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The electricity demand is increasing day by day. On the other side, fossil fuels are depleting at a higher rate. The abundantly available renewable energy sources like solar, wind, and fuel cells are becoming popular sources of energy. But due to the intermittent availability of these renewable energy sources, two or more energy sources are integrated together. Power electronic converters are used for integrating different energy sources. Various power electronic converter (PEC) topologies have been proposed and analyzed in detail to control maximum power point, voltage, frequency, and harmonic distortions. Each of these configurations will differ in its topology and operating principle. The objective of this paper is to present a comprehensive review of various aspects of PEC configurations available for integration of renewable energy sources by systematization into three groups (AC shunt coupled, DC shunt coupled, and hybrid coupled systems). Emphasis is also given to coordination power control, maximum power point, and grid integration challenges related to the hybrid energy system. Furthermore, a general, system modeling of solar, wind, and grid integration is presented here to give an overall picture of a hybrid renewable energy system.

We would like to present, with great pleasure that the aim of the 2nd Virtual Conference on Advances in Electric Drives, Process Control and Automation (VCADPCA2020) is a platform for researchers, academicians as well as professionals from all over the world to present, discuss and promote advances in knowledge, research and practice in the field of Electric Drives, Process Control and Automation. VCADPCA2020 is offering a fantastic opportunity to attend a global scientific forum from the convenience of your desktop. No travelling, no hotel expenses, no time away from the office. The conference runs fully online, from paper submission, including reviewing, conference discussion and post conference processing. All papers will be referred to double tier approval process, single-blind peer-review and regular check. The online conference is a smart and affordable manner of presenting research results. Three leading universities VIT, India, Aalborg University Fibigerstræde, Denmark and University West, Sweden are organized this conference successfully on 9th June 2020. Keynote sessions are presented virtually from National and International experts in cutting edge technologies. The selected papers are presented by the authors virtually in the emerging fields like smart grid, power electronics, renewable energy, industrial automation, control and robotics. The panel members evaluated the research ideas and recommended for paper publications in IOP conference proceedings. List of Editorial Board members are available in this pdf.

Inthis paper, a Linear Quadratic Regulator (LQR) based PI controller is proposedfor the integrator plus time delay process (IPTD). In LQR PI controller designprocess the selection of weight matrices ‘Q’ plays a key role in order tominimize settling time, peak overshoot and Integral Errors. So, In order toimprove the system performance, a new feedback gain matrix is proposed for theoptimal selection of weight matrices in the controller design. First,the LQR PI controller is designed for Firstorder time delay process (FOPDT) and thengrabbed the formulas for IPTD process by assuming the state variable as zero.The simulation results are presented to validate the proposed method by usingdifferent IPTD process. The proposed controller is also experimentallyvalidated on a temperature control process.

The novel results in the field of measurements of very small capacitance changes are presented. The operating principles like double differential principle, RC phase delay, charging and discharging, oscillator, capacitance to phase angle conversion used for measuring very small capacitance changes are discussed. The basic and most important parameters of measurements are dealt with measurement range, sensitivity, percentage error and applications where it can be used. The aim is to provide an elaborative summary on various methods and their parameters available for capacitance measurement.