Harmonics cancellation using SVPWM shunt active power filter
Purpose - The paper aims to explain the investigation of the space vector modulation (SVPVM), in shunt active powers filters (APFs) field, for controlling the generated current. Design/methodology/approach - With the inclusion of the SVPWM control technique, the proposed topology of the two-level shunt active power filter (APF), based on IGBTs, besides its efficiency in harmonics cancellation and power factor correction, contributes in switching power losses reduction. Findings - The paper provides an extended theoretical study and a detailed explanation of the application of the SVPWM on shunt APFs, and demonstrates how power losses can be reduced by limiting the switching process to the two thirds of the pulse duty cycle. Research limitations/implications - Simulation and experimental validations will still be requested as to the accuracy of the model and the applicability to the polluted electrical power systems plants. Practical implications - The paper formulates an easy mathematical method to investigate the SVPWM algorithm with clarification of its various steps. It offers a benefit to people engaged in theoretical and practical research in APFs, inverters, and PWM modulation strategies. Originality/value - Since, there are few studies which clarify the application of the SVPWM on APFs, the paper may help to understand the mathematical implementation of this control strategy both for controlling the APF current and for gating signals generation.
harmonics modulators power measurement