Title: Parallel operation of inverters with different types of output impedance
Abstract: It is well known that inverters are of different types of output impedance and that the widely-used droop control strategy takes a different form when the impedance involved changes its type. As a result, it is difficult to operate inverters with different types of output impedance in parallel. In this paper, a universal droop control strategy that can be applied to inverters with any type of output impedance with a phase angle between -π/2 rad and π/2 rad is presented. It takes the form of E ~ P and f ~ Q droop relationships, which is the same as the conventional droop control principle for inverters with resistive output impedance (R-inverters). Furthermore, a corresponding robust droop control structure is adopted to develop the universal droop controller. Simulation results are provided to demonstrate the feasibility of the universal droop controller.
Publication Year: 2013
Publication Date: 2013-11-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 23
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