Iron Loss Characteristics of Electrical Steel Sheet under Inverter Excitation by Power Semiconductor with Extremely Low On‐Voltage Property

Odawara, Shunya; Kayamori, Daisuke; Fujisaki, Keisuke

doi:10.1002/eej.22792

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…The purpose of this research is to suggest a possibility of the iron loss decrement by controlling the V on of the inverter devices. Further research is certainly related with motors required (6) .…”

Section: Resultsmentioning

confidence: 99%

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Iron Loss Characteristics of Estimated ON-Voltage of Power Semiconductor by PWM Shaped Voltage Excitation

Yun

Fujisaki

2015

IEEJ Trans. FM

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To clarify the relation between the ON-voltage of power semiconductors in the inverter and the magnetic properties such as iron loss and the magnetic hysteresis curves, the PWM shaped voltage with the virtual ON-voltage is realized experimentally by means of an arbitrary function generator and an amplifier excitation. The iron loss and the width of the minor loop increase linearly with the increasing ON-voltage. Therefore, if the inverter made a virtual voltage waveform generated by a low ON-voltage of the power semiconductor, the iron loss would be reduced.

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Section: Resultsmentioning

confidence: 99%

“…And then, when the switch on the low-side of the inverter is off, the current flows into the diode on the high-side of the inverter. In this time, the load (ring) is affected by V on which is the sum of the V S and the V D (voltage of the diode) (6) (7) .…”

mentioning

confidence: 99%

Iron Loss Characteristics of Estimated ON-Voltage of Power Semiconductor by PWM Shaped Voltage Excitation

Yun

Fujisaki

2015

IEEJ Trans. FM

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“…When the magnetic characteristics of a certain material are evaluated by PWM converter excitation, the high frequency harmonics, induced by the switching properties of the converter, greatly affects the iron loss characteristics [10]- [12]. In addition, when a magnetic properties characterization procedure of a magnetic material under high frequency excitation (hundreds or thousands of kHz) is conducted, the measurement technique as well as the measurement devices become decisive to obtain an accurate measurement [13], [14].…”

Section: Introductionmentioning

confidence: 99%

Current Measurement Issues of a High Frequency GaN Inverter in the MHz Order for Magnetic Characterization

Martínez

Suarez

2019

2019 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Nowadays, there is a great interest in the industry for outstanding magnetic materials with low-loss properties. Moreover, with the introduction of novel Wide Bandgap devices, higher frequency operation has been demanded from these novel magnetic materials. Thereby, magnetic characterization for obtaining the iron loss behavior is essential. However, when a magnetic material is experimentally characterized, it is important to select a suitable measurement device, especially when a semiconductor inverter is powering the magnetic material and it is driven at a high switching frequency. Usually measurement devices have a good response in magnitude, but there is not a clear understanding about how their phase response at high frequencies measurements affects the characterization. Consequently, if the phase characteristics of a measurement device is not well-know, it is likely that the iron loss characterization will not be accurate. This paper studies the measurement issues when an iron loss characterization procedure is conducted. This study is carried out with the comparison of using clamp type current probes and high precision shunt resistors at high switching frequency excitations with a GANFET inverter. In addition, an experimental evaluation of iron losses at several switching frequencies is presented. As a result, the phase characteristics of several sensors was obtained, and it was possible to identify the inaccuracies that they can generate at a high frequency measurement.

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Numerical Analysis on Iron Loss of Reactor Core under Hysteresis <i>B-H</i> Curve Using Play Model for DC-DC Converter

et al. 2020

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The decrease in iron loss in a DC-DC converter is one of the most important issues for energy apparatuses. To reduce the iron loss under the magnetic hysteresis B-H curve caused by the current ripples in the reactor core built in the DC-DC converter, where B and H are the magnetic flux density and magnetic field intensity, respectively, we apply a numerical calculation method based on a suitable magnetic hysteresis model using the play model. When the operating current (corresponding to the magnetic field), on the reactor core is constant, there are two points of magnetic flux density in the B-H curve because of the nonlinear magnetic characteristics, the higher magnetic flux density and lower magnetic flux density. At the higher B and lower B operating points, minor loops appear in the B-H curve when the operating current on the reactor core is varied and has ripples. The calculation results for all three cases show that the performance of the higher B operating point is significantly better than that of the lower B operating point. In particular, a higher B operating point has lower iron loss, smaller magnetic flux density ripples, and larger energy density of the magnetic field caused by the smaller minor loop.

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Iron Loss Characteristics of Electrical Steel Sheet under Inverter Excitation by Power Semiconductor with Extremely Low On‐Voltage Property

Cited by 3 publications

References 5 publications

Iron Loss Characteristics of Estimated ON-Voltage of Power Semiconductor by PWM Shaped Voltage Excitation

Iron Loss Characteristics of Estimated ON-Voltage of Power Semiconductor by PWM Shaped Voltage Excitation

Current Measurement Issues of a High Frequency GaN Inverter in the MHz Order for Magnetic Characterization

Numerical Analysis on Iron Loss of Reactor Core under Hysteresis <i>B-H</i> Curve Using Play Model for DC-DC Converter

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