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|Title:||A simple single-input-single-output (SISO) model for a three-phase PWM rectifier|
|Keywords:||Pulsewidth modulation (PWM) power converters|
Voltage mode control
|Source:||Yin, B.,Oruganti, R.,Panda, S.K.,Bhat, A.K.S. (2009). A simple single-input-single-output (SISO) model for a three-phase PWM rectifier. IEEE Transactions on Power Electronics 24 (3) : 620-631. ScholarBank@NUS Repository. https://doi.org/10.1109/TPEL.2008.2012529|
|Abstract:||The challenge in controlling a three-phase pulsewidth modulation (PWM) rectifier under balanced conditions arises from the fact that the state-space averaged model reported in literature has a multi-input - multi-output nonlinear structure and furthermore exhibits a nonminimum phase feature. In this paper, a simple single-input-single-output model is constructed by separating the d-axis and the q-axis dynamics through appropriate nonlinear feedforward decoupling while maintaining nearly unity power factor operation. With the proposed model, the nonminimum phase feature inherent in an ac-to-dc rectifier becomes a simple right-half-plane zero appearing in the small-signal control-to-output transfer function. In addition, the model exhibits a close similarity to a dc-dc boost converter under both large-signal and small-signal operating conditions. This makes it possible to extend the system analysis and control design techniques of dc-dc converters to the three-phase PWM rectifier also. The validity of the proposed model has been verified experimentally in the frequency domain under open-loop operation of the PWM rectifier. The usefulness of the model is further demonstrated through closed-loop operation of the rectifier with both voltage mode and inner-current-loop-based schemes. © 2009 IEEE.|
|Source Title:||IEEE Transactions on Power Electronics|
|Appears in Collections:||Staff Publications|
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