Control of a Three Phase Inverter Mimicking Synchronous Machine with Fault Ridethrough Capability

Abstract

Due to high penetration of renewable energy systems in the distribution grid, it has become an extreme challenge to maintain synchronous stability of the grid. During asymmetrical faults the major challenge is to limit the inverter current and keep it within limits so that the inverter relay does not trip. Such a control methodology ensures seamless power to the consumers without damaging the inverter. In this paper a second order generalized integrator based inverter control operating like a virtual synchronous machine is proposed. The calculations for the inverter control states are performed on a per phase basis and the control algorithm is developed. The dynamic equations describing the proposed control algorithm with its analyses is presented in this paper. Numerical simulations based on MATLAB/Simulink are performed to verify the efficacy of the proposed control technique on a three phase grid connected inverter.

Meeting Name

9th Annual IEEE Green Technologies Conference (2017: Mar. 29-31, Denver, CO)

Department(s)

Electrical and Computer Engineering

Research Center/Lab(s)

Intelligent Systems Center

Keywords and Phrases

Couplings; Electric Fault Currents; MATLAB; Phase Locked Loops; Reactive Power; Renewable Energy Resources; Synchronous Machinery; Active Power; Phase Locked Loop (PLL); Point Of Common Coupling (PCC); Secondorder Generalized Integrator (SOGI); Three-Phase Inverter; Virtual Inertia; Electric Inverters; Line To Ground (LG) Fault; Second Order Generalized Integrator (SOGI); Line to Ground (LG) Fault; Point of Common Coupling (PCC); Three Phase Inverter

International Standard Book Number (ISBN)

978-1509045358; 978-1509045365

International Standard Serial Number (ISSN)

2166-5478

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2017 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Mar 2017

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