Analysis of a synergetically controlled two-stage three-phase DC/AC buck-boost converter

被引：40

作者：

Antivachis M. ^{[1
]}

Anderson J.A. ^{[1
]}

Bortis D. ^{[1
]}

Kolar J.W. ^{[1
]}

机构：

[1] The Power Electronic Systems Laboratory, ETH Zurich

来源：

CPSS Transactions on Power Electronics and Applications | 2020年 / 5卷 / 01期

关键词：

Battery charger; Control system design; Modulation strategy; Variable-speed drives; Wide input-output voltage range;

D O I：

10.24295/CPSSTPEA.2020.00004

中图分类号：

学科分类号：

摘要：

Three-phase DC/AC power electronics converter systems used in battery-powered variable-speed drive systems or employed in three-phase mains-supplied battery charger applications usually feature two power conversion stages. In both cases, typically a DC/DC stage is attached to a three-phase DC/ AC stage in order to enable buck-boost functionality and/or a wide input-output voltage operating range. However, a two-stage solution leads to a high number of switched bridge-legs and hence, results in high switching losses, if the degrees of freedom available for controlling the overall system are not utilised. If the DC/DC stage is used to vary the DC link voltage with six times the AC-side frequency, a pulse width modulation (PWM) of always only one phase of the DC/AC stage is sufficient to achieve three-phase sinusoidal output currents. The clamping of two phases (denoted as 1/3 PWM) leads to a drastic reduction of the DC/AC stage switching losses, which is further accentuated by a DC link voltage which is lower than for the conventional modulation schemes. This paper details the operating principle of a three-phase buck-boost converter system using 1/3 PWM and outlines an appropriate control system design. Subsequently, the switching losses and the voltage/current stresses on the converter components are analytically derived. There, a more than 66% reduction of the DC/ AC stage switching losses is calculated without any increase of the stress on the remaining converter components. The theoretical considerations are finally verified on a hardware demonstrator, where the proposed modulation strategy is experimentally compared against several conventional modulation techniques and its clear performance advantages are validated. © 2021 All rights reserved.

引用

页码：34 / 53

页数：19

共 33 条

[1]

Jahns T.M., Dai H., The past, present, and future of power electronics integration technology in motor drives, CPSS Transactions on Power Electronics and Applications, 2, 3, pp. 197-216, (2017)

[2]

Stippich A., van der Broeck C.H., Sewergin A., Wienhausen A.H., Neubert M., Schulting P., Taraborrelli S., Hoek H.V., de Doncker R.W., Key components of modular propulsion systems for next generation electric vehicles, CPSS Transactions on Power Electronics and Applications, 2, 4, pp. 249-258, (2017)

[3]

Hertzke P., Muller N., Schenk S., Wu T., The Global Electric Vehicle Market Is Amped up and on the Rise

[4]

Kim K.A., Liu Y., Chen M., Chiu H., Opening the box: Survey of high power density inverter techniques from the little box challenge, CPSS Transactions on Power Electronics and Applications, 2, 2, pp. 131-139, (2017)

[5]

Kolar J.W., Ertl H., Zach F.C., Influence of the modulation method on the conduction and switching losses of a PWM converter system, IEEE Transactions on Industry Applications, 27, 6, pp. 1063-1075, (1991)

[6]

Hava A.M., Sul S., Kerkman R.J., Lipo T.A., Dynamic overmodulation characteristics of triangle intersection PWM methods, IEEE Transactions on Industry Applications, 35, 4, pp. 896-907, (1999)

[7]

Hava A.M., Kerkman R.J., Lipo T.A., Simple analytical and graphical methods for carrier-based PWM-VSI drives, IEEE Transactions on Power Electronics, 14, 1, pp. 49-61, (1999)

[8]

Liu F., Xin K., Liu Y., An adaptive discontinuous pulse width modulation (DPWM) method for three phase inverter, Proceedings of IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 1467-1472, (2017)

[9]

Charumit C., Kinnares V., Discontinuous SVPWM techniques of three-leg VSI-fed balanced two-phase loads for reduced switching losses and current ripple, IEEE Transactions on Power Electronics, 30, 4, pp. 2191-2204, (2015)

[10]

Antunes F., Torres A.M., A three-phase grid-connected PV system, Proceedings of 26th Annual Conference of the IEEE Industrial Electronics Society (IECON). IECON 2000. 2000 IEEE International Conference on Industrial Electronics, Control and Instrumentation., pp. 723-728, (2000)

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