IEEJ Transactions on Industry Applications
Online ISSN : 1348-8163
Print ISSN : 0913-6339
ISSN-L : 0913-6339
A Method to Determine Minimum DC-Link Capacitance in PWM Rectifier-Inverter Systems
Jin XuYukihiko Sato
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2013 Volume 133 Issue 8 Pages 804-811


A method to determine minimum DC-link capacitance in PWM rectifier-inverter systems is proposed. First, a method to calculate the required DC-link capacitance at the steady state is investigated. Next, a method to calculate the DC-link voltage variation of PWM rectifier-inverter systems at a stepwise change in the output power is proposed. The results of the calculation are confirmed by experimental investigation. In addition, when the capacitance of the DC-link is reduced, the parameters that have a significant influence on the DC-link voltage variation are extracted. Then, based on the proposed calculation method for the DC link voltage variation and the constrained conditions determined by the parameters of the PWM rectifier, a calculation method for the minimum required DC-link capacitance at a stepwise change in output power is proposed.

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© 2013 by the Institute of Electrical Engineers of Japan
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