TY - JOUR
T1 - Sliding mode controller and lyapunov redesign controller to improve microgrid stability
T2 - A comparative analysis with CPL power variation
AU - Hossain, Eklas
AU - Perez, Ron
AU - Padmanaban, Sanjeevikumar
AU - Mihet-Popa, Lucian
AU - Blaabjerg, Frede
AU - Ramachandaramurthy, Vigna K.
PY - 2017
Y1 - 2017
N2 - To mitigate the microgrid instability despite the presence of dense Constant Power Load (CPL) loads in the system, a number of compensation techniques have already been gone through extensive research, proposed, and implemented around the world. In this paper, a storage based load side compensation technique is used to enhance stability of microgrids. Besides adopting this technique here, Sliding Mode Controller (SMC) and Lyapunov Redesign Controller (LRC), two of the most prominent nonlinear control techniques, are individually implemented to control microgrid system stability with desired robustness. CPL power is then varied to compare robustness of these two control techniques. This investigation revealed the better performance of the LRC system compared to SMC to retain stability in microgrid with dense CPL load. All the necessary results are simulated in Matlab/Simulink platform for authentic verification. Reasons behind inferior SMC performance and ways to mitigate that are also discussed. Finally, the effectiveness of SMC and LRC systems to attain stability in real microgrids is verified by numerical analysis.
AB - To mitigate the microgrid instability despite the presence of dense Constant Power Load (CPL) loads in the system, a number of compensation techniques have already been gone through extensive research, proposed, and implemented around the world. In this paper, a storage based load side compensation technique is used to enhance stability of microgrids. Besides adopting this technique here, Sliding Mode Controller (SMC) and Lyapunov Redesign Controller (LRC), two of the most prominent nonlinear control techniques, are individually implemented to control microgrid system stability with desired robustness. CPL power is then varied to compare robustness of these two control techniques. This investigation revealed the better performance of the LRC system compared to SMC to retain stability in microgrid with dense CPL load. All the necessary results are simulated in Matlab/Simulink platform for authentic verification. Reasons behind inferior SMC performance and ways to mitigate that are also discussed. Finally, the effectiveness of SMC and LRC systems to attain stability in real microgrids is verified by numerical analysis.
KW - Constant power load
KW - Lyapunov redesign control
KW - Microgrid stability
KW - Robustness analysis
KW - Sliding mode control
KW - Variation of CPL power
UR - http://www.scopus.com/inward/record.url?scp=85035195502&partnerID=8YFLogxK
U2 - 10.3390/en10121959
DO - 10.3390/en10121959
M3 - Article
AN - SCOPUS:85035195502
VL - 10
JO - Energies
JF - Energies
IS - 12
M1 - 1959
ER -
