Abstract

For parallel multi-inverters, an inverter using resistive-capacitive output impedance (RC-inverter) is proposed. The equivalent output impedances of RC-inverter are designed as resistive-capacitance by introducing virtual resistive-capacitive impedance into the feedback of output current. RC-inverters can not only provide rapid reactive power for low-voltage microgrid to maintain the system voltage stability, but also restrain high frequency resonance between output impedance of inverters and the grid impedance. Based on the equivalent modeling of RC-inverter, a multi-loop power sharing control method for parallel inverters is presented, which mainly includes the outer power droop control, the virtual impedance, and the output voltage control. The simulation and experimental results verify the validity of the proposed control method.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.