Modeling of power electronic loads in AC distribution systems using the generalized State-space averaging method
Emadi, A.
Electr. & Comput. Eng. Dept., Illinois Inst. of Technol., Chicago, IL, USA;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Oct. 2004
Volume: 51,
Issue: 5
On page(s): 992- 1000
ISSN: 0278-0046
INSPEC Accession Number: 8135776
Digital Object Identifier: 10.1109/TIE.2004.834950
Current Version Published: 2004-10-04
Abstract
Most of the loads in ac distribution systems have positive incremental impedance characteristic. However, power electronic loads, when tightly regulated, sink constant power from the system. Therefore, they have negative incremental impedance characteristic. This can cause negative impedance instability. Power electronic loads usually have a controlled or uncontrolled rectifier at the front end. In this paper, these loads are modeled using the generalized state-space averaging method. An assessment of their effects in ac distribution systems is also presented. Experimental results are presented to verify the proposed analysis.
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