Modelling and Optimal Design of a Shunt Active Power Filter

• Main Author: Lefawane, Mokgatla Abram
• Format: Final Year Project
• Language: English
• Published: Universiti Teknologi Petronas 2011
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://utpedia.utp.edu.my/7553/1/2011%20-%20Modelling%20and%20optimal%20design%20of%20shunt%20active%20power%20filter.pdf; http://utpedia.utp.edu.my/7553/

Power electronic converters are widely being used to mitigate harmonics in power systems. Active power filters have been proven to be effective in voltage and current harmonic compensations in the power systems. A shunt active power filter that uses low voltage components can be used in a medium or high voltage system to compensate for the distortions that affect power quality. This project investigates the optimal designs of a shunt active power filter and static compensator. The investigation is performed on the system with non-linear load and a bus network power system, respectively. The shunt active power filter provides the current harmonic compensation for a nonlinear load on a single bus network while static compensator provides voltage harmonic compensation to the load bus in a network. A p-q theory controller is implemented to compensate current harmonics. This is achieved by keeping the source current as a fundamental while injecting current to neutralise the load current harmonics. This injected current is equal in magnitude but phase shifted by 180° to the current harmonics. The simulated results of this project proved that a shunt active power is suitable for use in current harmonic compensation and static compensator is suitable for use in voltage harmonic compensation.