High-Density Nanocrystalline Core Transformer for High-Power High-Frequency Resonant Converter

Shen, Wei; Wang, F.; Boroyevich, Dushan; Tipton, C.W.

doi:10.1109/tia.2007.912726

Cited by 108 publications

(40 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The output voltage is regulated to 200V dc by using a voltagemode pulse width modulation controller with M1 and M2 phase-shifted by 1808. A nanocrystalline core (un-gapped) transformer [16] is used to minimise core loss and winding turns. Table 1 details parameter values associated with the converter.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Energy recovery snubber circuit for a dc–dc push–pull converter

Lim

Williams

Finney

et al. 2012

IET Power Electronics

View full text Add to dashboard Cite

This study presents an active snubber recovery circuit for a dc -dc push-pull converter. Detailed waveform analysis and associated mathematical equations are presented, supported by PSpice simulations and experimentation. More importantly, unlike previous snubbers for the push -pull converter, the presented active recovery circuit remains fully functional over the complete duty cycle range. The proposed snubber technique is practically demonstrated on a 1 kW voltage-fed 48V dc /560V dc step-up push-pull converter. The experiments are conducted with a low-voltage and high-current source, typical of battery, supercapacitor, and photovoltaic source applications.

show abstract

Section: Resultsmentioning

confidence: 99%

“…The voltage fall of M2 is 2V in -V C s 1 (t 4 − t 5 ) in (16). The voltage rise of M1 is V C s 1 (t 4 − t 5 ).…”

Section: T 3 -Tmentioning

confidence: 98%

Energy recovery snubber circuit for a dc–dc push–pull converter

Lim

Williams

Finney

et al. 2012

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…The area product AP EE of a pair of EE is calculated from Fig. 3 and Table 2, AP EE =50.27 cm 4 . In each transformer branch design, the parameters of equation (3) Once a core is chosen, the calculation of primary and secondary turns and wire size is readily accomplished.…”

Section: Magnetic Designmentioning

confidence: 99%

“…The other methods that may reduce in the size and weight of the high-voltage high-frequency transformer are as follows: 1) Adoption of high performance magnetic materials such as nanocrystalline core [4,5]; 2) Adoption of superconducting material [6]; 3) Improvement of the transformer's insulation structure [7,8].…”

Section: Introductionmentioning

confidence: 99%

Design of High Power Density Transformer

DING¹

2017

dtetr

View full text Add to dashboard Cite

Abstract. The traditional high-voltage high-frequency transformer has a drawback of low power density due to the rigorous requirements of high voltage insulation. This paper proposes a new configuration for the magnetic core based on planar EE cores. The parallel connection of planar cores was adopted as a unit, and several units were cascaded to form the high-voltage transformer. The electrical potential distribution of the proposed transformer is more uniform than a traditional transformer, and enables a decrease in the insulation distances. The mechanical configuration of a laboratory prototype is discussed, as well as the electrical, parasitic, and thermal behaviors.

show abstract

“…The use of new materials is a key factor to improve efficiency [23]. Some investigations have demonstrated that it is possible to build such HF transformer for high power ratings [24].…”

Section: B Direct Ac/ac Linkmentioning

confidence: 99%

A Study of Efficiency in a Reduced Matrix Converter for Offshore Wind Farms

Garcés

Molinas

2012

IEEE Trans. Ind. Electron.

113

View full text Add to dashboard Cite

Reduced matrix converter (RMC) is a convenient topology for offshore wind farm due to its potential to reduce the size and weight of the converter, to improve the reliability by removing the electrolytic capacitor, and to increase the efficiency inherent to less stages of conversion. Moreover, it is a very flexible topology which permits different types of operation with a simpler modulation compared with conventional three-phase matrix converter. This paper investigates different modulation strategies applied to RMC for offshore wind farms, focused on efficiency improvement of the entire convention system. Simulation results using a detailed loss model for high-power level are presented. Four cases are investigated according to the modulation strategies (space vector modulation and carrier-based modulation) and the operation principle (current source converter or voltage source converter). Losses in the clamp circuit are also calculated. Different wind velocities are considered in the simulations. Results show that current source operation with space vector modulation presents minimum losses at nominal wind velocity. This operation is suitable for series connection of offshore wind farms which has been reported as the most efficient alternative from the grid losses point of view.Index Terms-Emerging topology, generation of electrical energy, matrix converter, renewable energy systems, wind energy.

show abstract

High-Density Nanocrystalline Core Transformer for High-Power High-Frequency Resonant Converter

Cited by 108 publications

References 23 publications

Energy recovery snubber circuit for a dc–dc push–pull converter

Energy recovery snubber circuit for a dc–dc push–pull converter

Design of High Power Density Transformer

A Study of Efficiency in a Reduced Matrix Converter for Offshore Wind Farms

Contact Info

Product

Resources

About