Iron Losses and Magnetic-Hysteresis Properties Under GaN Inverter Excitation at High-Frequencies

Yao, Atsushi; Moriyama, R.; Hatakeyama, Tomoyuki

doi:10.3379/msjmag.2007l002

Cited by 6 publications

(8 citation statements)

References 4 publications

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“…This study paves the way for further research toward higher-speed switching operations, prevention of false turn-off/on, and the precise gate control. High-speed switching also helps reducing iron losses in the magnetic cores used in motors and inductors [29,30].…”

Section: Resultsmentioning

confidence: 99%

High-speed switching operation for a SiC CMOS and power module

Yao

Okamoto

Kato

et al. 2021

IEICE Electron. Express

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This paper deals with the high-speed switching operation of a main circuit when using a silicon carbide (SiC) complementary metaloxide semiconductor (CMOS) and power module for the high-speed drive. When using the developed power module and SiC CMOS gate buffer, we experimentally achieved the turn-on and turn-of switching speeds of about −100 and 80 V/ns at a DC bus voltage of 600 V and a load current of 20 A. Based on the I-V characteristics of the developed SiC CMOS and the gate charge of the SiC power MOSFET, the approximate switching time was calculated.

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Section: Resultsmentioning

confidence: 99%

High-speed switching operation for a SiC CMOS and power module

Yao

Okamoto

Kato

et al. 2021

IEICE Electron. Express

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“…These results indicate that when the dead time increases, the carrier frequency at which the iron loss reaches the minimum value shifts to the low-frequency side. A previous study has shown that owing to the skin effect and the distortion of the input voltage, W decreases and increases with an increase in f c on the order of MHz 17) . This study shows that particularly at such high carrier frequencies ( f c = approximately 1 MHz), the iron loss of the NMM and AMM cores not only depends on the skin effect and the distortion of the input voltage but also significantly depends on the dead time.…”

Section: A D V a N C E P U B L I C A T I O Nmentioning

confidence: 99%

“…In Ref. 17) , the hysteresis (B-H) curve and its minor loop of the conventional NO silicon steel core fed using an inverter under carrier frequencies on the order of MHz without the dead time were observed. For the first time, this study shows that the NMM and AMM cores also have minor loops under inverter excitation at a relatively high carrier frequency of 1 MHz.…”

Section: A D V a N C E P U B L I C A T I O Nmentioning

confidence: 99%

“…Thus, magnetic material cores are excited using a PWM inverter. The waveform generated using the PWM inverter exhibits high-order harmonic components and induces complex hysteresis (B-H) curves in soft magnetic material (motor) cores [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] . Owing to these complex hysteresis (B-H) curves of the cores, the iron loss under PWM inverter excitation increases by approximately 10%-50% compared with that under sinusoidal excitation 2) .…”

Section: Introductionmentioning

confidence: 99%

“…Wide-bandgap (WBG) power semiconductors made of silicon carbide (SiC) and gallium nitride (GaN) have been widely developed and studied as high-voltage, low loss, and particularly high speed switching devises 10,11) . Recently, using these WBG devices, magnetic properties of conventional NO silicon steel cores have been shown under PWM inverter excitation at high carrier frequencies on the order of MHz and without the dead time 17) .…”

Section: Introductionmentioning

confidence: 99%

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Iron Loss and Hysteresis Properties of Nanocrystalline Magnetic Materials Under High Frequency Inverter Excitation

2020

Self Cite

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Recently, wide-bandgap (WBG) power semiconductors made of silicon carbide (SiC) and gallium nitride (GaN) have been widely developed as high-speed switching devises. Many researchers have studied novel magnetic materials, such as nanocrystalline magnetic materials (NMMs), for low-loss electric motors and transformers. This study experimentally examines the hysteresis (B-H) curve and iron loss properties of the NMM core excited using a pulse width modulation (PWM) inverter at high carrier frequencies on the order of MHz with and without the dead time. For comparison, the magnetic properties of amorphous magnetic materials (AMMs) core are also evaluated. Particularly at high carrier frequencies (approximately 1 MHz), the iron loss of NMM and AMM cores significantly depends on the dead time. Compared with the case of the AMM core, the NMM core suppresses the increasing rate of iron losses caused by the dead time because the area of minor loops in NMM becomes small, particularly in high-frequency regions.

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Iron Loss and Magnetic Properties of Magnetic Materials Under Inverter Excitation

Yao

2024

Handbook of Magnetic Material for Motor Drive Systems

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Iron Losses and Magnetic-Hysteresis Properties Under GaN Inverter Excitation at High-Frequencies

Cited by 6 publications

References 4 publications

High-speed switching operation for a SiC CMOS and power module

High-speed switching operation for a SiC CMOS and power module

Iron Loss and Hysteresis Properties of Nanocrystalline Magnetic Materials Under High Frequency Inverter Excitation

Iron Loss and Magnetic Properties of Magnetic Materials Under Inverter Excitation

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