TY - GEN
T1 - A Voltage Sensorless Control of a Three Phase Grid Connected Inverter Based on Lyapunov Energy Function under Unbalanced Grid Voltage Condition
AU - Chowdhury, Vikram Roy
AU - Mukherjee, Subhajyoti
AU - Kimball, Jonathan
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/12/3
Y1 - 2018/12/3
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 - Dual second order generalized integrator (DSOGI)
KW - Lyapunov function based current controller
KW - Phase locked loop (PLL)
KW - Voltage sensorless
UR - http://www.scopus.com/inward/record.url?scp=85060310589&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2018.8558434
DO - 10.1109/ECCE.2018.8558434
M3 - Conference contribution
AN - SCOPUS:85060310589
T3 - 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
SP - 4884
EP - 4888
BT - 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
Y2 - 23 September 2018 through 27 September 2018
ER -