Kinnares, Vijit
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Kinnares, Vijit
Alternative Name
Kinnares, V.
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vijit.ki@kmitl.ac.th
34 results
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Item type:Publication, Performance improvement of a slip energy recovery drive system by a voltage-controlled technique(2010-10-01); Ngamwiwit, JongkolThis paper introduces the performance improvement of a slip energy recovery drive system for the speed control of a wound rotor induction motor by a voltage-controlled technique. The slip energy occurred in the rotor circuit is transferred back to ac mains supply through a reactor instead of a step up transformer. The objective of the voltage-controlled technique is to increase power factor of the system and to reduce low order harmonics of the input line current. The drive system is designed and implemented using a voltage source inverter in conjunction with a boost chopper for DC link voltage, instead of a conventional drive using a 6 pulse converter or a Scherbius system. The slip power is recovered by the help of a voltage source inverter (VSI) based on a space vector pulse width modulation (SVPWM) technique. In order to keep the speed of the wound rotor induction motor constant over a certain range of operating conditions, the servo state feedback controller designed by a linear quadratic regulator (LQR) is also introduced in this paper. The overall control system is implemented on DSP, DS1104'TMS320F240 controller board. The performance improvement of the proposed system is tested in comparison with the conventional Scherbius system and the modified conventional Scherbius system by a 12 pulse converter in conjunction with a chopper at steady state and at dynamic conditions. A 220 W wound motor is employed for testing. It is found that the motor speed can be controlled to be constant in the operating range of 450-1200 rpm at no load and full load. It is also found that the efficiency of the proposed system is remarkably increased since the harmonics of the input ac line current is reduced while the ac line input power factor is increased. © 2010 Elsevier Ltd. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A New Modulation Strategy for Unbalanced Two Phase Induction Motor Drives Using a Three-Leg Voltage Source Inverter(2005-09-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Grid connected unsymmetrical two-phase induction generator system using time-based unbalanced space vector pwm and adaptive hysteresis band current control(2021-01-01); Sardyoung, PapolThis paper presents performance analysis of a single-phase grid conneted unsymmetrical two-phase induction generator. A voltage doubler bidirectional AC-DC converter for a grid side allowing regenerative operation is controlled by an adaptiptive band hysteresis current controller in order to improve power quality particulrly a reduction in current ripple. For a machine side, a two-phase three leg voltage source converter with timebased space vector PWM offers unbalanced orthogonal two-phase voltages for variable frequency excitation to enhance performance of the generator compared with balanced ones. Comparative performance analysis between time-based space vector PWM schemes for both balanced and unbalanced two-phase voltages using both simulation and experiment is demonstrated under various operating conditions. The simlation and experimental results are in good agreement. It is found that the unbalanced space vector PWM outperforms balanced one over a wide range of operation. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Modulating functions of space vector PWM for three-leg VSI-fed unbalanced two-phase induction motors(2009-02-10); Charumit, ChakrapongModulating functions or space-vector-equivalent references of a carrier-based unbalanced two-phase output space vector pulsewidth modulation (SVPWM) strategy applied to a three-leg voltage source inverter are proposed in this letter. These functions are derived from a conventional balanced two-phase SVPWM method. The proposed SVPWM method is implemented using a DS1104 dSPACE controller board. With the proposed method, the appropriate voltages for both windings of an asymmetrical-parameter-type two-phase induction motor can be achieved for improving the motor performance. Experimental and calculated results confirm the validity of the proposed method. © 2009 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A carrier-based unbalanced PWM method for four-leg voltage source inverter fed unsymmetrical two-phase induction motor(2013-01-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Performance Improvement of Vector Control Based Unsymmetrical Two-Phase Induction Generator with Optimum Voltage Compensation(2024-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Performance evaluation of three-leg voltage source inverter fed unsymmetrical two-phase induction motor based on genetic algorithm for parameter estimation(2019-12-01); This paper presents an evaluation method of performance characteristics in terms of loss, currents and electromagnetic torque of an unsymmetrical two-phase induction motor driven by a three-leg Voltage Source Inverter (VSI) providing unbalanced two-phase voltages. The model parameters for consideration of loss and dynamic performance of the motor are estimated by using Genetic Algorithm (GA). Also, synthesized winding current waveforms based on a super-position method and frequency domain of known harmonic voltages are investigated. The methodology of the proposed GA applied to parameter estimation of the unsymmetrical two-phase induction motor is fully given. Carrier-based unbalanced Space Vector Pulse With Modulation (SVPWM) is employed and implemented on a low-cost microcontroller. In order to prove the validity of the model with the parameters obtained by GA, performance comparison with the experiment and the model with the parameters obtained by conventional test in laboratory has been made. The results of simulation with the proposed parameters and experiment are in good agreement. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Implementation of a low-cost single-phase grid-connected photovoltaic system with active power filtering mechanism(2017-01-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Performance analysis of a modified three-phase induction motor with optimal capacitance fed by single-phase ac supply(2020-01-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Evaluation of PWM strategies based on practical findings and experimental facts for VSI-fed induction motors(1998-12-01); ; Potivejkul, S.This paper is concerned with the evaluation of PWM strategies based on practical findings and experimental facts for VSI fed induction motors. The measured harmonic loss factor curve for given conditions is used for the loss prediction. The comparison of harmonic losses for various PWM schemes has been made. As a result, the better understanding of PWM characteristics influencing harmonic machine losses is achieved. This will be useful for choosing the PWM schemes and parameters suitable for applications.