Dynamic Optimal Current Modulation for Active Power Conditioners
Date Issued
2015
Date
2015
Author(s)
Tsai, Chia-Jung
Abstract
A dynamic optimal ac line current modulation (DOCM) method for the active power conditioner (APC) is proposed in this thesis. The proposed DOCM method is able to determine the appropriate input current to stabilize the dc-bus voltage as soon as an abrupt power change of the APC occured. By adopting the proposed method, the dc-bus voltage fluctuation can be minimized while providing the feasibility of the dc-bus capacitance reduction. On the other hand, in order to regulate the voltage variation under different power changing scenarios, the regulating slope of the dc-bus voltage under different operating conditions are discussed. Mathematical equations for the proposed DOCM method are derived thoroughly in this paper. Besides, a Controller Area Network (CAN) communication interface is developed for the system monitoring and the power flow control between two micro-grids. Finally, experimental measurements obtained from a 5kVA prototype circuit are presented to verify the performances of the proposed DOCM method.
Subjects
active power conditioner
dynamic optimal ac line current modulation
CAN
Type
thesis
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ntu-104-R02921026-1.pdf
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