全输入电压范围高功率因数脉冲序列控制DCM Boost PFC变换器
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摘要
定占空比控制DCM Boost PFC变换器的开关管导通占空比固定,存在输入电流畸变,导致输入功率因数较低。为实现DCM Boost PFC变换器的单位功率因数,需要根据输入电压与输出电压调整占空比,由于运算复杂,低成本的数字控制难以实现。提出了一种DCM Boost PFC变换器的脉冲序列(pulse train,PT)控制方法,以离散化的方式拟合变占空比函数,运算量小,适用于采用低成本的数字控制芯片。实验结果表明,PT控制DCM Boost PFC变换器具有比定占空比控制DCM Boost PFC变换器更高的PF和更低的输出电压纹波。
Constant duty cycle controlled discontinuous conduction mode(DCM) Boost power factor correction(PFC)converter suffers from low power factor over wide input voltage range, especially when input voltage is high, power factor will decrease. In order to achieve unit power factor(PF),the duty cycle should be varied according to input voltage and output voltage, which is difficult for low cost digital controller because of complex operation. A digital pulse train(PT) control technique for power factor correction was proposed, PF close to 1 can be achieved over whole input voltage range. The operation principle of PT controlled DCM Boost PFC converter was analyzed. The experiments results show that the PF and output voltage ripple of PT controlled DCM Boost PFC converter are better than these of constant duty cycle controlled DCM Boost PFC converter.
Constant duty cycle controlled discontinuous conduction mode(DCM) Boost power factor correction(PFC)converter suffers from low power factor over wide input voltage range, especially when input voltage is high, power factor will decrease. In order to achieve unit power factor(PF),the duty cycle should be varied according to input voltage and output voltage, which is difficult for low cost digital controller because of complex operation. A digital pulse train(PT) control technique for power factor correction was proposed, PF close to 1 can be achieved over whole input voltage range. The operation principle of PT controlled DCM Boost PFC converter was analyzed. The experiments results show that the PF and output voltage ripple of PT controlled DCM Boost PFC converter are better than these of constant duty cycle controlled DCM Boost PFC converter.
引文
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[16]Sha Jin,Xu Duo,Chen Yiming,et al.Apeak-capacitor-current pulse-train-controlled buck converter with fast transient response and a wide load range[J].IEEE Transactions on Industrial Electronics,2016,63(3):1528-1538.
[17]Qin Ming,Xu Jianping.Multiduty ratio modulation technique for switching DC-DC converters operating in discontinuous conduction mode[J].IEEE Transactions on Industrial Electronics,2010,57(10):3497-3507.
[18]王金平,许建平,秦明,等.开关DC-DC变换器双频率脉冲序列调制技术[J].中国电机工程学报,2010,30(33):1-8.Wang Jinping,Xu Jianping,Qin Ming,et al.Bi-frequency pulse train modulation technique for switching DC-DCconverters[J].Proceedings of the CSEE,2010,30(33):1-8(in Chinese).
[19]Sha Jin,Xu Jianping,Zhong Shu,et al.Control pulse combination-based analysis of pulse train controlled DCMswitching DC-DC converters[J].IEEE Transactions on Industrial Electronics,2015,62(1):246-255.
[20]Qin Ming,Xu Jianping.Improved pulse regulation control technique for switching DC-DC converters operating in DCM[J].IEEE Transactions on Industrial Electronics,2013,60(5):1819-1830.
[2]韩蒙,吴虹飞,邢岩.基于隔离升降压变换器的单级软开关功率因数校正变换器[J].中国电机工程学报,2017,37(8):2361-2369.Han Meng,Wu Hongfei,Xing Yan.A single-stage soft-switching power factor correction converter based on an isolated buck-boost converter[J].Proceedings of the CSEE,2017,37(8):2361-2369(in Chinese).
[3]阎铁生,许建平,张斐,等.变导通时间控制临界连续模式反激PFC变换器[J].中国电机工程学报,2013,33(27):60-68.Yan Tiesheng,Xu Jianping,Zhang Fei,et al.Variable on-time controlled critical conduction mode flyback PFCconverters[J].Proceedings of the CSEE,2013,33(27):60-68(in Chinese).
