ACTIVEPOWERFILTERFORPOWERCOMPENSATION電力有源電力濾波器補(bǔ)償PPT學(xué)習(xí)教案

1、會(huì)計(jì)學(xué)1ACTIVEPOWERFILTERFORPOWERCOMPENSATION電力有源電力濾波器補(bǔ)電力有源電力濾波器補(bǔ)償償?shù)?頁(yè)/共20頁(yè)第2頁(yè)/共20頁(yè)第3頁(yè)/共20頁(yè)第4頁(yè)/共20頁(yè)Active Filter ConnectionLoad on AC SupplyAC Supply On LoadShuntCurrent Harmonic Filtering.Reactive current compensation.Current unbalance.Voltage FlickerSeriesCurrent Harmonic Filtering.Reactive current co

2、mpensation.Current unbalance.Voltage FlickerVoltage Unbalance Voltage Sag/Swell.Voltage Unbalance.Voltage Distortion.Voltage Interruption.Voltage Flicker and notching.第5頁(yè)/共20頁(yè)Fig. Block Diagram of APF第6頁(yè)/共20頁(yè)Fig. Compensation characteristics of a shunt active power filter 第7頁(yè)/共20頁(yè)Fig. Series active

3、power filter topology It compensate current system distortion caused by non-linear loads.The high impedance imposed by the series APF is created by generating a voltage of the same frequency that the current harmonic component that needs to be eliminated.Voltage unbalance is corrected by compensatin

4、g the fundamental frequency negative and zero sequence voltage components of the system.第8頁(yè)/共20頁(yè)Fig. Hybrid Active power filterBy controlling the amplitude of the voltage fundamental component across the coupling transformer, the PF of the power distribution system can be adjusted.The control of the

5、 load power factor imposed a higher voltage across the filter capacitor.This type of configuration is very convenient for compensation of high power medium voltage non linear loads第9頁(yè)/共20頁(yè) and are orthogonal coordinates.第10頁(yè)/共20頁(yè)第11頁(yè)/共20頁(yè)It must be used when the voltages are distorted or unbalanced

6、and sinusoidal currents are desired.In proposed method, instantaneous voltages are firs tconverted to - coordinates and then to stationary d-q coordinates. The produced d-q components of voltages are filtered and reverse converted - coordinates. These filtered - components of voltages are used in conventi