New core loss measurement method with partial cancellation concept

Hou, Dibo; Mu, Mingkai; Lee, Fred C.; Li, Qiang

doi:10.1109/apec.2014.6803391

Cited by 17 publications

(4 citation statements)

References 6 publications

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“…A variation on this approach uses an air-core transformer in place of the capacitor to cancel the reactive component over a wider frequency range [41], [42]. Although the sensitivity to phase error is reduced by the methods of [40]- [42], the phase information is still necessary in the measurement. An alternative to two-winding methods is the resonant Q measurement approach in [7].…”

Section: Appendix Core Loss Measurement Methodsmentioning

confidence: 99%

“…The two-winding method is sensitive to phase errors, which become increasingly difficult to control at higher frequencies. Phase errors can be reduced by adding a resonant capacitor to the drive winding and using the sum of the sense winding voltage and the capacitor voltage for the voltage measurement [40], [42]. A variation on this approach uses an air-core transformer in place of the capacitor to cancel the reactive component over a wider frequency range [41], [42].…”

Section: Appendix Core Loss Measurement Methodsmentioning

confidence: 99%

“…Phase errors can be reduced by adding a resonant capacitor to the drive winding and using the sum of the sense winding voltage and the capacitor voltage for the voltage measurement [40], [42]. A variation on this approach uses an air-core transformer in place of the capacitor to cancel the reactive component over a wider frequency range [41], [42]. Although the sensitivity to phase error is reduced by the methods of [40]- [42], the phase information is still necessary in the measurement.…”

Section: Appendix Core Loss Measurement Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Measurements and Performance Factor Comparisons of Magnetic Materials at High Frequency

Hanson

Belk

Lim

et al. 2016

IEEE Trans. Power Electron.

180

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Abstract-The design of power magnetic components for operation at high frequency (HF, 3-30 MHz) has been hindered by a lack of performance data and by the limited design theory in that frequency range. To address these deficiencies, we have measured and present core loss data for a variety of commercially available magnetic materials in the HF range. In addition, we extend the theory of performance factor for appropriate use in HF design. Since magnetic materials suitable for HF applications tend to have low permeability, we also consider the impact of low permeability on design. We conclude that, with appropriate material selection and design, increased frequencies can continue to yield improved power density well into the HF regime.

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Section: Appendix Core Loss Measurement Methodsmentioning

confidence: 99%

Section: Appendix Core Loss Measurement Methodsmentioning

confidence: 99%

Section: Appendix Core Loss Measurement Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Measurements and Performance Factor Comparisons of Magnetic Materials at High Frequency

Hanson

Belk

Lim

et al. 2016

IEEE Trans. Power Electron.

180

View full text Add to dashboard Cite

show abstract

“…Interesting methods for high frequency core loss measurement with arbitrary waveforms are proposed in [6] and [7], based on canceling the reactive power in the core under test. Using impedance analyzer for measuring and extracting core losses is discussed in [8].…”

Section: Introductionmentioning

confidence: 99%

Dynamic voltage stability for embedded electrical networks in marine vessels using FACTS devices

Benmahdjoub

Mezouar

Bossche

et al. 2021

Int. J. Dynam. Control

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Sophisticated techniques are required for getting accuracy in high frequency power losses of magnetic. This paper presents a high frequency power loss measurement platform (full bridge) that provides accurate assessing of losses in magnetic components. This is obtained by a construction of a thermal shunt with radiator to measure the losses of the bridge. An aluminum strip is used as a "thermal resistor". Two NTC resistors measure the temperature drop across the aluminum strip. The magnetic device loss equals the DC input power of the platform minus the bridge loss. The copper loss can be estimated while using litz wire. Using litz wire windings with sufficiently low diameter of the strands allows neglecting eddy current losses, thus measuring only DC resistance is enough for calculating of copper losses. It can be checked by an RLC meter if the assumption is reasonable. The proposed approach and platform are verified by realization and experiments with a full bridge converter based on SiC switches and operating in frequency range of 50 kHz to 1 MHz. The proposed platform can be used for obtaining the frequency dependence of core losses of magnetic materials, as well as the dependence on duty ratio of the power converter.

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Improving the efficiency and dynamics of 3D integrated POL

Hou

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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New core loss measurement method with partial cancellation concept

Cited by 17 publications

References 6 publications

Measurements and Performance Factor Comparisons of Magnetic Materials at High Frequency

Measurements and Performance Factor Comparisons of Magnetic Materials at High Frequency

Dynamic voltage stability for embedded electrical networks in marine vessels using FACTS devices

Improving the efficiency and dynamics of 3D integrated POL

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