Kinnares, Vijit

Preferred name

Kinnares, Vijit

Alternative Name

Kinnares, V.

Main Affiliation

School of Engineering

vijit.ki@kmitl.ac.th

Now showing 1 - 10 of 138

Some of the metrics are blocked by your
consent settings
Power Quality Improvement of a Grid Connected Spilt-Phase Induction Generator using Tuned Harmonic Filters and Reactive Power Compensation
(2022-01-01)
Prapurt, Nuttapong
;
Kinnares, Vijit
This paper proposes power quality improvement of a 0.40 kW, 220V, 4.S0A, 4 pole grid connected split-phase induction generator using a capacitor for reactive power compensation in conjunction with the third and fifth tuned harmonic filters for mitigation of grid harmonic currents associated with the capacitor for reactive compensation. The design of the shunt passive filters is given. The obtained results can be guidelines for the design of a suitable induction generator system for efficient wind energy applications.
Some of the metrics are blocked by your
consent settings
Investigation of skew effect on the behavior and performance of grid connected induction generators
(2017-01-30)
Sawetsakulanond, B.
;
Kinnares, V.
This paper proposes the investigation of skew effect on the behavior and performance of three phase, 2.2 kW, 220/380 V, Δ / Y connected, 1420 rpm, 4 poles grid connected induction generators with skewed squirrel cage rotor for supplying electric power to utility grid. Skewed rotor with angle of 0°, 5° and 10° for grid connected induction generators are employed. Analysis and comparative study on operating of induction generators under transient and steady state conditions have been performed. Research results will be guidelines for an application of wind induction generator for electricity generation.
Some of the metrics are blocked by your
consent settings
Performance improvement of a slip energy recovery drive system by a voltage-controlled technique
(2010-10-01)
Tunyasrirut, Satean
;
Kinnares, Vijit
;
Ngamwiwit, Jongkol
This 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 your
consent settings
Control of a converter system for an asymmetrical parameter type two-phase induction motor drive operating in motoring and generating modes
(2018-02-17)
Sardyoung, Papol
;
Kinnares, Vijit
The control of a converter system is presented and discussed for an asymmetrical parameter type two-phase induction machine drive that is operating in motoring and generating modes. The proposed system consists of back-to-back voltage source converters. For a machine side, a three-leg voltage source converter provides both unbalanced and balanced two-phase output voltages with a scalar V/F control based on a carrier space vector pulse width modulation (SVPWM) technique. For a front end, a single-phase AC/DC doubled voltage converter with hysteresis current control is used to keep DC-link voltage constant, thus resulting in a bi-directional power flow operation for the motoring and generating modes. A closed-loop design for the DC-link voltage is fully given and also included is a review of carrier-based SVPWM for two-phase three-leg VSI. The proposed drive system was both simulated using MATLAB/SIMULINK and implemented on digital microcontrollers. The comparative performance evaluation of the whole system between balanced and unbalanced two-phase voltages for the machine is given. The simulation and experimental results show that the unbalanced phase voltage offers better performance for the whole system.
Some of the metrics are blocked by your
consent settings
Five-leg voltage source inverter for driving two single-phase induction motors
(2014-01-01)
Dangeam, Sirichai
;
Kinnares, Vijit
This paper presents the simulation of a five-leg voltage source inverter for driving independently two single-phase induction motors with different speeds. Carrier-based space vector pulse width modulation is used for the five-leg VSI. V/f scalar control is employed for those motors. The simulation results show that the speed for each motor can be independently control. Besides that, the advantages of the five-leg inverter are shared capacitor and dc bus together, reduced cost due to a decrease in power switch count and driver circuits and also switching losses.
Some of the metrics are blocked by your
consent settings
Design and construction of a three phase of self-exited induction generator
(2008-12-01)
Sawetsakulanond, B.
;
Hothongkham, P.
;
Kinnares, V.
This paper proposes the design and construction of three phase, 220/380 V, 3.4/2.0 A, δγ connected, 4 poles, 0.75 kW a self-exited induction generator (SEIG). Analysis of the designed SEIG uses a finite element method. The designed SEIG has been tested and compared with a standard SEIG under operating conditions such as no-load and on-load with pure resistive load. Consideration of capacitance for the SEIG based on equivalent circuit model under steady-state load conditions and a power flow diagram is given. Research results can be guidelines for development of effective wind induction generators for electricity generation. ©2008 IEEE.
