、功率因数校正和母线稳压;后级采用LLC SR技术,解决二次侧整流二极管的损耗问题,实现电气隔离和降压。分析了级联变换器的工作原理,探讨了其设计方法。样机试验表明,整机功率因数、效率较高,且成本较低,验证了设计的可行性与有效性。
A single battery charger with AC/DC was designed to meet the performance requirements of low voltage and high current,and reduce the harmonic pollution to grid.The active power factor correction(APFC),the wide input voltage and the stable DC bus voltage are realized by the first stage on boost APFC technology.The loss problem of the secondary rectifier diode is resolved,and the electrical isolation and voltage step-down are realized by the second stage on LLC synchronous rectifier(SR) technology.The operation principle was analyzed and the parameters and design method were discussed based on the cascaded converter.A prototype test shows that the design has the performance of high power factor,high efficiency and low cost,and the feasibility and effectiveness of the design were verified.
A single battery charger with AC/DC was designed to meet the performance requirements of low voltage and high current,and reduce the harmonic pollution to grid.The active power factor correction(APFC),the wide input voltage and the stable DC bus voltage are realized by the first stage on boost APFC technology.The loss problem of the secondary rectifier diode is resolved,and the electrical isolation and voltage step-down are realized by the second stage on LLC synchronous rectifier(SR) technology.The operation principle was analyzed and the parameters and design method were discussed based on the cascaded converter.A prototype test shows that the design has the performance of high power factor,high efficiency and low cost,and the feasibility and effectiveness of the design were verified.
引文
[1] 李历波,康鸿飞,梁健,等.改变连接方式提高电池利用率创意方案[J].电源技术,2014,38(6):1118-1119.
[2] 曹亚非,姜华,胡凯,等,一种采用电池组并联供电的直流系统[J].电源技术,2016,40(2):358-360.
[3] 章江铭,龙江涛,刘天骥,等.Boost+变压器串/并联型LLC级联变换器研究[J].电力电子技术,2015,49(4):24-26.
[4] 刘文军,易俊宏,马红波.同步整流双谐振LLC-DCX悬浮控制电源研究[J].电机与控制学报,2017,21(6):18-25.
[5] 赵清林,刘会峰,袁精,等.基于移相补偿的全桥LLC谐振变换器交错并联技术[J].电工技术学报,2018,33(12):2777-2787.
[6] 洪良,杜建华,王均,等.非对称半桥LLC谐振变换器同步整流数字设计[J].电源学报,2018,16(4):113-119.
[7] 吕征宇,李佳晨,杨华.新型LLC谐振变换器数字同步整流驱动方式[J].电机与控制学报,2018,22(1):16-22.
[8] 尹强,任晓丹,熊泽成,等.基于MOSFET并联技术的电力通信电源研制[J].电器与能效管理技术,2015(9):36-39.
[9] 刘和平,李金龙,苗轶如,等.无传感器混合式LLC电路同步整流数字控制策略[J].电力自动化设备,2015,35(1):58-64.
[10] 李亚顺,杨海涛,徐德鸿,等.车载辅助DC/DC变换器设计[J].电源学报,2013,7(4):37-42.
[11] 范杰,姜岩峰.基于串联谐振和同步整流的高效节能电源设计[J].电力电子技术,2011,45(9):13-14.
[12] ZHAO C,XIE X,DONG H,et al.Improved synchronous rectifier driving strategy for primary-side regulated(PSR) flyback converter in light-load mode[J].IEEE Transactions on Power Electronics,2014,29(12):1321-1329.
[2] 曹亚非,姜华,胡凯,等,一种采用电池组并联供电的直流系统[J].电源技术,2016,40(2):358-360.
[3] 章江铭,龙江涛,刘天骥,等.Boost+变压器串/并联型LLC级联变换器研究[J].电力电子技术,2015,49(4):24-26.
[4] 刘文军,易俊宏,马红波.同步整流双谐振LLC-DCX悬浮控制电源研究[J].电机与控制学报,2017,21(6):18-25.
[5] 赵清林,刘会峰,袁精,等.基于移相补偿的全桥LLC谐振变换器交错并联技术[J].电工技术学报,2018,33(12):2777-2787.
[6] 洪良,杜建华,王均,等.非对称半桥LLC谐振变换器同步整流数字设计[J].电源学报,2018,16(4):113-119.
[7] 吕征宇,李佳晨,杨华.新型LLC谐振变换器数字同步整流驱动方式[J].电机与控制学报,2018,22(1):16-22.
[8] 尹强,任晓丹,熊泽成,等.基于MOSFET并联技术的电力通信电源研制[J].电器与能效管理技术,2015(9):36-39.
[9] 刘和平,李金龙,苗轶如,等.无传感器混合式LLC电路同步整流数字控制策略[J].电力自动化设备,2015,35(1):58-64.
[10] 李亚顺,杨海涛,徐德鸿,等.车载辅助DC/DC变换器设计[J].电源学报,2013,7(4):37-42.
[11] 范杰,姜岩峰.基于串联谐振和同步整流的高效节能电源设计[J].电力电子技术,2011,45(9):13-14.
[12] ZHAO C,XIE X,DONG H,et al.Improved synchronous rectifier driving strategy for primary-side regulated(PSR) flyback converter in light-load mode[J].IEEE Transactions on Power Electronics,2014,29(12):1321-1329.