Design and control of DC/AC converters in parallel with diode rectifiers for regenerative applications

Zhigang Gao; Rui Li; Qi Lu

doi:10.6113/JPE.2017.17.4.1071

Design and control of DC/AC converters in parallel with diode rectifiers for regenerative applications

Zhigang Gao^*, Rui Li, Qi Lu

^*Corresponding author for this work

School of Automation

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

This paper introduces a DC/AC converter, which can be connected in parallel with a diode rectifier for regenerative applications. The DC/AC converter is supposed to transmit regenerative energy to the power grid when a motor is braking. Isolation transformers are not needed in the topology, which can reduce the size and cost. An analysis of the zero-order current existing in the system is carried out. In addition, algorithms to minimize the zero-order current, control the power factor and keep the DC bus voltage stable are discussed. A 55kW industrial prototype is built to verify the proposed analysis and control strategies.

Original language	English
Pages (from-to)	1071-1087
Number of pages	17
Journal	Journal of Power Electronics
Volume	17
Issue number	4
DOIs	https://doi.org/10.6113/JPE.2017.17.4.1071
Publication status	Published - 2017

Keywords

Bi-directional
DC/AC converters
PWM
Regenerative energy
Zero-order current

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10.6113/JPE.2017.17.4.1071

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abstract = "This paper introduces a DC/AC converter, which can be connected in parallel with a diode rectifier for regenerative applications. The DC/AC converter is supposed to transmit regenerative energy to the power grid when a motor is braking. Isolation transformers are not needed in the topology, which can reduce the size and cost. An analysis of the zero-order current existing in the system is carried out. In addition, algorithms to minimize the zero-order current, control the power factor and keep the DC bus voltage stable are discussed. A 55kW industrial prototype is built to verify the proposed analysis and control strategies.",

keywords = "Bi-directional, DC/AC converters, PWM, Regenerative energy, Zero-order current",

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AU - Li, Rui

AU - Lu, Qi

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N2 - This paper introduces a DC/AC converter, which can be connected in parallel with a diode rectifier for regenerative applications. The DC/AC converter is supposed to transmit regenerative energy to the power grid when a motor is braking. Isolation transformers are not needed in the topology, which can reduce the size and cost. An analysis of the zero-order current existing in the system is carried out. In addition, algorithms to minimize the zero-order current, control the power factor and keep the DC bus voltage stable are discussed. A 55kW industrial prototype is built to verify the proposed analysis and control strategies.

AB - This paper introduces a DC/AC converter, which can be connected in parallel with a diode rectifier for regenerative applications. The DC/AC converter is supposed to transmit regenerative energy to the power grid when a motor is braking. Isolation transformers are not needed in the topology, which can reduce the size and cost. An analysis of the zero-order current existing in the system is carried out. In addition, algorithms to minimize the zero-order current, control the power factor and keep the DC bus voltage stable are discussed. A 55kW industrial prototype is built to verify the proposed analysis and control strategies.

KW - Bi-directional

KW - DC/AC converters

KW - PWM

KW - Regenerative energy

KW - Zero-order current

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JO - Journal of Power Electronics

JF - Journal of Power Electronics

IS - 4

ER -

Design and control of DC/AC converters in parallel with diode rectifiers for regenerative applications

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Keywords

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