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# IEE Proceedings - Electric Power Applications

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Displaying Results 1 - 13 of 13
• ### Mathematical model of gate-turn-off thyristor for use in circuit simulations

Publication Year: 1994, Page(s):284 - 292
Cited by:  Papers (5)
| | PDF (592 KB)

Owing to the lack of a detailed mathematical model for the gate-turn-off (GTO) thyristor, accurate simulation of power-electronic circuits involving GTO thyristors has not been feasible. The paper describes the theoretical development of an accurate analytical model of the GTO thyristor and the practical implementation of the model in industry-recognised circuit simulators. The GTO model is based ... View full abstract»

• ### Analysis of GTO-based static VAr compensators

Publication Year: 1994, Page(s):293 - 302
Cited by:  Papers (18)  |  Patents (2)
| | PDF (560 KB)

The growing availability of high-power gate turn-off thyristors (GTOs) has meant that power electronic convertor circuits can be manufactured with the ability to both absorb and generate reactive power. These circuits constitute the next generation of static VAr compensators (SVCs) which may eventually supersede the conventional thyristor-controlled reactors (TCRs) and thyristor-switched capacitor... View full abstract»

• ### Torque harmonics minimisation in permanent magnet synchronous motor with back EMF estimation

Publication Year: 1994, Page(s):323 - 330
Cited by:  Papers (16)  |  Patents (3)
| | PDF (460 KB)

A predictive current control in the synchronous reference frame with the back EMF estimation using the previous voltages and currents is presented. To reduce the torque harmonics produced by the air gap flux harmonics, the compensated d-axis and q-axis currents from the estimated back EMFs are employed. The effectiveness of the proposed control scheme is compared to the conventional one through si... View full abstract»

• ### Acoustic noise of electromagnetic origin in an ideal frequency-converter-driven induction motor

Publication Year: 1994, Page(s):341 - 346
Cited by:  Papers (13)
| | PDF (432 KB)

With the advent of power electronics, there has been increasing demand for variable-speed drives in industrial applications because significant energy savings can be achieved. However, the use of frequency converters in driving induction motors has resulted in significant increase in acoustic-noise radiation. While there have been numerous studies on the acoustic-noise-generation mechanisms in var... View full abstract»

• ### Parameter sensitivity of procedures for on-line adaptation of the rotor time constant of induction machines with field oriented control

Publication Year: 1994, Page(s):353 - 359
Cited by:  Papers (8)  |  Patents (2)
| | PDF (396 KB)

Procedures for on-line adaptation of the rotor time constant are often based on error models involving two or more machine parameters. A mismatch between the parameters in the model and in the machine has strong influence on the adaptation result and therefore on the quality of the field orientation. The parameter sensitivity of four simple adaptation methods is analysed theoretically and investig... View full abstract»

• ### Parameter identification of inverter drive system

Publication Year: 1994, Page(s):303 - 307
Cited by:  Papers (2)
| | PDF (296 KB)

The problem of an offline identification of the inverter drive system is presented. The least-squares method and the numerical optimisation method are analysed. Using experimental investigations, the effects of the conditions of supply and load on the inverter motor system are analysed. Changes in the values of identified parameters are approximated by polynomial functions View full abstract»

• ### New approach to current control of AC-to-DC voltage-type convertors

Publication Year: 1994, Page(s):275 - 283
Cited by:  Papers (1)
| | PDF (564 KB)

A new phase- and amplitude-based current control strategy for a PWM AC-to-DC voltage-type convertor is presented which introduces state feedback control of an LC filter. The feedback of the state variables of the LC filter connected to the AC side of the convertor not only compensates a DC component of the AC input current but also eliminates the oscillations of the DC output current and voltage w... View full abstract»

• ### Feasibility of using unsupervised learning, artificial neural networks for the condition monitoring of electrical machines

Publication Year: 1994, Page(s):317 - 322
Cited by:  Papers (21)
| | PDF (452 KB)

The feasibility of using an artificial network for identifying faults in induction motors has been demonstrated previously by the authors. In this work, the network was used as a learning and pattern recognition device, and was able to successfully associate input signal patterns with appropriate machine states. The neural network used was the multilayered perceptron (MLP), trained by a backpropag... View full abstract»

• ### Field-weakening performance of brushless synchronous AC motor drives

Publication Year: 1994, Page(s):331 - 340
Cited by:  Papers (242)  |  Patents (1)
| | PDF (716 KB)

The paper examines the theoretical and practical limitations to the field-weakening performance of surface permanent magnet, synchronous reluctance and interior permanent magnet motors when driven from an inverter with a limited volt-ampere rating. It is shown that the optimal' field-weakening performance consists of an infinite constant-power speed range but is limited to an inverter utilisation... View full abstract»

• ### Improvement of induction machine stability by modulation techniques

Publication Year: 1994, Page(s):347 - 352
Cited by:  Papers (1)
| | PDF (428 KB)

Instability can occur when an induction machine is supplied by a voltage source inverter-based PWM drive operating in an open loop' mode, particularly if the machine is lightly loaded. A form of space vector modulation is described in this paper that can be used to improve machine stability substantially. The modulation range of this technique is limited, however different methods of overcoming t... View full abstract»

• ### Design of an energy efficient motor for irrigation pumps operating under realistic conditions

Publication Year: 1994, Page(s):269 - 274
Cited by:  Papers (4)
| | PDF (396 KB)

The issues involved in the design of energy-efficient high-performance irrigation pump induction motors operating under typical field conditions are highlighted. Various factors deserving consideration, from the predesign survey to the final design stage, are discussed in detail. By resorting to optimisation techniques, suitable objective functions were evolved to arrive at an improved design, whi... View full abstract»

• ### Empirical thermal model for inverter-driven cage induction machines

Publication Year: 1994, Page(s):360 - 372
Cited by:  Papers (27)  |  Patents (1)
| | PDF (848 KB)

The paper describes an empirical thermal model which provides an estimate of stator- and rotor-conductor temperatures in an inverter-driven cage induction machine under both transient and steady-state conditions (of heating and cooling), and under constant and variable flux control. The model is based on a widely used thermal-torque derating for inverter-driven induction machines, and features a s... View full abstract»

• ### Effect of end core flux on the performance of the switched reluctance motor

Publication Year: 1994, Page(s):308 - 316
Cited by:  Papers (17)
| | PDF (620 KB)

The aim of the paper is to bridge the gap between two-dimensional and three-dimensional finite-element modelling of the switched reluctance motor. The flux linkage/current diagram and static torque profile of a four phase 8/6 machine are computed with the aid of two-dimensional and three-dimensional models. Comparison of the predicted values with measurements on the motor demonstrates the superior... View full abstract»

## Aims & Scope

Published from 1994-2006, IEE Proceedings - Electric Power Applications contained significant and original contributions on the applications of electric power. The scope covered a wide range of applications and apparatus in the power field. In addition to papers focussing on the design and development of electrical equipment, papers relying on analysis were also included.

Full Aims & Scope