12.功率因数校正技术

单击此处编辑母版标题样式,*,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,有源功率因数校正技术,1,单相有源功率因数校正,2,Why,THD=95.6%,PF=0.6,3,Why,4,How,无源功率因数校正,简单、成本低、可靠性高、EMI小；,尺寸重量大，校正效果与频率、负载和输入电压变化有关。,有源功率因数校正,功率因数接近1，THD小，输入电压和频率范围很宽，体积、重量小，输出电压恒定；,电路复杂，成本高，EMI高。,5,功率因数校正效果,6,无源功率因数校正,逐流电路,THD0.9,7,有源功率因数校正电路,任何一种DC-DC变换器都可以；,常用boost/buck/buck-boost;,按电感电流可,分为连续、临界和不连续模式,按控制方式可分为电流峰值、滞环、平均电流；电压型,8,三种不同模式的电流波形,不连续 临界 连续,9,三种电流型控制方式的电感电流波形,峰值,滞环,连续,10,三种电流型控制方式比较,11,Boost功率因数校正原理_1,12,Boost功率因数校正原理_2,13,UC3854A/B,平均电流、恒频、连续模式,14,UC3854校正原理,15,临界峰值电流模式,16,L6560/1/2,17,L6562的应用,18,不连续电压型功率因数校正,19,Flyback电路,20,EMI滤波器,21,三相有源功率因数校正,22,A. 拓扑结构,23,一、三个单相PFC电路组成的三相PFC电路,24,Three-phase ZVT PFC rectifier consisting of single-phase boost converters,25,Experimental Result,100kHz,90V-130Vrms input and 380V output,1.7kW,26,Three-phase ZVT PFC rectifier consisting of single-phase sepic converters,2001-12_3,27,Experimental Result,100kHz,200Vrms input and 28Vdc output,500kW,THD5% full load,28,Three-phase PFC rectifier consisting of single-phase converters,Advantage:,1.directly use single-phase PFC techniques,2.good performance in balanced conditions,Disadvantage:,1.interaction between stages,2.input current THD is around 10%,3.low power stage,29,Two-single-stage three-phase PFC circuit,30,Experimental result,120,Hz ripple cancelled,31,Experimental waveform,32,二、基于不控整流桥的三相PFC电路,33,2.1,boost-type three-phase PFC circuits,34,Single-switch DCM ZCT boost rectifier,94-00316324,35,Experimental Result,50kHz IGBT,170Vrms input and 600V output,4kW,THD=10%,95.2%,36,Single-switch DCM ZVT boost rectifier,94-00316324,37,Three-phase SVM boost rectifier,38,Matlab simulated waveform,39,Three-phase SVM boost rectifier-2,97-00618647,40,Simulation Waveform,41,Resonant boost three-phase PFC circuit,99-00799195,42,Experimental result,174kHz MOSFET,220Vrms input and 340V output,235W,97% efficiency,THD7.8%,43,Experimental waveform,44,three-phase Cuk PFC circuit,45,PSPICE Simulation Result,120V,L-L,60Hz input and 400V output,25kHz,2.9kW,THD 5%,PF=0.99,46,three-phase Sepic PFC circuit,47,ZVT three-level boost circuit,48,2.2,buck-type three-phase PFC circuits,49,Single-switch VF buck rectifier,50,PSPICE Simulation Result,415V input and 400V output,20kHz to 40kHz,2.5kW,95% estimated efficiency,51,Single-switch QR VF buck rectifier,电力系统自动化2000.2,52,PSPICE Simulation Result,380Vrms input and 220V output,5kW,90kHz,PF=0.993,THD5%,53,Three-phase multi-resonant ZVZCS PFC circuit,54,Experimental result,100Vrms input and 60V output,360W,56kHz,55,three-phase flyback-derived PFC circuit,00-00884291,56,Experimental result,42kHz,57,three-phase PFC Buck-Boost circuit,58,three-phase PFC Zeta circuit,59,ZVT single stage PFC circuit,97-00660230,60,Experimental result,208Vrms input and 48Vdc output,5kW,Output voltage ripple 500mVpp,40kHz IGBT,Efficiency 97% efficiency,67,Improved ZVT boost rectifier-,2,68,Experimental result,100kHz,100Vrms input and 120V output,97%,500W,69,Quasi-resonant Sepic PFC circuit,70,Experimental Result,35kHz,415Vrms input and 400V output,1kW,1200V IGBT,71,Experimental waveform,72,3.2,Basic buck-type rectifier,73,Four-quadrant isolated,three-phase ZVT rectifier,92-00254720,74,Experimental Result,91kHz 2kW,208Vrms input and 50V output,400V 25A MOSFET,THD about 0.9%,75,Experimental waveform,76,Quasi-single-stage isolated three-phase ZVZCS buck PWM rectifier,ZCS,ZVZCS,96-00548619,77,Experimental result,33.3kHz,305-407Vrms input and 40-57V output,6kW,THD5%,78,四、三相功率因数校正电路的冗余设计,79,Four-leg three-phase PFC circuit with fault tolerant capacity,80,B. 控制方法,81,一、SPWM方式,82,SPWM,方式,平均电流控制（average current control）,峰值电流控制（peak current control）,滞环电流控制（hysteresis current control）,间接电流控制（indirect current control）,电荷控制（charge control）,单周期控制（one-cycle control）,空间矢量控制（space vector control）,83,hysteresis current control,88-00009172,84,indirect current control,88-00009172,85,Charge control diagram,00-00822600,86,Charge control,87,One-cycle control diagram,95-00474965,88,One-cycle control,89,Space vector control,中国电机工程学报2000.6,90,Space vector control,91,二、变频控制方式,92,三、非线性控制方式,93,非线性控制,方式,模糊控制（fuzzy control）,神经网络控制（neural network control）,滑模变结构控制（slide mode control）,H,控制（ H,control）,94,Fuzzy control,98-00701948,95,neural network control,96-00548792,96,Slide mode control,93-00471992,97,H,control,98,