By Topic

# IET Power Electronics

## Filter Results

Displaying Results 1 - 13 of 13
• ### New zero-voltage switching DC-DC converter for renewable energy conversion systems

Publication Year: 2012, Page(s):393 - 400
Cited by:  Papers (6)
| | PDF (840 KB)

This study presents a novel DC-DC converter for renewable energy conversion systems with photovoltaic (PV) solar cell or fuel cell stack input. The proposed converter is based on a boost converter and a voltage-doubler configuration with a coupled inductor to achieve high step-up voltage conversion ratio. An active snubber is adopted to clamp the voltage stress of the active switch and to release ... View full abstract»

• ### Modelling and control of a zero current switching high-voltage resonant converter power supply for radio frequency sources

Publication Year: 2012, Page(s):401 - 409
Cited by:  Papers (6)
| | PDF (732 KB)

This study presents the design, modelling, control and implementation of a long-pulse three-phase resonant converter. A d-q equivalent circuit model of the resonant tank system is established first. Based on that, a model of the whole power supply and a state-space multivariable feedback control has been developed. The soft switching, zero current switching, is achieved by combinin... View full abstract»

• ### Automatic dimming multi-lamp fluorescent management system with active input power factor corrector stage

Publication Year: 2012, Page(s):410 - 418
| | PDF (1029 KB)

This study presents the development and implementation of an automatic multi-lamp lighting fluorescent system, based on electronic ballasts with capacity of ideal programmable preheating and dimming capabilities, and digital average current mode control for the active input power factor corrector stage. Furthermore, the proposed system allows remote monitoring and management through a friendly sof... View full abstract»

• ### Zero-voltage switching DC/DC converter with two half-bridge legs and series-parallel transformers

Publication Year: 2012, Page(s):419 - 427
Cited by:  Papers (3)
| | PDF (1246 KB)

A new zero-voltage switching (ZVS) converter with the series half-bridge legs for high DC bus application is presented. Two circuit modules with the interleaved pulse-width modulation are adopted to share the load current. In each circuit module, a series resonant converter with two transformers that are series-connected in primary side and parallel-connected in secondary side is used to achieve l... View full abstract»

• ### Analysis and design of power-controllable CMOS class E RF-tuned power amplifiers

Publication Year: 2012, Page(s):428 - 434
Cited by:  Papers (1)
| | PDF (730 KB)

Conventional approaches for output-power control of class E-tuned power amplifiers are investigated, which reveals a common drawback of presently popular power-control mechanisms. A novel low-distortion, output-power-control prototype architecture based on high-Q compensated varactors is therefore presented in this study. The architecture also allows the employment of high-Q bond-wir... View full abstract»

• ### Topology for multilevel inverters to attain maximum number of levels from given DC sources

Publication Year: 2012, Page(s):435 - 446
Cited by:  Papers (19)
| | PDF (1688 KB)

This study introduces a new multilevel converter topology, which can synthesise all possible additive and subtractive combinations of input DC levels in the output voltage waveform with fewer power electronic switches. An appropriate modulation scheme has also been proposed for low switching frequency operation of the proposed topology. As compared with the classic multilevel topologies, the propo... View full abstract»

• ### Implementation of an interleaved resonant converter for high-voltage applications

Publication Year: 2012, Page(s):447 - 455
Cited by:  Papers (4)
| | PDF (1542 KB)

An interleaved resonant converter for high voltage application is presented in this paper. There are two half-bridge legs connected in series and two split capacitors in the adopted circuit to limit the voltage stress of each active switch at one-half of input voltage. Thus MOSFETs with 600V voltage rating can be adopted for 1200V input voltage application. For each half-bridge leg, two series res... View full abstract»

• ### Generalisation of flying capacitor-based active-neutralpoint- clamped multilevel converter using voltage-level modulation

Publication Year: 2012, Page(s):456 - 466
Cited by:  Papers (9)
| | PDF (1264 KB)

A generalised n-level flying capacitor (FC)-based active-neutral-point-clamped (ANPC) voltage source converter is discussed in this study. The converter is based on the arrangement of a three-level ANPC cell and a number of two-level cells creating an n-level line-to-neutral voltage waveform. The converter is operated under a phase-shifted carrier (PSC) pulse-width modulation (PWM) t... View full abstract»

• ### Analysis and design of zero-voltage-switching parallel interleaved current-doubler converters with coupled output inductors

Publication Year: 2012, Page(s):467 - 476
Cited by:  Papers (3)
| | PDF (890 KB)

A zero-voltage switching (ZVS) parallel interleaved current-doubler converter with coupled output inductors is proposed. The leakage inductor is used to be the resonant inductor directly to achieve ZVS function of the converter and improve the converter's efficiency. This converter which is operated in the asymmetrical pulse width modulation can make the duty cycle exceed 50'. Both transformers of... View full abstract»

• ### Maximum modulation index of direct torque control with circular flux trajectory

Publication Year: 2012, Page(s):477 - 484
| | PDF (412 KB)

This study considers the maximum modulation index of a direct torque control (DTC)-based converter. The maximum modulation index and maximum output voltage of the circular flux trajectory DTC method are analytically derived, and the result is validated by measurements. It is found out that the maximum modulation index of a DTC converter with a circular flux trajectory is slightly lower than the li... View full abstract»

• ### Investigation and evaluation of active frequency drifting methods in multiple grid-connected inverters

Publication Year: 2012, Page(s):485 - 492
Cited by:  Papers (5)
| | PDF (926 KB)

As the development of distributed generation goes on, more grid-connected inverters are being inevitably connected to the same local electrical power system and the perturbations exerted by each inverter for islanding detection might interfere with each other. The islanding detection principle of commonly used active frequency drift (AFD), sandia frequency drift and slip-mode frequency shift are c... View full abstract»

• ### Space vector-based synchronised bus-clamping pulse width modulation algorithms for three-level voltage source inverter in overmodulation region

Publication Year: 2012, Page(s):493 - 500
Cited by:  Papers (1)
| | PDF (882 KB)

The main objective of the present work is to develop space vector-based synchronised bus-clamping pulse width modulation algorithms to improve total harmonic distortion and higher DC-bus utilisation of the three-level inverter in overmodulation region. The proposed algorithms can generate synchronised pulse width modulation waveforms with all possible pulse number preserving all the waveform symme... View full abstract»

• ### Transformer-less three-port grid-connected power converter for distribution power generation system with dual renewable energy sources

Publication Year: 2012, Page(s):501 - 509
Cited by:  Papers (4)
| | PDF (661 KB)

This study proposes a novel transformer-less three-port grid-connected power converter for a distribution power generation system with dual renewable energy sources. The proposed three-port power converter is configured by a three-leg bridge converter, a common-mode circuit and a filter inductor set. The proposed three-port power converter has a high-voltage DC port, a low-voltage DC port and an A... 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.

Full Aims & Scope

## Meet Our Editors

IET Research Journals
iet_pel@theiet.org