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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.


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.


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.


Kamalakannan C.,Rajalakshmi Engineering College | Kamaraj V.,SSN College of Engineering | Paramasivam S.,ESAB Engineering Services Ltd. | Paranjothi S.R.,Rajalakshmi Engineering College
2011 1st International Conference on Electrical Energy Systems, ICEES 2011 | Year: 2011

Switched reluctance machines have emerged as an important technology to be deployed in automotive electric drives; they represent a real alternative to conventional electrical machines in automotives. This paper reviews the technology status and trends in switched reluctance machines. It covers the various aspects of modeling, design, simulation, analysis, and control. Finally, it discusses the impact of switched reluctance machines technology on intelligent motion control. © 2011 IEEE.


Jeevananthan S.,Pondicherry Engineering College | Paramasivam S.,ESAB Engineering Services Ltd | Thamizharasan S.,Surya Group Institutions
International Journal of Power Electronics | Year: 2012

The number of switching per modulation cycle at each level in a multi-level inverter depends on the carrier frequency and the duration that the reference waveform dwells within the level. The variable carrier frequency band (VFCB) approach creates as many clusters as the number of carrier frequencies and consequent deterioration of the harmonic spectrum. Therefore, a new pulse width modulation (PWM) strategy, with the view to ensure that the power devices at all the levels are switched equal number of times, is proposed in this paper. It is designed such that the frequency of the carrier waves is allowed to remain constant for the chosen application while maintaining the number of switching for all devices is same. The MATLAB-based simulation response and its experimental validation are included to highlight the fact that there is a significant enhancement in harmonic power distribution besides contributing to reduce the switching losses and improve the efficiency. Copyright © 2012 Inderscience Enterprises Ltd.


Janakiraman R.,Anna University | Paramasivam S.,ESAB Engineering Services Ltd.
Proceedings - ICETEEEM 2012, International Conference on Emerging Trends in Electrical Engineering and Energy Management | Year: 2012

This paper deals with the topology of contra-rotating permanent magnet synchronous machine for the application of direct driven wind power generation (CRPMSMWPG). The existing single rotor wind power generators are capable of generating less power. In the proposed twin rotor contra-rotating wind power generators capable of generating twice the power of single rotor generator. The design has experimented at various wind speeds and its performance has evaluated. This renewable model and design werecompared with those of the existing model to promote green energy systems in the future. © 2012 IEEE.


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.


Thiruvenkadam M.,Anna University | Thangavel S.,k-Technology | Paramasivam S.,ESAB Engineering Services Ltd | Govarthanan R.,ESAB Engineering Services Ltd
International Journal of Applied Engineering Research | Year: 2015

Most of the industrial welding applications involving of electronic circuits such as AC-DC, and DC-AC and AC-DC converters. This paper assesses the different DC-DC power converter topologies suitable for micro butt welding focusing on resistance type of welding. The objective is to compare different types of DC-DC converter circuits and finally set criteria to select most suitable. They will be compared taking into account volume, weight, cost, easy to implement and functionality. As a result, it will be designated those that fit better for the application. To conclude, simulation of different power converter topologies and some experimental results on a half-bridge converter confirm the study and the selection procedure followed. © Research India Publications.


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.

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