# IET Power Electronics

## Filter Results

Displaying Results 1 - 14 of 14
• ### Evaluation of insulated gate bipolar transistor protection with ZnO thick films varistors

Publication Year: 2010, Page(s):1 - 10
Cited by:  Papers (1)
| | PDF (716 KB)

To have efficient protection of insulated gate bipolar transistor (IGBT) against various electrical voltage overshoots, screen-printed zinc oxide (ZnO) varistors have been developed using a planar structure. These varistors exhibit a breakdown voltage higher than 600 V and a non-linear coefficient up to 40. Some samples have been tested in real operations conditions to protect 1200 V IGBT in the c... View full abstract»

• ### Effect of supply voltage asymmetry on IRP p-q-based switching compensator control

Publication Year: 2010, Page(s):11 - 17
Cited by:  Papers (6)
| | PDF (217 KB)

Results of a study on how the supply voltage asymmetry affects the reference signal for switching compensator control, in a situation when this signal is generated using the instantaneous reactive power (IRP) p-q theory are presented. According to the IRP p-q approach, the compensator should compensate IRP and the alternating component of the instantaneous active power of the load. However, that i... View full abstract»

• ### High efficiency asymmetrical half-bridge flyback converter using a new voltage-driven synchronous rectifier

Publication Year: 2010, Page(s):18 - 32
Cited by:  Papers (11)
| | PDF (1690 KB)

This study presents a high efficiency asymmetrical half-bridge flyback converter using a new voltage-driven synchronous rectifier that operates over a universal input voltage range (75-265-V) with a fixed 5-V DC output voltage. Both power semiconductor switches of the proposed converter primary operate asymmetrically under zero voltage switching to achieve high efficiency and low switch voltage st... View full abstract»

• ### Novel true zero current turn-on and turn-off converter family: analysis and experimental results

Publication Year: 2010, Page(s):33 - 42
Cited by:  Papers (9)
| | PDF (957 KB)

A novel soft-commutation cell capable of providing zero current switching (ZCS) operation keeping the main switch current equal to the load current is presented. Substituting the typical pulse width modulation cell found in classic power converter structures by the presented ZCS cell and taking to account the invariance principle, a new ZCS converter family could be achieved and it is also present... View full abstract»

• ### Limits of predictive current-ripple suppression in switching power-supply ICs

Publication Year: 2010, Page(s):43 - 53
Cited by:  Papers (2)
| | PDF (647 KB)

Large inductance requirements (for accuracy) in switching power supplies for portable applications impede system-on-chip (SoC) integration and therefore form-factor reduction because on-chip inductances are invariably low and off-chip inductors intolerably obtrusive. Cancelling the current ripple of innately small on-chip inductors, however, keeps the effective output current ripple and its result... View full abstract»

• ### Design and application of a hybrid active power filter with injection circuit

Publication Year: 2010, Page(s):54 - 64
Cited by:  Papers (17)
| | PDF (691 KB)

In this study, a novel hybrid active power filter (HAPF) with injection circuit is proposed. It shows great promise in reducing harmonics and improving the power factor with a relatively low-capacity active power filter (APF). As a project in a copper-foil factory in eastern China, the parameters design method of HAPF with injection circuit is put forward here. A multi-objective genetic algorithm ... View full abstract»

• ### Frequency reduction schemes for back-to-back connected, diode-clamped multilevel converters

Publication Year: 2010, Page(s):65 - 74
Cited by:  Papers (2)
| | PDF (753 KB)

Two new switching schemes for back-to-back connected diode-clamped multilevel converters that reduce the devices switching frequency while maintaining capacitor balancing are presented. Comparisons are made between a previously reported optimal balancing strategy and the two proposed switching techniques using data gathered from a prototype five-level, back-to-back connected, diode-clamped multi... View full abstract»

• ### LMI robust control design for boost PWM converters

Publication Year: 2010, Page(s):75 - 85
Cited by:  Papers (41)
| | PDF (539 KB)

This work presents an analytical study and an experimental verification of a robust control design based on a linear matrix inequalities (LMI) framework for boost regulators. With the proposed LMI method, non-linearities and uncertainties are modelled as a convex polytope. Thus, the LMI constraints permit to robustly guarantee a certain perturbation rejection level and a region of pole location. W... View full abstract»

• ### Hamel locus design of self-oscillating DC-DC resonant converters

Publication Year: 2010, Page(s):86 - 94
Cited by:  Papers (7)
| | PDF (750 KB)

The study presents a technique for analysing and controlling resonant DC-DC converters in a self-oscillating manner. Self-oscillating converters benefit from higher efficiency and higher power density than their non-self-oscillating counterparts since they can be operated closer to the tank resonant frequency. The analysis necessary to predict the behaviour of such converters, based on the constru... View full abstract»

• ### New mathematical model for analysing three-phase controlled rectifier using switching functions

Publication Year: 2010, Page(s):95 - 110
Cited by:  Papers (5)
| | PDF (841 KB)

The aim of this study is to present a set of closed-form analytical equations in order to enable the computation of the three-phase bridge rectifier steady-state performance estimation. The proposed method presented in this study is a fast, accurate and effective mathematical model for analysing three-phase full-wave controlled rectifiers. The steady-state mathematical model is based on the deriva... View full abstract»

• ### Approach to low-cost prevention of DC injection in transformerless grid connected inverters

Publication Year: 2010, Page(s):111 - 119
Cited by:  Papers (26)  |  Patents (2)
| | PDF (551 KB)

With the growing popularity of distributed generation, there are concerns over the effects that distributed generators may have on power quality. One highly important aspect often overlooked when considering power quality is DC current and the effects that it may have on distribution components. This study considers the problems associated with DC current injection into the electricity distributio... View full abstract»

• ### Five-level cascade asymmetric multilevel converter

Publication Year: 2010, Page(s):120 - 128
Cited by:  Papers (19)
| | PDF (924 KB)

A five-level cascaded asymmetric multilevel converter is analysed and designed. This topology synthesises five voltage levels with a reduced number of components when compared to the most common symmetric topologies. It allows getting more voltage levels with less switching states. Its behaviour is similar to a hybrid converter with the advantage of working with only one DC bus. It does not presen... View full abstract»

• ### A DC-DC multilevel boost converter

Publication Year: 2010, Page(s):129 - 137
Cited by:  Papers (112)
| | PDF (613 KB)

A DC-DC converter topology is proposed. The DC-DC multilevel boost converter (MBC) is a pulse-width modulation (PWM)-based DC-DC converter, which combines the boost converter and the switched capacitor function to provide different output voltages and a self-balanced voltage using only one driven switch, one inductor, 2N-1 diodes and 2N-1 capacitors for an Nx MBC. It is propos... View full abstract»

• ### An efficient algorithm for generalised single-phase converter

Publication Year: 2010, Page(s):138 - 145
Cited by:  Papers (7)
| | PDF (913 KB)

This paper describes the various common converters and illustrates the working principle of single phase matrix converter that shows a single topology capable of performing all function required in basic converter. An algorithm is developed that enables a single-phase matrix converter (SPMC) to perform functions of a generalised single phase power electronics converter such as acting as a frequenc... View full abstract»

## Aims & Scope

IET Power Electronics brings together five principal power electronics themes including: applications of power semiconductor technology; circuits; devices; techniques; and performance management.

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