Design and Performance of Compact Air-Cooled SiC MOSFET Inverters for Low-Power Variable Speed Drive Applications

Bellur, Dakshina-Murthy; Kunin, Sergey; Ayana, Elias; Palmer, Brad; Leonarski, Jaroslaw; Varigonda, Subbarao; Shenai, K.

doi:10.1149/06407.0061ecst

Cited by 4 publications

(1 citation statement)

References 11 publications

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“…Figure 11 illustrates the functional diagram of an air-cooled scalable modular power inverter [5]. This inverter is designed to be scalable and modular to increase the power density across a range of industrial applications.…”

Section: Status Of Wide Bandgap (Wbg) Power Convertersmentioning

confidence: 99%

(Invited) Wide Bandgap (WBG) Power Switching Devices for Distributed Clean Energy Systems

Shenai¹

2015

ECS Trans.

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Important criteria for the widespread usage of DC electricity are the overall energy efficiency and cost of delivering electricity from the point of generation to the point of usage. Wide bandgap (WBG) semiconductor power switching devices, including those made from Silicon Carbide (SiC) and Gallium Nitride (GaN) semiconductors, offer unprecedented advantages over conventional silicon devices in terms of significantly increased energy efficiency and superior thermal performance. For example, for power conversion applications requiring power switches rated below 900V, commercial GaN lateral power transistors offer more than 5% higher energy efficiency with superior load regulation, especially for point-of-load (PoL) converters and wireless energy transfer devices. For higher voltage applications, commercially available vertical SiC power diodes and MOSFETs provide increased energy efficiency than feasible with silicon power MOSFETs and IGBTs, especially for certain low- and medium-power inverters and DC-DC converters.

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Section: Status Of Wide Bandgap (Wbg) Power Convertersmentioning

confidence: 99%

(Invited) Wide Bandgap (WBG) Power Switching Devices for Distributed Clean Energy Systems

Shenai¹

2015

ECS Trans.

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High-frequency split-phase air-cooled SiC inverter for vehicular power generators

Murthy-Bellur

Ayana

Kunin

et al. 2015

2015 IEEE Transportation Electrification Conference and Expo (ITEC)

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This paper presents a novel high-frequency split phase SiC inverter suitable for vehicular power generators. Electrification of vehicles such as recreational vehicles (RV's), fire trucks, and media/telecommunication vans requiring variable-speed generators and power electronics are discussed. Two inverters, designed using commerciall y available ali-SiC MOSFET and Si IGBT power modules, are built and tested to compare their electrical and thermal performances. PSIM models of the SiC MOSFET and Si IGBT inverters are developed to estimate the power losses of the split-phase inverter topolog y . For a given low-cost air-cooling s y stem designed using extruded aluminum heatsink with limited air flow of 300 CFM, the thermal performance of two inverters using an SiC MOSFET and an Si IGBT power module are evaluated to estimate their output power capabilities. For this predefined air-cooling s y stem, the simulation, experimental, and thermal analyses show that SiC MOSFET inverter offers 40% more output power at 14 kW compared with 10 kW of Si IGBT inverter when switched at 20 kHz. Furthermore, for an 8 kW split-phase inverter design, losses in 40 kHz SiC module are evaluated to estimate the size and cost reduction of the output filter inductor to demonstrate the commercialization potential of wide bandgap (WBG) power electronics for mobile power generators in transportation. Keywords-inverters, split-phase output, SiC MOSFET inverter, WBG components, high-frequency inverter, RV inverter The variable-speed generator uses an inverter with output fIlter to produce single-phase 120 Vnns, 60 Hz sinewave output. In applications where split-phase 120/240 Vrms is required, two inverters are usually used with each inverter having a four switch power module and with a double winding arrangement of the alternator. This paper presents a novel split-phase inverter for mobile power generators. The proposed inverter uses a single 6-switch power module instead of two 4-switch power modules required for the two-stage inverter design to produce split-phase output confIguration. The arrival of commercially available SiC power devices has enabled researchers to explore the benefIts of wide band gap (WBG) components at the device level [6]-[9] and at the converter or system level [10]-[17].

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WBG inverter for commercial power generation and vehicle electrification

Murthy-Bellur

Ayana

Kunin

et al. 2015

2015 IEEE International Workshop on Integrated Power Packaging (IWIPP)

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Design and Performance of Compact Air-Cooled SiC MOSFET Inverters for Low-Power Variable Speed Drive Applications

Cited by 4 publications

References 11 publications

(Invited) Wide Bandgap (WBG) Power Switching Devices for Distributed Clean Energy Systems

(Invited) Wide Bandgap (WBG) Power Switching Devices for Distributed Clean Energy Systems

High-frequency split-phase air-cooled SiC inverter for vehicular power generators

WBG inverter for commercial power generation and vehicle electrification

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