Asymmetrical PWM for Harmonics Reduction and Power Factor Improvement in PWM AC Choppers Using Bee Colony Optimization

Sanjit, Panithi; Aurasopon, Apinan

doi:10.6113/jpe.2015.15.1.227

Cited by 12 publications

(6 citation statements)

References 13 publications

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“…2(c). This method has greater liberty to regulate the output voltage using optimization techniques [13] and in the present paper, it is adopted suitably for an 8-bit microcontroller.…”

Section: Pwm Topology and Control Methodsmentioning

confidence: 99%

“…Numerous algorithms and techniques have been proposed for the derivation of optimal switching angles of PWM patterns. Methods like genetic algorithms [9], [10] neural networks [11], particle swarm optimization [12], bee colony optimization [13] and their combinations [14] have been studied. A model of the proposed regulator is usually specified and the selected algorithm runs for a given set of output voltages, deriving the corresponding optimal switching angles with the purpose to achieve a given objective, usually the minimization of total harmonic distortion (THD) of the output current.…”

Section: Introductionmentioning

confidence: 99%

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Voltage control of single-phase induction motors using asymmetrical PWM and fuzzy logic

Zigirkas

Kalomiros

2016

2016 5th International Conference on Modern Circuits and Systems Technologies (MOCAST)

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A microcontroller-based AC voltage regulator for single-phase induction motors, using asymmetrical pulse width modulation (PWM) and fuzzy logic is proposed. The optimal switching angles are computed in real-time, using a nine-rule fuzzy system, with the objective to correct the phase difference between the output voltage and current. The voltage controller achieves an almost linear response and the motor speed is smoothly regulated within the full dynamic range of the control input. The proposed fuzzy switching regulator is verified both in simulation and with a circuit prototype. The performance of the asymmetrical PWM fuzzy controller is compared against other methods.

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“…2(c). This method has greater liberty to regulate the output voltage using optimization techniques [13] and in the present paper, it is adopted suitably for an 8-bit microcontroller.…”

Section: Pwm Topology and Control Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Voltage control of single-phase induction motors using asymmetrical PWM and fuzzy logic

Zigirkas

Kalomiros

2016

2016 5th International Conference on Modern Circuits and Systems Technologies (MOCAST)

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“…Phase shifting of the output voltage is achieved using asymmetrical pulse width modulation (APWM) as a control strategy. Performance comparison between conventional, symmetrical and asymmetrical PWM techniques is presented in [17]. However, phase shifting method decreases the control range of the chopper output voltage.…”

Section: Introductionmentioning

confidence: 99%

Power Factor Correction of Three-Phase PWM AC Chopper Fed Induction Motor Drive System Using HBCC Technique

et al. 2019

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In this paper, a new control strategy for an induction motor (IM) drive system fed from three-phase pulse width modulation (PWM) ac chopper is proposed. The main objective of the proposed control scheme is to achieve input power factor correction (PFC) of the IM drive system under different operating conditions. PFC is achieved by continuously forcing the actual three-phase supply currents with the corresponding reference currents, which are generated in phase with the supply voltages, using hysteresis band current control (HBCC) technique. The proposed control strategy has two loops: the inner loop and outer loop. The output of the outer loop is the magnitude of the supply reference current resulting from either speed controller or startup controller, whereas the output of the inner loop is PWM signals of the ac chopper. The proposed ac chopper features a smaller number of active semiconductor switches, four IGBTs, with only two PWM gate signals. As a result, the proposed system is simple, reliable, highly efficient, and cost effective. Mathematical analysis of the drive system is presented. Components of the input LC filter are designed using frequency response. The IM drive system is modeled using MATLAB/SIMULINK, and a laboratory prototype was built and tested. The simulation and experimental results confirm the validity and robustness of the proposed control strategy. INDEX TERMS Hysteresis band current control, induction motor drive, power factor correction, pulse width modulation, three-phase AC chopper.

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“…For example, [21] produces random pulse-position-switching commands by adopting varying rising/falling slopes of triangular wave to reduce the carrier harmonic and acoustic noise of a motor drive. The asymmetrical pulse gives an additional degree of freedom when selective harmonic elimination [22] or bee colony optimization [23] is used. All the asymmetrical PWMs in [21]- [23] focus on declining harmonics only.…”

Section: Introductionmentioning

confidence: 99%

“…The asymmetrical pulse gives an additional degree of freedom when selective harmonic elimination [22] or bee colony optimization [23] is used. All the asymmetrical PWMs in [21]- [23] focus on declining harmonics only.…”

Section: Introductionmentioning

confidence: 99%

Voltage Source Inverter Drive Using Error-compensated Pulse Width Modulation

Chen

Lin³

2016

Journal of Power Electronics

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An error-compensated pulse width modulator (ECPWM) is proposed to improve the baseband harmonic performance and the switching loss of voltage source inverters (VSIs). Selecting between harmonic distortion and switching loss is a design tradeoff in the conventional space vector pulse width modulation. In this work, an accumulated difference in produced and desired phase voltages is considered to adjust the reference signal. This mechanism can compensate for the voltage error in the previous carrier period. With error compensation every half-carrier period, the proposed ECPWM allows one-half reduction in carrier frequency without scarifying baseband harmonic distortion. The proposed modulator is applied to a three-phase VSI with R-L load and a motor-speed-control system for experiments. The measured efficiency and operating temperature of switches confirm the effectiveness of the proposed scheme.

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Asymmetrical PWM for Harmonics Reduction and Power Factor Improvement in PWM AC Choppers Using Bee Colony Optimization

Cited by 12 publications

References 13 publications

Voltage control of single-phase induction motors using asymmetrical PWM and fuzzy logic

Voltage control of single-phase induction motors using asymmetrical PWM and fuzzy logic

Power Factor Correction of Three-Phase PWM AC Chopper Fed Induction Motor Drive System Using HBCC Technique

Voltage Source Inverter Drive Using Error-compensated Pulse Width Modulation

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