Iron Loss Properties of a Nanocrystalline Ring Core under Si-IGBT and GaN-FET Inverter Excitation

Yao, Atsushi; Sugimoto, Takaya; Fujisaki, Keisuke

doi:10.1541/ieejias.139.276

Cited by 11 publications

(15 citation statements)

References 24 publications

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“…Because of this magnetic field, multiple small loops appear in B ‐ H curve, in addition to the major loop. These are called minor loops and correspond to the mentioned iron loss 8–10 that are called carrier harmonic iron loss in this paper.…”

Section: Introductionmentioning

confidence: 99%

“…When an inverter is configured from GaN‐ET (GaN‐Field Effect Transistor) or other high‐speed elements, fast switching operation is accompanied with superimposition of MHz‐order oscillations on the inverter's current waveforms; this phenomenon called ringing was discovered in experiments with windings put on ring‐shaped iron cores 8,9 . Both in these ring‐shaped samples and moto windings, the major circuit component is inductance L .…”

Section: Introductionmentioning

confidence: 99%

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Iron loss characteristics of motors fed by fast switching GaN‐FET inverters

Naitoh

Sugimoto

Fujisaki

2021

Electrical Engineering Japan

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Iron losses generated in a motor made of nonoriented electrical steel and driven by an inverter consisting of fast switching power semiconductor devices, GaN‐FETs were studied. The rectangular voltage pulses from the pulse width modulation applied to the motor generate not only a fundamental current but also harmonic currents. One of them increases considerably at the resonant frequency of the L, R, and C components in the motor. The phenomenon is called ringing. The ringing current, as well as the other currents, result in their respective iron losses. This study experimentally confirms that ringing occurs in the motor and quantitatively evaluates the iron loss related to it. The proportional dependence of the loss on the carrier frequency of PWM is found out.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Iron loss characteristics of motors fed by fast switching GaN‐FET inverters

Naitoh

Sugimoto

Fujisaki

2021

Electrical Engineering Japan

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“…Wide-bandgap (WBG) power semiconductors such as silicon carbide (SiC) and gallium nitride (GaN) have been widely researched owing to their advantages of high withstand voltage, fast switching and high-frequency operation, high-temperature tolerance, and low on-resistance [1,2,3,4,5,6,7,8]. For instance, miniaturization and high output power density of power converters can be achieved by the high-frequency operation [1,9,10,11].…”

Section: Introductionmentioning

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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“…PWM inverter outputs have higher harmonic components superimposed in fundamental waveforms. Many studies have reported that, due to high harmonic components, iron loss of the motor core under PWM inverter excitation increases [7][8][9][10][11][12][13][14][15][16][17] by 10%-50% 10) compared with sinusoidal excitation. In these researches, magnetic hysteresis loops had many minor loops.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 1 shows the configuration of the NMM ring specimen and its measurement system. The ring specimen is composed of NMM (FT-3M), cut into a ring shape by wire electric discharge machining 16) . The height, inner diameter, and outer diameter of the ring core of NMM are 7, 102, and 127 mm, respectively 4,6,16) .…”

Section: Introductionmentioning

confidence: 99%

Iron Loss and Magnetic Hysteresis Properties of Nanocrystalline Ring Core at High and Room Temperatures Under Inverter Excitation

2020

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This paper discusses the iron loss and magnetic hysteresis properties of a ring core of nanocrystalline magnetic materials (NMM) at room temperature (RT) and high temperature (HT) under pulse-width-modulation (PWM) inverter excitation. As in the case of the DC hysteresis loop, the coercivity of the NMM ring core at 300 • C (HT) under PWM inverter excitation is larger than that at RT, mainly because of weakening of intergranular magnetic coupling at HT. In addition, in the NMM ring core, the area of the minor loops at HT increases compared with that at RT. Iron loss in the NMM core fed by the PWM inverter increases in tandem with an increase in temperature. Hysteresis loss increases dramatically in tandem with an increase in temperature for every tested case. In a low carrier frequency region, the eddy current loss at 300 • C increases.

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Iron Loss Properties of a Nanocrystalline Ring Core under Si-IGBT and GaN-FET Inverter Excitation

Cited by 11 publications

References 24 publications

Iron loss characteristics of motors fed by fast switching GaN‐FET inverters

Iron loss characteristics of motors fed by fast switching GaN‐FET inverters

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

Iron Loss and Magnetic Hysteresis Properties of Nanocrystalline Ring Core at High and Room Temperatures Under Inverter Excitation

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