Control of a single-phase standalone inverter without an output voltage sensor

Subhajyoti Mukherjee; Pourya Shamsi; Mehdi Ferdowsi

doi:10.1109/TPEL.2016.2605126

Control of a single-phase standalone inverter without an output voltage sensor

Subhajyoti Mukherjee, Pourya Shamsi, Mehdi Ferdowsi

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

This paper analyzes the possibility of controlling the output voltage of a standalone single-phase inverter by directly controlling the output filter capacitor current without using a dedicated output voltage sensor. The plant modeling and controller design are presented. The proposed method depends on having the value of the output filter capacitance. A method to estimate the output filter capacitance is also presented. Rigorous analysis is done to show that the proposed sensorless scheme is largely insensitive to parameter variations and ensure that the output voltage is within specified regulations at utility level. It is also demonstrated in this paper that compared to the conventional voltage control scheme the proposed control scheme ensures an improved total harmonic distortion of the output voltage waveform. Experimental results presented validate the proposed scheme.

Original language	English
Pages (from-to)	5601-5612
Number of pages	12
Journal	IEEE Transactions on Power Electronics
Volume	32
Issue number	7
DOIs	https://doi.org/10.1109/TPEL.2016.2605126
State	Published - Jul 2017
Externally published	Yes

Keywords

Inverter control
nonlinear load
proportional resonant (PR) controllers
sensorless control
total harmonic distortion (THD)
virtual flux

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10.1109/TPEL.2016.2605126

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title = "Control of a single-phase standalone inverter without an output voltage sensor",

abstract = "This paper analyzes the possibility of controlling the output voltage of a standalone single-phase inverter by directly controlling the output filter capacitor current without using a dedicated output voltage sensor. The plant modeling and controller design are presented. The proposed method depends on having the value of the output filter capacitance. A method to estimate the output filter capacitance is also presented. Rigorous analysis is done to show that the proposed sensorless scheme is largely insensitive to parameter variations and ensure that the output voltage is within specified regulations at utility level. It is also demonstrated in this paper that compared to the conventional voltage control scheme the proposed control scheme ensures an improved total harmonic distortion of the output voltage waveform. Experimental results presented validate the proposed scheme.",

keywords = "Inverter control, nonlinear load, proportional resonant (PR) controllers, sensorless control, total harmonic distortion (THD), virtual flux",

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AB - This paper analyzes the possibility of controlling the output voltage of a standalone single-phase inverter by directly controlling the output filter capacitor current without using a dedicated output voltage sensor. The plant modeling and controller design are presented. The proposed method depends on having the value of the output filter capacitance. A method to estimate the output filter capacitance is also presented. Rigorous analysis is done to show that the proposed sensorless scheme is largely insensitive to parameter variations and ensure that the output voltage is within specified regulations at utility level. It is also demonstrated in this paper that compared to the conventional voltage control scheme the proposed control scheme ensures an improved total harmonic distortion of the output voltage waveform. Experimental results presented validate the proposed scheme.

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KW - nonlinear load

KW - proportional resonant (PR) controllers

KW - sensorless control

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Control of a single-phase standalone inverter without an output voltage sensor

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