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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
K. Vinoth Kumar
Karunya University
Control & Systems Engineering Electrical & Electronics Engineering

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Simulation Analysis of Ac/Dc Adapter Under Zero No-Load Power Consumption using Simulink Process Dona Maria Mathew; K. Vinoth Kumar; Nithin.T. Abraham; Vicky Jose
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 4, No 3: September 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

The burst-mode control is generally used to regulate the output voltage of the ac/dc adapter under light or no-load condition. Although the burst-mode control reduces the switching loss, the control-IC and the feedback circuit at the output side still consume a large amount of power. In order to further reduce the power consumption at no-load condition, a zero no-load power (ZNP) ac/dc adapter for electronic equipment with an embedded battery is proposed in this paper. When the proposed adapter is load connected, the operation is same as that of the conventional adapter. At no-load condition, the adapter is totally turned off. As a result the adapter can reduce the no-load power consumption to less than 1mW. Simulation of a 65 W adapter is presented in order to verify its validity.DOI: http://dx.doi.org/10.11591/ijpeds.v4i3.5669
SAR Algorithm Method in Photovoltaic System using MPPT Nithin T. Abraham; K. Vinoth Kumar; Vicky Jose; Dona Maria Mathew; S. Suresh Kumar
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 3, No 4: December 2013
Publisher : Institute of Advanced Engineering and Science

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Every solar energy harvester systems has got two sources of energy loss: the MPPT circuit and the dc–dc converter. To increase the efficiency of the PV energy harvester, the energy losses from the MPPT circuit and the dc–dc converter need to be minimized. Here a new MPPT algorithm called successive approximation register is introduced. This MPPT algorithm has got a power down mode and a fast tracking time, to achieve low power consumption and energy savings. With this MPPT algorithm energy losses from the MPPT circuit can be minimized and this technique can be greatly applicable to low power application systems mainly as well as for high power application.DOI: http://dx.doi.org/10.11591/ijpeds.v3i4.4556
Modelling and Simulation of Variable Frequency Synchronous DC-DC Buck Converter Jeya Selvan Renius; K. Vinoth Kumar; Arnold Fredderics; Raja Guru; Sree Lakshmi Nair
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 5, No 2: 2014
Publisher : Institute of Advanced Engineering and Science

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In this paper, novel small-signal averaged models for dc–dc converter operating at variable switching frequency are derived. This is achieved by separately considering the on-time and the off-time of the switching period. The derivation is shown in detail for a synchronous buck converter. The Enhanced Small Signal (ESSA) Model is derived for the synchronous buck converter. The equivalent series inductance (ESL) is also considered in this modelling. The buck converter model is also simulated in MATLAB and the result is also presented.DOI: http://dx.doi.org/10.11591/ijpeds.v5i2.6472
Analysis of Direct Torque Control of Industrial Drives using Zone-Shifting SVM Vicky Jose; K. Vinoth Kumar; S.Suresh Kumar; Nithin.T. Abraham; Dona Maria Mathew
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 4, No 3: September 2014
Publisher : Institute of Advanced Engineering and Science

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Direct Torque Control of Induction Motor has gained popularity in industrial applications mainly due to its simple control structure from its first introduction in 1986. Here the direct torque control (DTC) of induction motor with zone shifting space vector modulation (SVM) has been done. It uses a simple phase current re-construction algorithm for three phase induction motor (IM).The phase current re-construction algorithm is done by using information from the current that is from the phases between the inverter and the induction motor. The proposed algorithm is robust and very simple. It uses the AC current to get the stator current for estimating the motor flux and the electromagnetic torque. By evaluating through the torque value and the current the controlling of induction motor is done. The simulation results are also given which supports the direct torque control strategy of the induction motor (IM).DOI: http://dx.doi.org/10.11591/ijpeds.v4i3.5641
Soft Computing Module of High Step-Up DC–DC Converter for PV Module using Simulink Environment K. Vinoth Kumar; S.Suresh Kumar; S.Daison Stallon
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 3, No 1: March 2013
Publisher : Institute of Advanced Engineering and Science

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Within the photovoltaic (PV) power-generation market, the  PV module has shown obvious growth. However, a high voltage gain converter is essential for the module’s grid connection through a dc–ac inverter. This paper proposes a converter that employs a floating active switch to isolate energy from the PV panel when the ac module is OFF; this particular design protects installers and users from electrical hazards. Without extreme duty ratios and the numerous turns-ratios of a coupled inductor, this converter achieves a high step-up voltage-conversion ratio; the leakage inductor energy of the coupled inductor is efficiently recycled to the load. These features explain the module’s high-efficiency performance. The detailed operating principles and steady-state analyses of continuous, discontinuous, and boundary conduction modes are described. A 15V input voltage, 200V output voltage, and 100W output power prototype circuit of the proposed converter has been implemented; its maximum efficiency is up to 95.3% and full-load efficiency is 92.3%.DOI: http://dx.doi.org/10.11591/ijpeds.v3i1.1585
Co-Authors Arnold Fredderics Dona Maria Mathew Jeya Selvan Renius Nithin T. Abraham Nithin.T. Abraham Raja Guru S. Suresh Kumar S.Daison Stallon S.Suresh Kumar Sree Lakshmi Nair Vicky Jose