A Voltage Sensorless Control of a Three Phase Grid Connected Inverter based on Lyapunov Energy Function under Unbalanced Grid Voltage Condition

Vikram Roy Chowdhury; Subhajyoti Mukherjee; Jonathan W. Kimball

doi:10.1109/ECCE.2018.8558434

A Voltage Sensorless Control of a Three Phase Grid Connected Inverter based on Lyapunov Energy Function under Unbalanced Grid Voltage Condition

Vikram Roy Chowdhury
, Subhajyoti Mukherjee
, Jonathan W. Kimball

Electrical and Computer Engineering

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

Abstract

Voltage sensing in a three-phase grid-connected inverter can be expensive, and introduces vulnerability to the sensor's failure. To address this problem, a sensorless current control strategy is introduced which is composed of two basic elements. First, a current controller based on a Lyapunov energy function is derived by the assumption of known grid voltage. Next, a dual second-order generalized integrator (DSOGI) structure is utilized to extract the positive sequence grid voltage from the Lyapunov-based current controller outputs and generate the unit vectors from the phase locked loop. The methodology presented has been verified in simulation using MATLAB/Simulink and PLECS. Experimental validation is provided by a reduced scale laboratory prototype.

Original language	American English
Journal	Proceedings of the 2018 IEEE Energy Conversion Congress and Exposition (2018, Portland, OR)
DOIs	https://doi.org/10.1109/ECCE.2018.8558434
State	Published - Sep 1 2018

Keywords

Controllers
Current controller
Dual second order generalized integrator (DSOGI)
Electric current control
Electric inverters
Energy conversion
Experimental validations
Locks (fasteners)
Lyapunov energy functions
Lyapunov function based current controller
Lyapunov functions
MATLAB
Phase Locked Loop (PLL)
Phase locked loops
Second-order generalized integrators
Sensorless
Sensorless control
Three-phase grid connected inverters
Voltage sensorless
Voltage sensorless controls

Disciplines

Electrical and Computer Engineering

Access to Document

10.1109/ECCE.2018.8558434License: Unspecified

https://doi.org/10.1109/ECCE.2018.8558434

Cite this

A Voltage Sensorless Control of a Three Phase Grid Connected Inverter based on Lyapunov Energy Function under Unbalanced Grid Voltage Condition. / Chowdhury, Vikram Roy; Mukherjee, Subhajyoti; Kimball, Jonathan W.
In: Proceedings of the 2018 IEEE Energy Conversion Congress and Exposition (2018, Portland, OR), 01.09.2018.

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

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title = "A Voltage Sensorless Control of a Three Phase Grid Connected Inverter based on Lyapunov Energy Function under Unbalanced Grid Voltage Condition",

abstract = " Voltage sensing in a three-phase grid-connected inverter can be expensive, and introduces vulnerability to the sensor's failure. To address this problem, a sensorless current control strategy is introduced which is composed of two basic elements. First, a current controller based on a Lyapunov energy function is derived by the assumption of known grid voltage. Next, a dual second-order generalized integrator (DSOGI) structure is utilized to extract the positive sequence grid voltage from the Lyapunov-based current controller outputs and generate the unit vectors from the phase locked loop. The methodology presented has been verified in simulation using MATLAB/Simulink and PLECS. Experimental validation is provided by a reduced scale laboratory prototype.",

keywords = "Controllers, Current controller, Dual second order generalized integrator (DSOGI), Electric current control, Electric inverters, Energy conversion, Experimental validations, Locks (fasteners), Lyapunov energy functions, Lyapunov function based current controller, Lyapunov functions, MATLAB, Phase Locked Loop (PLL), Phase locked loops, Second-order generalized integrators, Sensorless, Sensorless control, Three-phase grid connected inverters, Voltage sensorless, Voltage sensorless controls",

author = "Chowdhury, \{Vikram Roy\} and Subhajyoti Mukherjee and Kimball, \{Jonathan W.\}",

year = "2018",

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doi = "10.1109/ECCE.2018.8558434",

language = "American English",

journal = "Proceedings of the 2018 IEEE Energy Conversion Congress and Exposition (2018, Portland, OR)",

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AU - Chowdhury, Vikram Roy

AU - Mukherjee, Subhajyoti

AU - Kimball, Jonathan W.

PY - 2018/9/1

Y1 - 2018/9/1

N2 - Voltage sensing in a three-phase grid-connected inverter can be expensive, and introduces vulnerability to the sensor's failure. To address this problem, a sensorless current control strategy is introduced which is composed of two basic elements. First, a current controller based on a Lyapunov energy function is derived by the assumption of known grid voltage. Next, a dual second-order generalized integrator (DSOGI) structure is utilized to extract the positive sequence grid voltage from the Lyapunov-based current controller outputs and generate the unit vectors from the phase locked loop. The methodology presented has been verified in simulation using MATLAB/Simulink and PLECS. Experimental validation is provided by a reduced scale laboratory prototype.

AB - Voltage sensing in a three-phase grid-connected inverter can be expensive, and introduces vulnerability to the sensor's failure. To address this problem, a sensorless current control strategy is introduced which is composed of two basic elements. First, a current controller based on a Lyapunov energy function is derived by the assumption of known grid voltage. Next, a dual second-order generalized integrator (DSOGI) structure is utilized to extract the positive sequence grid voltage from the Lyapunov-based current controller outputs and generate the unit vectors from the phase locked loop. The methodology presented has been verified in simulation using MATLAB/Simulink and PLECS. Experimental validation is provided by a reduced scale laboratory prototype.

KW - Controllers

KW - Current controller

KW - Dual second order generalized integrator (DSOGI)

KW - Electric current control

KW - Electric inverters

KW - Energy conversion

KW - Experimental validations

KW - Locks (fasteners)

KW - Lyapunov energy functions

KW - Lyapunov function based current controller

KW - Lyapunov functions

KW - MATLAB

KW - Phase Locked Loop (PLL)

KW - Phase locked loops

KW - Second-order generalized integrators

KW - Sensorless

KW - Sensorless control

KW - Three-phase grid connected inverters

KW - Voltage sensorless

KW - Voltage sensorless controls

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M3 - Article

JO - Proceedings of the 2018 IEEE Energy Conversion Congress and Exposition (2018, Portland, OR)

JF - Proceedings of the 2018 IEEE Energy Conversion Congress and Exposition (2018, Portland, OR)

ER -

A Voltage Sensorless Control of a Three Phase Grid Connected Inverter based on Lyapunov Energy Function under Unbalanced Grid Voltage Condition

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Keywords

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