Design and Control of a GaN-Based, 13-Level, Flying Capacitor Multilevel Inverter

被引：63

作者：

Barth, Christopher B. ^{[1
]}

Assem, Pourya ^{[2
]}

Foulkes, Thomas ^{[1
]}

Chung, Won Ho ^{[3
]}

Modeer, Tomas ^{[4
]}

Lei, Yutian ^{[5
]}

Pilawa-Podgurski, Robert C. N. ^{[2
]}

机构：

[1] Univ Illinois, Dept Elect & Comp Engn, Urbana, IL 61801 USA

[2] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA

[3] Univ Calif Los Angeles, Dept Elect & Comp Engn, Los Angeles, CA 90095 USA

[4] SCiBreak, S-17677 Jarfalla, Sweden

[5] Tesla Inc, Palo Alto, CA 94304 USA

来源：

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS | 2020年 / 8卷 / 03期

关键词：

Aircraft propulsion; ceramic capacitor; DC-AC power converters; flying capacitor multilevel converter (FCML); gallium nitride (GaN); high-density inverter; inverter; phase shifted PWM (PSPWM); specific power density; VOLTAGE-BALANCING METHOD; PHASE-SHIFTED PWM; MODULATION; CONVERTER;

D O I：

10.1109/JESTPE.2019.2956166

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Multilevel topologies are an appealing method to achieve higher power density converters for both mobile and stationary systems. This article discusses the design and high-performance hardware implementation of a 13-level, flying capacitor multilevel (FCML) inverter. Derivation of flying capacitor sizing for ac output voltages (for an arbitrary level FCML) is provided. Operating from an 800-Vdc bus, this hardware prototype utilizes switch modules with 100-V rating. Moreover, a 120-kHz switching frequency is enabled through the use of gallium nitride (GaN) FETs and the development of custom-integrated switching cells, which reduce commutation loop inductance and allow for a modular design. The frequency multiplication effect of FCML inverters allows the output inductor of the inverter to be made exceptionally small (4.7 mu H) while maintaining a 0.7% total harmonic distortion (THD) due to the 1.44-MHz effective inductor ripple frequency.

引用

页码：2179 / 2191

页数：13

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