Journal ArticleDOI
Analysis and realization of a pulsewidth modulator based on voltage space vectors
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TLDR
In this article, a space vector concept for deriving the switching times for pulsewidth-modulated voltage source inverters is compared with the conventional sinusoidal concept, which results in lower current harmonics and possibly a higher modulation index.Abstract:
A space vector concept for deriving the switching times for pulsewidth-modulated voltage source inverters is compared with the conventional sinusoidal concept. The switching times are deducted from assumptions for minimum current distortion, the resulting mean voltage values are shown, and the differences between these and the established sinusoidal PWM (pulse-width modulator) are elaborated. Based on an analytical calculation the current distortions and torque ripples are evaluated and compared with the values obtained with the conventional method. The space vector representation results in lower current harmonics and possibly a higher modulation index. A modulator based on an 8086 microprocessor has been implemented, and its performance is reported. >read more
Citations
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Journal ArticleDOI
Current control techniques for three-phase voltage-source PWM converters: a survey
TL;DR: Current control techniques for three-phase voltage-source pulsewidth modulated converters, including bang-bang (hysteresis, delta modulation) controllers and predictive controllers with on-line optimization are reviewed.
Book ChapterDOI
Fundamentals of Power Electronics
TL;DR: This chapter gives a description and overview of power Electronic technologies including a description of the fundamental systems that are the building blocks of power electronic systems.
Journal ArticleDOI
Relationship between space-vector modulation and three-phase carrier-based PWM: a comprehensive analysis [three-phase inverters]
Keliang Zhou,Danwei Wang +1 more
TL;DR: This paper comprehensively analyzes the relationship between space-vector modulation and three-phase carrier-based pulse width modulation and shows that all the drawn conclusions are independent of the load type.
Journal ArticleDOI
Direct torque control of induction machines using space vector modulation
TL;DR: In this paper, a direct induction machine torque control method based on predictive, deadbeat control of the torque and flux is presented, where the stator voltage required to cause the torque to be equal to their respective reference values is calculated.
Journal ArticleDOI
Direct active and reactive power control of DFIG for wind energy generation
Lie Xu,P. Cartwright +1 more
TL;DR: In this paper, a new direct power control (DPC) strategy for a doubly fed induction generator (DFIG)-based wind energy generation system is presented, which is based on the direct control of stator active and reactive power by selecting appropriate voltage vectors on the rotor side.
References
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Journal Article
Static Frequency Changers with "Subharmonic" Control in Conjunction with Reversible Variable-Speed A.C.Drives
Journal ArticleDOI
Design and Experimental Results of a Brushless AC Servo Drive
TL;DR: In this article, a typical control actuator system consisting of a brushless synchronous motor and a transistor chopper inverter is described, and several types of construction are described.
Journal ArticleDOI
Microprocessor control of PWM inverters
S.R. Bowes,M.J. Mount +1 more
TL;DR: A detailed comparative study of the various microprocessor-based methods of generating PWM control is presented, and the feasibility of using a microprocessor software-based calculation to generate PWM inverter control over a wide frequency range is demonstrated.
Journal ArticleDOI
Analytical analysis of the harmonic effects of a PWM AC drive
H. van der Broeck,H.-C. Skudelny +1 more
TL;DR: In this paper, the harmonic content of current, torque pulsations, and harmonic copper losses of a three-phase induction machine fed by a two-phase pulsewidth modulation (PWM) inverter were analyzed.
Journal ArticleDOI
A High-Performance Pulsewidth Modulator for an Inverter-Fed Drive System Using a Microcomputer
Bimal K. Bose,Hunt A. Sutherland +1 more
TL;DR: In this article, an Intel 8086 microcomputer-based pulsewidth modulator (PWM) is described which receives digital voltage and frequency commands independently at the input, generates precision three-phase PWM waves at the output, and can be used to drive a transistor or thyristor inverter for ac drive systems.