Digital control circuit for active power filter with modified instantaneous reactive power control algorithm

2003 ◽  
Author(s):  
K. Sozanski ◽  
R. Strzelecki ◽  
A. Kempski
Keyword(s):  
Power Control ◽  
Digital Control ◽  
Control Algorithm ◽  
Reactive Power ◽  
Active Power Filter ◽  
Active Power ◽  
Control Circuit ◽  
Reactive Power Control ◽  
Power Filter ◽  
Power Control Algorithm

scholarly journals Performance Enhancement in Active Power Filter (APF) by FPGA Implementation

2018 ◽  
Vol 8 (2) ◽  
pp. 689
Author(s):  
Shamala N ◽  
C. Lakshminarayana
Keyword(s):  
Power Distribution ◽  
Control Algorithm ◽  
Reactive Power ◽  
Performance Enhancement ◽  
Electrical Power ◽  
Active Power Filter ◽  
Active Power ◽  
Control Mechanisms ◽  
User Requirement ◽  
Power Filter

The generated electrical power in present days is not able to meet its end-user requirement as power demand is gradually increasing and expected to be increasing more in future days. In the power quality management, the parameters/factors like harmonic currents (HC) and reactive power (RP) yields the major issues in the power distribution units causing transformer heating, line losses, and machine vibration. To overcome these issues, several control mechanisms have been presented and implemented in recent past. The control algorithm based on synchronous reference frame (SRF) offers a better response by dividing the HC and RP. But the SRF based control algorithm requires better synchronization among the utility voltage and input current. To achieve this, the existing researches have used digital signal processing (DSP) and microcontroller, but these systems fail to provide better performance as they face issues like limited sampling time, less accuracy, and high computational complexity. Thus, to enhance the performance of active power filter (APF), we present an FPGA based approach. Also, to validate the performance of the proposed approach, we have used Xilinx 14.7 and Modelsim (6.3f) simulator and compared with other previous work. From the results analysis, it is found that the approach has good performance.

HYBRID ACTIVE POWER FILTER METHOD IN FREQUENCY DOMAIN FOR QUALITY IMPROVEMENT IN VARIABLE FREQUENCY DRIVE APPLICATIONS

2016 ◽  
Vol 78 (5-7) ◽  
Author(s):  
Minh Hoang Hac Le ◽  
Kim-Anh Nguyen ◽  
Viet Hung Ngo
Keyword(s):  
Power Electronics ◽  
Control Algorithm ◽  
Reactive Power ◽  
Active Power Filter ◽  
Active Power ◽  
Active Filter ◽  
Variable Frequency ◽  
Phase Variable ◽  
Passive Filter ◽  
Power Filter

We present in this paper a control method of a novel hybrid parallel active power filter (HPAPF) used for harmonic currents elimination and reactive power compensation in the power system for three-phase variable frequency drives (VFDs). The HPAPF configuration is built from two filter components including harmonics tuned passive filter and active power electronics filter. The active power electronics filter of the proposed HPAPF system is controlled by a novel control algorithm that makes use of Fourier analysis to facilitate accurate selective harmonics targeting allowing the cooperation between passive and active components. In the proposed topology, a coupling of the passive filter component and the active filter allows significant reduction in current rating of the active filter component.  This rating reduction scheme implies a great economic advantage of the proposed HPAPF compared to the methods which are based only on traditional pure active power electronics filters. The hardware design and the control algorithm of the proposed HPAPF are verified by MATLAB/Simulink software.

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