Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
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Item Real-time simulation of synchronous generator and its controllers on RTAI-Linux platform(2013) Latha, A.H.; Shubhanga, K.N.This paper presents a real-time simulation of a synchronous generator using real-time application interface (RTAI) on Linux. Different generator controllers such as exciter and power system stabilizer are also included in the real-time simulation. The Forward Euler method with a suitable step-size has been employed for obtaining the solution of differential equations after justifying its applicability through illustrative examples. Various disturbance conditions are demonstrated to bring out most of the rotor-angle stability issues in a SMIB system. Using a peripheral component interconnect (PCI) card, the real-time simulation results are captured on an oscilloscope and are validated using off-line MATLAB simulations. Such a setup offers a very useful laboratory tool for carrying out the hardware-in-the-loop tests. © 2013 IEEE.Item Implementation of a RTAI-Linux-based PLL and firing pulse generation for a laboratory TCSC(Institute of Electrical and Electronics Engineers Inc., 2014) Raju, R.; Shubhanga, K.N.This paper presents the implementation of a phase locked loop (PLL) using Real-Time Application Interface (RTAI) on Linux platform. This PLL has been employed to generate firing pulses for gating the thyristors of a thyristor controlled series capacitor (TCSC) developed in the laboratory. The working of the TCSC in the capacitive vernier mode is depicted through a set of oscilloscope plots. A detailed waveform analysis is also carried out to show the harmonic performance of the TCSC. © 2014 IEEE.Item Laboratory implementation of a thyristor controlled series capacitor(Institute of Electrical and Electronics Engineers Inc., 2015) Raju, R.; Shubhanga, K.N.In this paper, performance details of a thyristor controlled series capacitor (TCSC) implemented in a laboratory environment, are presented. The setup is not only simple, but also uses an open-source Linux-based real-time application interface (RTAI) software to realize a phase locked loop (PLL). With this PLL, the performance of the TCSC for the capacitor voltage and the line current reference signals, are compared. With the line current referencing, a non-ideal TCR inductor is found to offer a different fundamental TCSC reactance for a given firing angle command compared to the capacitor voltage referencing. Such a setup gives a better insight into TCSC operation and greatly augments the classroom studies. © 2015 IEEE.Item Effect of a non-ideal inductor on the performance of a laboratory TCSC and implementation of a current controller(Institute of Electrical and Electronics Engineers Inc., 2016) Raju, R.; Shubhanga, K.N.In this paper a procedure to estimate the effective resistance of a non-ideal inductor which is used to build a laboratory TCSC is presented. Having estimated the effective resistance, its influence on the performance of the TCSC is studied, not only through PSCAD/EMTDC-based simulation, but also by capturing the waveforms from the experimental setup. Further, a current controller is implemented on a real-time application interface (RTAI) platform, employing recursive Fourier-series-based current estimation technique. Case studies are presented to demonstrate the controller performance and its usefulness in augmenting the classroom teaching. © 2016 IEEE.