Power Research

Kagzi Raihan ¹, M. A. Mulla ¹

Affiliations
1 Dept. of Electrical Engineering, S. V. National Institute of Technology, Ichchhanath, Surat, Gujarat - 395007, IN

Abstract

Series Active Power Line Conditioner (SAPLC) is a custom power device which protects the sensitive loads against the voltage sags and swells. This paper presents three level diode clamped inverter with DC storage capacitors along with three single phase transformers as a SAPLC. Modifi ed scalar control strategy with fast response time is used to improve the performance of SAPLC. The simulation of the proposed model is carried out to verify the performance of SAPLC in conditions of balanced sag, balanced swell and unbalanced sag. Results are analyzed to check the effectiveness of the proposed model with selected control strategy.

Keywords

Scalar control, Power line conditioners, Three level diode clamped inverter, Voltage sags and Power quality.

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Vijay K. Patel ¹, M. A. Mulla ²

Affiliations
1 EED, N.G. Patel Polytechnic, Isroli, Afwa Post, Bardoli, Surat, Gujarat, IN
2 EED, Sardar Vallabhbhai National Institute of Technology, Surat-395007, Gujarat

Abstract

Shunt active power fi lter are commonly used as a harmonic and reactive power compensator. In this paper, a simple control method is described to control shunt active power fi lter. It operates on constant switching frequency, hence switching losses and stresses on the devices are lower. It can compensate the reactive power required by the load without sensing and computing the associated reactive power component, thus control circuit is made simple. It can also compensate harmonic components of the non-linear loads. The experimental results are agreed with the analytical and simulated results.

Keywords

Shunt active power fi lter, Harmonic and reactive power compensator, Simple control method, Donstant switching frequency, Power quality and Active power filter.

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