Rating optimization of three phase series hybrid power filter for power quality compensation and renewable energy integration

Abstract

Hybrid series active filters and shunt passive filter can significantly improve power quality and ensure a reliable voltage supply to the load through mitigating or eliminating issues such as voltage distortions, sags, swells, and unbalances. They can also compensate current problems related to linear and non-linear loads, such as load reactive power, current harmonics. In this thesis study, a 3-phase hybrid series power filter for power quality compensation is used for current harmonic, reactive power compensation, unbalance/sag/swell grid voltage compensation. A major research in this thesis concerns an approach to compensate simultaneously a reactive power by removing a TCR converter proposed in the paper published which has an impact on the reduction of the cost of the three phases series hybrid filter. Other research concerns the comparison of two approaches of the design of the passive filter to evaluate the impact on the series active filter rating. The hybrid series active filter (HSeAF) has gained in popularity as a highly efficient power electronics-based active power compensator. Without the active portion of the HSeAF, a shunt passive filter is unable to resolve voltage problems on its own as a dynamic voltage restorer. A conventional HSeAF 3-phase system comprises three series isolation transformers connected to a 3-phase converter sharing a common DC link bus. It is controlled as a variable voltage source similar to a shunt active power filter, the latter which is tuned for harmonic frequencies and installed to create an alternative path for load current harmonics. The existing literature focuses on using hybrid active power filters to compensate for load current issues only, due to the complexity and expense of the devices. The present research looks instead at optimizing available resources in order to enhance product efficiency and reduce overall costs. Also an approach provides smarter use of the shunt passive filter; along with a reduced series active filter rating and an overall reduction in cost. MATLAB simulations show that the 3-phase SHPF is able to simultaneously resolve voltage problems and load current issues.

Date	7 Jun 2018
Original language	American English
Awarding Institution	École de technologie supérieure
Supervisor	Kamal Al-Haddad (Supervisor) & Abdelhamid Hamadi (Co-supervisor)