Some of the metrics are blocked by your
consent settings
Two-phase three-leg voltage source converter fed asymmetrical parameter type two-phase induction machine operating in motoring and generating modes
(2013-01-01)
Sardyoung, Papol
;
Leeragreephol, Surachat
;
Kinnares, Vijit
This paper presents performance evaluation of an asymmetrical parameter type two-phase induction machine drive using two-phase three-leg voltage source converter (VSC) operating in motoring and generating modes. A system is simulated using MATLAB/SIMULINK. The proposed converter system includes a machine side converter using a three-leg VSC and a front end converter using a single-phase full bridge switched mode converter. The overall converter system is able to operate in a bidirectional power flow mode. For the front end converter, hysteresis band current control is utilized to maintain the DC link voltage constant. The machine side converter provides both unbalanced and balanced twophase output voltages for the machine based on a sinusoidal pulse-width modulation (SPWM) technique. The comparative performance evaluation of the whole system between balanced and unbalanced two-phase motor voltages is given.
Some of the metrics are blocked by your
consent settings
Performance comparison of an asymmetrical parameter type two-phase induction motor supplied with balanced and unbalanced phase voltages
(2010-07-30)
Piyarat, W.
;
Hothongkham, P.
;
Kinnares, V.
This paper presents a performance comparison of an asymmetrical parameter type two-phase induction motor supplied with balabced and unbalanced phase voltages using a three-leg voltage source inverter (VSI). Sinusoidal pulse width modulation(SPWM) method with constant V/F control is used for the two phase three leg inverter. Simulation and experimemtal results are used to evaluate the motor performance. It is found that the unbalanced applied voltage case offers the better motor perfoemance over the balanced applied voltage case in terms of torque ripple, speed holding capability and current trajectories, etc.
Some of the metrics are blocked by your
consent settings
Investigation into harmonic losses in a PWM multilevel cascaded H-bridge inverter fed induction motor
(2007-12-01)
Hothongkham, Prasopchok
;
Kinnares, Vijit
This paper presents harmonic loss considerations in a PWM multilevel cascaded H-bridge inverter fed induction motor. A non-sinusoidal waveform or voltage harmonic has influence on efficiency and performance of a drive system. Harmonic voltages depend upon PWM parameters such as modulation index, switching frequency, PWM schemes, and dc voltage levels etc. The comparison of additional losses between a conventional inverter drive and a multilevel cascaded H-Bridge inverter drive is evaluated through MATLAB/Simulink and experimental results. Harmonic loss evaluation under various PWM strategies such as sinusoidal pulse width modulation (SPWM), third harmonic injection pulse width modulation (THPWM) and space vector pulse width modulation (SVPWM) for multilevel cascaded inverters is given. PWM signals are generated by a dsPIC microprocessor. The harmonic loss calculation is based on frequency dependent loss functions. Moreover experimental results are also given. The results can be guidelines for designing multilevel inverters suitable for induction motor drives. © 2007 IEEE.
Some of the metrics are blocked by your
consent settings
Improvement of slip energy recovery drives with voltage source inverter for a speed control of wound rotor induction motors
(2007-12-01)
Tunyasrirut, Satean
;
Ngamwiwit, Jongkol
;
Kinnares, Vijit
;
Furuya, Tadayoshi
;
Yamamoto, Yoshiichi
This paper introduces the improvement of slip energy recovery drives with voltage source inverter for a speed control of wound rotor induction motors in order to reduce harmonics of input line current waveforms and improve its power factor. A boost chopper is used to connect the diode rectifier to DC link voltage, which is composed of a capacitor and voltage source inverter type space vector pulse width modulation (SVPWM). This scheme leads to be able to adjust the speed of the motor by the duty cycle of the chopper. The PI cascade controller is also introduced to control a speed to be constant when the load varies. An overview of the experimental test bench that the results are presented is three-fold. The first is the harmonics of input line current waveforms are reduced, the second power factor of the drive with VSI are improved and the third presented for a design PI controller for control a speed, where step change loading and unloading transients.

Kinnares, Vijit

Filters

Settings

Sort By

Results per page