Stability analysis of three-loop control for three phase voltage source inverter interfacing to the grid based on state variable estimation

In this article, the feasibility of selective harmonic elimination for grid-connected operation of low voltage DC sources is presented. An appropriate fixed switching pattern is able to achieve good quality current while minimizing switching operations, thereby improving the inverter efficiency. In an attempt to establish the potential advantages over conventional PWM techniques, this article demonstrates the application of SHE in grid connect applications, especially in high power levels while maintaining the ability to provide an independent control of active and reactive powers. The problem formulation is based on using a fixed switching pattern that provides a certain fundamental voltage and eliminates 5 th , 7 th , 11 th , 13 th , 17 th , 19 th , 23 rd , 25 th , 29 th , and 31 st harmonic order. A power structure consisting of two-stage power conversion is proposed to make this possible, enabling amplitude and phase control of the generated AC voltage from the inverter. An LCL filter has been used for grid interface. The switching pattern and the development of control structure are presented. Simulation studies are discussed and experimental results shown validate the proposed scheme.

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“…However, approaches that attempt to further minimize the number of sensors as reported in Ref. 31, for example, could also be used.…”

Section: Control Schemementioning

confidence: 99%

A novel approach forgrid‐connectedinverter operation based on selective harmonic elimination

Poongothai

Vasudevan

2020

Int Trans Electr Energ Syst

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Stability Analysis of Three-Loop Control for Three-Phase Voltage Source Inverter Interfaced to the Grid Based on State Variable Estimation

Sivadas

Vasudevan

2018

IEEE Trans. on Ind. Applicat.

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Novel Unified Control Strategies for Seamless Transfer of Operation of Three-Phase PV-Inverter from Grid-tied to Islanded Mode

Kannan¹,

Gnanasekar²,

Vasudevan³

2018

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Stability analysis of three-loop control for three phase voltage source inverter interfacing to the grid based on state variable estimation

Cited by 3 publications

References 15 publications

A novel approach forgrid‐connectedinverter operation based on selective harmonic elimination

A novel approach forgrid‐connectedinverter operation based on selective harmonic elimination

Stability Analysis of Three-Loop Control for Three-Phase Voltage Source Inverter Interfaced to the Grid Based on State Variable Estimation

Novel Unified Control Strategies for Seamless Transfer of Operation of Three-Phase PV-Inverter from Grid-tied to Islanded Mode

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