[4]杨平,许建平,董政,等.低输入电感电流纹波二次型Boost PFC变换器[J].中国电机工程学报,2013,33(12):32-38.Yang Ping,Xu Jianping,Dong Zheng,et al.Quadratic boost power factor correction converters with small input inductor current ripple[J].Proceedings of the CSEE,2013,33(12):32-38(in Chinese).
[5]Chen Zhengge,Yang Ping,Zhou Guohua,et al.Variable duty cycle control for quadratic boost PFC converter[J].IEEE Transactions on Industrial Electronics,2016,63(7):4322-4232.
[6]Zhao Chengdong,Zhang Junming,Wu Xinke.An improved variable on-time control strategy for a CRMflyback PFC converter[J].IEEE Transactions on Power Electronics,2017,32(2):915-919.
[7]Kim J S,Lee S H,Cha W J,et al.High-efficiency bridgeless three-level power factor correction rectifier[J].IEEE Transactions on Industrial Electronics,2017,64(2):1130-1136.
[8]Taniguchi K,Nakaya Y.Analysis and improvement of input current waveforms for discontinuous-mode boost converter with unity power factor[C]//Proceedings of Power Conversion Conference.Nagaoka,Japan:IEEE,1997.
[9]姚凯,唐伟杰,毕晓鹏,等.Boost PFC变换器直流母线电容等效串联电阻和容值的一种在线监测方法[J].中国电机工程学报,2017,37(9):2677-2685.Yao Kai,Tang Weijie,Bi Xiaopeng,et al.An online monitoring method of DC-link capacitor’s ESR and C for Boost PFC converters[J].Proceedings of the CSEE,2017,37(9):2677-2685(in Chinese).
[10]Ye Z Z,Jovanovi?M M.Implementation and performance evaluation of DSP-based control for constant-frequency discontinuous-conduction-mode Boost PFC front end[J].IEEE Transactions on Industrial Electronics,2005,52(1):98-107.
[11]Yao Kai,Ruan Xinbo,Mao Xiaojing,et al.Reducing storage capacitor of a DCM Boost PFC converter[J].IEEETransactions on Power Electronics,2012,27(1):151-160.
[12]Yao Kai,Ruan Xinbo,Mao Xiaojing,et al.Variable-duty-cycle control to achieve high input power factor for DCM Boost PFC converter[J].IEEETransactions on Industrial Electronics,2011,58(5):1856-1865.
[13]Gu Linlin,Ruan Xinbo,Xu Ming,et al.Means of eliminating electrolytic capacitor in AC/DC power supplies for LED lightings[J].IEEE Transactions on Power Electronics,2009,24(5):1399-1408.
[14]Yao Kai,Hu Xincheng,Li Qiang,et al.A novel control to achieve optimal reduction of the E-cap’s ripple current for discontinuous-conduction mode boost PFCconverter[J].IEEE Transactions on Power Electronics,2016,31(6):4331-4342.
[15]Huber L,Irving B T,Jovanovi?M M.Effect of valley switching and switching-frequency limitation on line-current distortions of DCM/CCM boundary boost PFC converters[J].IEEE Transactions on Power Electronics,2009,24(2):339-347.
[16]Sha Jin,Xu Duo,Chen Yiming,et al.Apeak-capacitor-current pulse-train-controlled buck converter with fast transient response and a wide load range[J].IEEE Transactions on Industrial Electronics,2016,63(3):1528-1538.
[17]Qin Ming,Xu Jianping.Multiduty ratio modulation technique for switching DC-DC converters operating in discontinuous conduction mode[J].IEEE Transactions on Industrial Electronics,2010,57(10):3497-3507.
[18]王金平,许建平,秦明,等.开关DC-DC变换器双频率脉冲序列调制技术[J].中国电机工程学报,2010,30(33):1-8.Wang Jinping,Xu Jianping,Qin Ming,et al.Bi-frequency pulse train modulation technique for switching DC-DCconverters[J].Proceedings of the CSEE,2010,30(33):1-8(in Chinese).
[19]Sha Jin,Xu Jianping,Zhong Shu,et al.Control pulse combination-based analysis of pulse train controlled DCMswitching DC-DC converters[J].IEEE Transactions on Industrial Electronics,2015,62(1):246-255.
[20]Qin Ming,Xu Jianping.Improved pulse regulation control technique for switching DC-DC converters operating in DCM[J].IEEE Transactions on Industrial Electronics,2013,60(5):1819-1830.
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