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IET Electric Power Applications

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Displaying Results 1 - 9 of 9
• Digital signal processor-based probabilistic fuzzy neural network control of in-wheel motor drive for light electric vehicle

Publication Year: 2012, Page(s):47 - 61
Cited by:  Papers (11)
| | PDF (1666 KB)

A digital signal processor (DSP)-based probabilistic fuzzy neural network (PFNN) control is proposed in this study to control an in-wheel motor drive using a six-phase permanent magnet synchronous motor (PMSM) for light electric vehicle (LEV). First, the dynamics of LEV and in-wheel motor drive system with lumped uncertainty are described in detail. Then, a feedback linearisation control is design... View full abstract»

• Sensorless micro-permanent magnet synchronous motor control system with a wide adjustable speed range

Publication Year: 2012, Page(s):62 - 72
Cited by:  Papers (1)
| | PDF (908 KB)

This study proposes a new sensorless speed control system for a micro-permanent magnet synchronous motor. Owing to the special characteristics of the micro-permanent magnet synchronous motor, a new rotor position estimator is proposed here. First, by detecting the three-phase zero-current crossing points, a low-resolution of the current position can be detected. Next, by using a Proportional Integ... View full abstract»

• Design of novel bearingless switched reluctance motor

Publication Year: 2012, Page(s):73 - 81
Cited by:  Papers (17)
| | PDF (1388 KB)

This study presents a novel bearingless switched reluctance motor (SRM) with decoupled torque and suspending stator poles. Different from the conventional bearingless SRM, the suspending poles of the proposed bearingless SRM are separated from the phase torque poles. Perpendicularly placed suspending poles are designed to produce a continuous radial force for rotor bearing. Owing to independently ... View full abstract»

• Prediction of the oil flow distribution in oil-immersed transformer windings by network modelling and computational fluid dynamics

Publication Year: 2012, Page(s):82 - 90
Cited by:  Papers (4)
| | PDF (890 KB)

In the context of thermal performance and thermal design, it is of significance to predict the magnitude and the location of the hot-spot temperature inside a power transformer. In an attempt to accurately predict this hot-spot in an oil-immersed transformer, various numerical modelling approaches have been developed for calculating the cooling oil flow distribution, which are generally categori... View full abstract»

• Magnetic arm-switch-based three-phase series-shunt compensated quality ac power supply

Publication Year: 2012, Page(s):91 - 100
Cited by:  Papers (3)
| | PDF (1393 KB)

This study presents a novel magnetic arm-switch-based integrated magnetic circuit for a three-phase series-shunt compensated uninterruptible power supply (UPS). The magnetic circuit acts as a common interacting field for a number of energy ports, viz., series inverter, shunt inverter, grid and load. The magnetic arm-switching technique ensures equivalent series or shunt connection between the inve... View full abstract»

• Voltage compensation-type inrush current limiter for reducing power transformer inrush current

Publication Year: 2012, Page(s):101 - 110
Cited by:  Papers (12)
| | PDF (969 KB)

When a transformer is initially energised, its iron core is driven into saturation, which will result in high-amplitude magnetising inrush current. For lessening this transient phenomenon, a voltage compensation-type inrush current limiter (VCT-ICL) is presented in this study. The VCT-ICL can automatically insert high impedance to restrain the sudden change in line current. After completing the re... View full abstract»

• Position sensorless control of switched reluctance motors based on improved neural network

Publication Year: 2012, Page(s):111 - 121
Cited by:  Papers (6)
| | PDF (1426 KB)

Neural network (NN) has been applied as rotor position estimator in switched reluctance motor (SRM) whose characteristic is highly non-linear. However, conventional two inputs back propagate (BP) NN based rotor position estimator is not appropriate for real-time application in high speed operations because of its considerable computational time consumption in its hidden layer. In this study, an im... View full abstract»

• Optimal reset control design for current control and uncertainties estimation in permanent magnet synchronous

Publication Year: 2012, Page(s):122 - 132
Cited by:  Papers (1)
| | PDF (854 KB)

An advanced joint optimal reset control (ORC) scheme based on linear principle is proposed for current controls and uncertainties estimations in permanent magnet synchronous motor (PMSM). The joint ORC consists of ORC current controllers and ORC uncertainty observers. It has been proved that the optimal reset law (ORL) of ORC can be obtained by solving algebraic Riccati equations. Based on the ORC... View full abstract»

• Parameter estimation for a deep-bar induction motor

Publication Year: 2012, Page(s):133 - 142
Cited by:  Papers (8)
| | PDF (922 KB)

A triple-cage circuit of a deep-bar induction motor is numerically identified in the time domain. The parameters are estimated either in the transient state or in the steady state by using a curve-fitting technique. The data used for estimation were obtained from finite-element analysis and measurements using a 37 kW induction motor. The accurate parameters allow the circuit model to well represen... View full abstract»

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