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Distorted Waveform Balancing Using an Artificial Bee Colony (ABC) Based Optimal Control for Mitigating Total harmonics in Single Phase Inverter

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Circuits and Systems 2016年第9期7卷 2154-2167页

作者： N. M. Spencer Prathap Singh Kesavan Nair T. Ajith Bosco Raj Department of EEE CSI Institute of Technology Thovalai Tamilnadu India Department of ECE PSN College of Engineering and Technology Tirunelveli Tamilnadu India

The main objective of this paper is to reduce the total harmonics in a single phase voltage source inverter using Artificial Bee Colony (ABC) optimization technique for critical load applications. Single phase inverter is a non-linear load using power electronic components causing distortions in the load voltage and current wave patterns from the sinusoidal waveforms due to harmonics. The mapping state space model for a full bridge voltage source inverter was developed using output load resistance. An optimal ABC technique has been designed and optimized values are estimated using a full bridge voltage controlled inverter using Proportional Integral Algorithm. The MATLAB/SIMULINK tool and Experimental setup were implemented and their THD values were estimated. Also this ABC scheme is compared with the previous results such as PI Algorithm, Fuzzy logic controller and Neuro-fuzzy controllers. From the simulation and experimental results using ABC algorithm, it is observed that the total harmonics are mitigated considerably compared to previous results with respect to the power quality standards such as IEEE-519 and IEC 61000.

关键词： Voltage Source Inverter THD Proportional Integral Controller Artificial Bee Colony Voltage harmonics current harmonics

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Novel torque ripple minimization algorithm for direct torque control of induction motor drive

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Journal of Shanghai University(English Edition) 2009年第2期13卷 155-163页

作者：龙波郭桂芳郝晓红李晓宁 School of Mechatronics Engineering University of Electronics Science and Technology of ChinaChengdu 610054P.R.China School of Mechanical Engineering Xi'an Jiaotong UniversityXi'an 710049P.R.China

To elucidate the principles of notable torque and flux ripple during the steady state of the conventional direct torque control （DTC） of induction machines, the factors of influence torque variation are examined. A new torque ripple minimization algorithm is proposed. The novel method eradicated the torque ripple by imposing the required stator voltage vector in each control cycle. The M and T axial components of the stator voltage are accomplished by measuring the stator flux error and the expected incremental value of the torque at every sampling time. The maximum angle rotation allowed is obtained. Experimental results showed that the proposed method combined with the space vector pulse width modulation （SVPWM） could be implemented in most existing digital drive controllers, offering high performance in both steady and transient states of the induction drives at full speed range. The result of the present work implies that torque fluctuation could be eliminated by imposing proper stator voltage, and the proposed scheme could not only maintain constant switching frequency for the inverter, but also solve the heating problem and current harmonics in traditional induction motor drives.

关键词： torque ripple direct torque control (DTC) induction motor (IM) current harmonics

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Sensorless Monitoring of a Motor-Drive Machanical System Based on Adaptive Signal Decomposition

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International Journal of Plant Engineering and Management 2006年第1期11卷 1-7页

作者： MENG Qing-feng JIAO Li-cheng National Key Laboratory of Radar Signal Processing Xidian University Xi＇an 710071 P. R. China Institute of Lubrication Theory and Bearing Xi＇an jiaotong University Xi＇an 710049 P. R. China

A method for estimating current harmonics of an induction motor is introduced which is used for sensorless monitoring of a mechanical system driven by the motor. The method is based on an adaptive signal representation and is proposed to extract weak harmonics from a noisy current signal, especially in the presence of additive interference caused by transient modulation waves. As an application, a rotor unbalance experiment of rotating machinery driven by an induction motor is carried out, The result shows that the eccentricity harmonic magnitude of a current signal obtained by the method represents the rotor unbalance conditions sensitively. Vibration analysis is used to validate the proposed method.

关键词： sensorless monitoring current harmonics adaptive signal representation rotor unbalance

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Two-Step Non-Intrusive Load Monitoring Based on High-Frequency current Data

Two-Step Non-Intrusive Load Monitoring Based on High-Frequen...

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第三十九届中国控制会议

作者： Zhouye Du Gangfeng Yan College of Electrical Engineering Zhejiang University Huanan Industrial Technology Research Institute of Zhejiang University

Recent years, load monitoring technology has developed rapidly in China. Non-intrusive load monitoring can obtain electricity consumption data of users with low economic investment, thereby bringing benefits to power grid companies, users and other parties. This paper presents a two-step non-intrusive load monitoring algorithm based on high-frequency current data. current features are first extracted from the signal, then identified using a naive Bayes classifier. Although this algorithm requires a relatively large test set, its complexity is low. In addition, it only needs to collect high-frequency current data, and its accuracy is high.

关键词： Load monitoring high-frequency RMS current harmonics

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