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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Debashis Chatterjee
Jadavpur University
Control & Systems Engineering Electrical & Electronics Engineering

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A New strategy for on-line Droop adjustment for Microgrid connected DGs Sathyaprabakaran B; Subrata Paul; Debashis Chatterjee
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 9, No 1: March 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1131.366 KB) | DOI: 10.11591/ijpeds.v9.i1.pp139-149

Abstract

This paper proposes a simple and effective control technique for interconnection of DG resources to the power grid via interfacing converters based on Phase locked loop (PLL) and Droop control. The behaviour of a Microgrid (MG) system during the transition from islanded mode to grid-connected mode of operation has been studied. A dynamic phase shifted PLL technique is locally designed for generating phase reference of each inverter. The phase angle between filter capacitor voltage vector and d-axis is dynamically adjusted with the change in q-axis inverter current to generate the phase reference of each inverter. During fluctuations in load capacity, the grid-connected system must be able to supply balanced power from the utility grid side and micro-grid side. Therefore, droop control is implemented to maintain a balanced power sharing. The inverter operates in voltage control mode in order to control the filter capacitor voltage. An adjusted droop control method for equivalent load sharing of parallel connected Inverters, without any communication between individual inverters, has been presented. The control loops are tested with aid of MATLAB Simulink tool during several operating conditions.
Efficiency Optimized Brushless DC Motor Drive based on Input Current Harmonic Elimination Tridibesh Nag; Arijit Acharya; Debashis Chatterjee; Ashoke Kumar Ganguli; Arunava Chatterjee
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 6, No 4: December 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v6.i4.pp869-875

Abstract

This paper describes efficiency improvement of a position sensorless brushless DC (BLDC) motor with improved PWM scheme for the inverter compared to existing ones. This is based on Selective Harmonic Elimination (SHE). The proposed method reduces total harmonic distortion (THD) from the input current and armature flux and thereby reducing the core losses. The effectiveness of the proposed scheme is demonstrated through simulation and experimental results.
Co-Authors Arijit Acharya Arunava Chatterjee Ashoke Kumar Ganguli Sathyaprabakaran B Subrata Paul Tridibesh Nag