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Title: Non-linear Sliding mode Control with SRF based Method of UPQC for Power Quality Enhancement
Authors: Patjoshi, R K
Mahapatra, K K
Keywords: Nonlinear sliding surface;
Settling time;
Issue Date: Dec-2014
Publisher: IEEE
Citation: 9th IEEE International Conference on Industrial and Information Systems (ICIIS2014), 15-17 December 2014, Atal Bihari Vajpayee, Indian Institute of Information Technology and Management Gwalior, India
Abstract: This paper proposed a method of non-linear sliding(NLS) surface based control strategy for controlling the dc link voltage of unified power quality conditioner (UPQC) to compensate the current harmonics, sag/swell and voltage unbalance. The proposed non-linear sliding surface depends on controlling the DC-link capacitor voltage so that the damping ratio of the system changes from its initial low value to its final high value. The proposed algorithm allows the dc-link capacitor voltage of UPQC to obtained low overshoot and small settling time, hence better compensation can be achieved. This paper also proposed the Novel synchronous-reference frame (SRF) control technique for the reference current and voltage generation for both converters. Results have been validated using the real-time performance analysis in Opal-RT Lab. A comparison has been made with the conventional PI-controller and adequate results are considered for the verification.
Description: Copyright belongs to the proceeding publisher
Appears in Collections:Conference Papers

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