12.功率因数校正技术

null有源功率因数校正技术有源功率因数校正技术单相有源功率因数校正单相有源功率因数校正Why Why THD=95.6%,PF=0.6WhyWhyHowHow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。功率因数校正效果功率因数校正效果无源功率因数校正无源功率因数校正逐流电路THD<30%,PF>0.9有源功率因数校正电路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 三种不同模式的电流波形三种不同模式的电流波形不连续 临界 连续三种电流型控制方式的电感电流波形三种电流型控制方式的电感电流波形峰值滞环连续三种电流型控制方式比较三种电流型控制方式比较Boost功率因数校正原理_1Boost功率因数校正原理_1Boost功率因数校正原理_2Boost功率因数校正原理_2UC3854A/BUC3854A/B平均电流、恒频、连续模式UC3854校正原理UC3854校正原理临界峰值电流模式临界峰值电流模式L6560/1/2L6560/1/2L6562的应用L6562的应用不连续电压型功率因数校正不连续电压型功率因数校正Flyback电路Flyback电路EMI滤波器EMI滤波器三相有源功率因数校正三相有源功率因数校正A. 拓扑结构A. 拓扑结构一、三个单相PFC电路组成的 三相PFC电路一、三个单相PFC电路组成的 三相PFC电路Three-phase ZVT PFC rectifier consisting of single-phase boost convertersThree-phase ZVT PFC rectifier consisting of single-phase boost convertersExperimental ResultExperimental Result100kHz 90V-130Vrms input and 380V output 1.7kW Three-phase ZVT PFC rectifier consisting of single-phase sepic convertersThree-phase ZVT PFC rectifier consisting of single-phase sepic converters2001-12_3Experimental ResultExperimental Result100kHz 200Vrms input and 28Vdc output 500kW THD<5% full load Three-phase PFC rectifier consisting of single-phase convertersThree-phase PFC rectifier consisting of single-phase convertersAdvantage: 1.directly use single-phase PFC techniques 2.good performance in balanced conditionsDisadvantage: 1.interaction between stages 2.input current THD is around 10% 3.low power stage Two-single-stage three-phase PFC circuitTwo-single-stage three-phase PFC circuitExperimental resultExperimental result120Hz ripple cancelledExperimental waveformExperimental waveform二、基于不控整流桥的 三相PFC电路二、基于不控整流桥的 三相PFC电路2.1 boost-type three-phase PFC circuits2.1 boost-type three-phase PFC circuitsSingle-switch DCM ZCT boost rectifierSingle-switch DCM ZCT boost rectifier94-00316324Experimental ResultExperimental Result50kHz IGBT 170Vrms input and 600V output 4kW THD<=10% 95.2%  Single-switch DCM ZVT boost rectifierSingle-switch DCM ZVT boost rectifier94-00316324Three-phase SVM boost rectifierThree-phase SVM boost rectifierMatlab simulated waveformMatlab simulated waveformThree-phase SVM boost rectifier-2Three-phase SVM boost rectifier-297-00618647Simulation WaveformSimulation WaveformResonant boost three-phase PFC circuitResonant boost three-phase PFC circuit99-00799195Experimental resultExperimental result174kHz MOSFET 220Vrms input and 340V output 235W 97% efficiency THD<7.8%Experimental waveformExperimental waveformthree-phase Cuk PFC circuitthree-phase Cuk PFC circuitPSPICE Simulation ResultPSPICE Simulation Result120VL-L 60Hz input and 400V output 25kHz 2.9kW THD <5% PF=0.99three-phase Sepic PFC circuitthree-phase Sepic PFC circuitZVT three-level boost circuitZVT three-level boost circuit2.2 buck-type three-phase PFC circuits2.2 buck-type three-phase PFC circuitsSingle-switch VF buck rectifierSingle-switch VF buck rectifierPSPICE Simulation ResultPSPICE Simulation Result415V input and 400V output 20kHz to 40kHz 2.5kW 95% estimated efficiencySingle-switch QR VF buck rectifierSingle-switch QR VF buck rectifier电力系统自动化2000.2PSPICE Simulation ResultPSPICE Simulation Result380Vrms input and 220V output 5kW 90kHz PF=0.993 THD<5%Three-phase multi-resonant ZVZCS PFC circuitThree-phase multi-resonant ZVZCS PFC circuitExperimental resultExperimental result100Vrms input and 60V output 360W 56kHz three-phase flyback-derived PFC circuitthree-phase flyback-derived PFC circuit00-00884291Experimental resultExperimental result42kHz three-phase PFC Buck-Boost circuitthree-phase PFC Buck-Boost circuitthree-phase PFC Zeta circuitthree-phase PFC Zeta circuitZVT single stage PFC circuitZVT single stage PFC circuit97-00660230Experimental resultExperimental result208Vrms input and 48Vdc output 5kW Output voltage ripple 500mVpp 40kHz IGBT Efficiency <90%三、由开关器件组成可控整流桥的 三相PFC电路三、由开关器件组成可控整流桥的 三相PFC电路3.1 Basic boost-type rectifier3.1 Basic boost-type rectifierZVT boost rectifier-1ZVT boost rectifier-1Experimental resultExperimental result50kHz 180Vrms input and 350V output 97% at 5kW 10kWZVT boost rectifier-2ZVT boost rectifier-294-00349755Experimental resultExperimental result480Vrms input and 800V output 10kW 30kHz IGBT >97% efficiency Improved ZVT boost rectifier-2 Improved ZVT boost rectifier-2 Experimental resultExperimental result100kHz 100Vrms input and 120V output 97% 500WQuasi-resonant Sepic PFC circuitQuasi-resonant Sepic PFC circuitExperimental ResultExperimental Result35kHz 415Vrms input and 400V output 1kW 1200V IGBTExperimental waveformExperimental waveform3.2 Basic buck-type rectifier3.2 Basic buck-type rectifier Four-quadrant isolated three-phase ZVT rectifier Four-quadrant isolated three-phase ZVT rectifier92-00254720Experimental ResultExperimental Result91kHz 2kW 208Vrms input and 50V output 400V 25A MOSFET THD about 0.9% Experimental waveformExperimental waveformQuasi-single-stage isolated three-phase ZVZCS buck PWM rectifierQuasi-single-stage isolated three-phase ZVZCS buck PWM rectifierZCSZVZCS96-00548619Experimental resultExperimental result33.3kHz 305-407Vrms input and 40-57V output 6kW THD<5% 四、三相功率因数校正电路的冗余设计四、三相功率因数校正电路的冗余设计Four-leg three-phase PFC circuit with fault tolerant capacityFour-leg three-phase PFC circuit with fault tolerant capacityB. 控制方法B. 控制方法一、SPWM方式一、SPWM方式SPWM方式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）hysteresis current controlhysteresis current control88-00009172indirect current controlindirect current control88-00009172Charge control diagramCharge control diagram00-00822600Charge controlCharge controlOne-cycle control diagramOne-cycle control diagram95-00474965One-cycle controlOne-cycle controlSpace vector controlSpace vector control中国电机工程学报2000.6Space vector controlSpace vector control二、变频控制方式二、变频控制方式三、非线性控制方式三、非线性控制方式非线性控制方式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）Fuzzy controlFuzzy control98-00701948neural network controlneural network control96-00548792Slide mode controlSlide mode control93-00471992H∞ controlH∞ control