Results 251 to 260 of about 470,563 (307)

Robust AC drive control

1998
Abstract This chapter describes a simple gain scheduling robust controller whose parameters are continuously changed by fuzzy logic such that the controller makes the system respond quickly if the error e is large (SIN is large) and vice versa in order to obtain a robust controller which is insensitive to both plant noise and ...
Yasuhiko Dote, Richard G Hoft
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Advanced Techniques in Commercial AC Drives

IFAC Proceedings Volumes, 1992
Abstract AC drive is now widely applied in commercial adjustable speed drives as a completely established system. Due to the inherent advantages of ac drive, now it not only invades the territory of dc drive, but also creates many new applications which have hitherto never been considered.
T.H. CHIN, K. MATSUSE
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Single-phase input reduced switch count AC-AC drive systems

Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005., 2005
In this paper, two AC-AC reduced-switch-count drive systems for single- to three-phase applications are proposed. Both drive systems provide bidirectional power flow and power factor control. The operating principles of the topologies are presented, and a control strategy is proposed in order to reduce the DC-link voltage required by the converters ...
Cursino Brandao Jacobina, Euzeli Cipriano dos Santos, Mauricio Beltrao de Rossiter Correa, Edison Roberto Cabral da Silva   +3 more
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AC Drive Systems

1991
The speed of an AC motor depends on the speed of the rotating magnetic field, which is proportional to the frequency of the AC supply. Speed control is therefore possible with a power electronic controller which can generate a variable frequency. The majority of AC variable-speed drive systems use a DC/AC inverter to generate the required variable ...
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AC/DC/AC quasi-resonant transistor's converter for AC drive application

Proceedings of 1996 Canadian Conference on Electrical and Computer Engineering, 2002
This paper discusses the AC/DC/AC IGBT power converter system with a quasi-resonant circuit, which is a common commutation system for all transistors and which minimizes switching losses. The input AC/DC inverter is controlled to keep unity input power factor.
T. Citko, A. Sikorski, M. Dubowski, A. Skorek   +3 more
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DSP application in AC drives

2000 10th Mediterranean Electrotechnical Conference. Information Technology and Electrotechnology for the Mediterranean Countries. Proceedings. MeleCon 2000 (Cat. No.00CH37099), 2005
The analog control systems were a unique way for implementation in AC drives control for many years. The implementation of microprocessors in the AC drives control has begun in the speed and position loops. The slow speed (position) change allows implementation of 8 or 16 bit microprocessors.
S. Mircevski, Z. Andonov, S. Georgieski
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Application Considerations for AC Drives

IEEE Transactions on Industry Applications, 1983
General application considerations for ac variable-frequency drives are discussed. A review of induction motor characteristics and adjustable frequency controller fundamentals is presented as a background for applying the drives. In addition, a brief review of the types of controllers available is provided.
Dennis P. Connors, Dennis A. Jarc
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Vector controlled AC drives

Forty-First Annual Conference of Electrical Engineering Problems in the Rubber and Plastics Industries, 2003
The basic conceptual principles of operation of vector-controlled AC drives and field-oriented controllers are presented, and the direct and indirect implementations are briefly described. The key performance capability of torque control is emphasized, and mention is made of the difficulties in achieving the desired performance arising from feedback ...
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AC/DC/AC converter drives simulation using SIMNON

Proceedings of 1995 International Conference on Power Electronics and Drive Systems. PEDS 95, 2002
This paper describes the simulation approaches employed for an AC/DC/AC converter drive using SIMNON. SIMNON is a user-friendly tool for nonlinear dynamics simulation, in particular. One powerful feature is its ability of allowing integration of individual program modules after each individual module is programmed and tested independently.
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Dynamic flux controlled AC drive

IEE Proceedings B Electric Power Applications, 1990
A dynamic flux controlled drive for a cage induction motor uses a technique called in the paper ‘phase-decoupling’ to improve significantly the transient response of a scalar-controlled drive while retaining all the inherent advantages of the method. The strategy requires a versatile PWM modulator, but it is applicable to a wide variety of applications,
J.T. Boys, S.J. Walton
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