Entity

Time filter

Source Type


Janakiraman R.,Sri Ramanujar Engineering College | Paramasivam S.,ESAB Engineering Services Ltd.
Communications in Computer and Information Science | Year: 2013

The objective of the research work is to propose a Novel Method for Modeling, Simulation and Design analysis of a Self-Excited Induction Machine for Wind Power Generation (SEIMWPG). The earlier models of such generators are facing huge mechanical losses, due to wear and tear in the tightly coupled mechanical gear systems and could not provide maximum efficiency. In this paper, the self-excited induction machine based wind electric generator design has been presented, it is possible to get maximum power with the variation of the mutual inductance of the stator and rotor windings, irrespective of the variation of wind velocities. The complete system is modeled and simulated in the MATLAB / SIMULINK environment. © 2013 Springer-Verlag. Source


Pongiannan R.K.,RVS College of Engineering and Technology | Paramasivam S.,ESAB Engineering Services Ltd. | Yadaiah N.,Jawaharlal Nehru Technological University
IEEE Transactions on Power Electronics | Year: 2011

This paper presents the design and development of dynamic partially reconfigurable pulsewidth modulation (DPRPWM) controller for three-phase voltage-source inverters (VSI) in a single Xilinx Spartan 3 XCS400PQ208 field programmable gate array (FPGA). The DPRPWM controller is designed such that it switches between the popular PWM techniques like sinusoidal PWM (SPWM) and space vector PWM (SVPWM). The FPGA platform supports the run-time reconfiguration of control functions and algorithms directly in hardware and meets hard real-time performance criteria in terms of timings for PWM generation as well as reconfiguration. The DPRPWM control is simulated and experimentally verified using a low-cost Xilinx Spartan FPGA. The results of SPWM and SVPWM controller are presented and the results prove that the DPRPWM controller for three-phase inverter is highly possible and can be extended to any level/phase PWM controllers. © 2010 IEEE. Source


Thandapani T.,RRT Electro Powwer P Ltd. | Karpagam R.,Easwari Engineering College | Paramasivam S.,ESAB Engineering Services Ltd.
International Journal of Power Electronics | Year: 2015

VIENNA rectifier is a three-phase three-level boost converter used for active power factor correction (APFC) applications. It utilises an AC switching element in combination with diodes and capacitor to realise it. Three variants of this converter can be arrived at depending on how the AC switching element is realised. This results in variation in efficiency and rating of the components used for a specified power, input voltage, and switching frequency. In this paper all the three variants are simulated, compared, and benchmarked for a 10 kW converter operating on a line voltage of 400 V AC. Design calculations for all the three topologies are provided. Current and voltage rating of various components are calculated. Power dissipated by each and every component is calculated and efficiency between the topologies is compared at switching frequency (fS) of 50 kHz. The efficiency at different switching frequencies for each topology is calculated and plotted. © 2015 Inderscience Enterprises Ltd. Source


Thangavelu T.,RRT Electro Power Pvt Ltd | Shanmugam P.,ESAB Engineering Services Ltd. | Raj K.,Easwari Engineering College
IET Power Electronics | Year: 2015

Input harmonic and power factor (PF) regulations necessitate the use of front end active PF correction (APFC) circuit for power electronic converters. In recent times, the VIENNA rectifier has become a popular choice for three-phase APFC applications. The converter is a fifth-order system and results in a highly complex model. This calls for a complex control design procedure and involves enormous computation requiring the use of a high end digital signal processor (DSP). This can be simplified if the order of system is reduced. In this study, it is proposed to decouple and analyse the converter as three independent single phase units operating in parallel with current mode control, thereby reducing the order to two, simplifying the analysis and control design. The transfer function of the proposed small-signal model is derived and its Bode plot is drawn. A high bandwidth inner average current controller and a low bandwidth outer voltage controller are designed to obtain a 60° phase margin. With the proposed design, a 10 kW prototype VIENNA rectifier is developed with a low cost analogue integrated circuit (IC) and validated. The results obtained prove the accuracy of the proposed model and effectiveness of the control. Single phase operation is also made feasible with the proposed technique. © The Institution of Engineering and Technology 2015. Source


Kannan C.K.,Rajalakshmi Engineering College | Tamilarasan R.,Rajalakshmi Engineering College | Paranjothi S.R.,Rajalakshmi Engineering College | Kamaraj V.,SSN College of Engineering | Paramasivam S.,ESAB Engineering Services Ltd.
Australian Journal of Electrical and Electronics Engineering | Year: 2013

This paper presents a real time verification of an artificial neural network system with the field programmable analogue array (FPAA) control for the sensorless control of switched reluctance motor (SRM) in automotive drives. The rotor position estimation is done using the unsaturated instantaneous flux linkages and the current obtained by measuring the phase current and voltage. The converter analogue control is achieved with FPAA. The SRM automotive applications are currently getting special attention as the SRM has notable advantages such as robustness, low manufacturing cost and good size-to-power ratio. The experimental results for a 400 W 8/6-SRM prototype model are presented and compared with 500 W soft magnetic composite cored SRM. © Institution of Engineers Australia 2013. Source

Discover hidden collaborations