TY - GEN
T1 - An Optimum Tuning Method for DC Bus Voltage Regulation in Double Stage Off-Grid PV Systems
AU - Setiawan, Iwan
AU - Facta, Mochammad
AU - Andromeda, Trias
AU - Hermawan,
AU - Syakur, Abdul
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - This paper presents an optimum control strategy to regulate DC bus voltage in Off-Grid PV systems. The topology of the Off-Grid PV systems chosen in this work is double- stage PV system. The DC bus voltage regulation is achieved by controlling a bidirectional DC-DC converter which is connected between PV and energy storage systems. Internally, the DC bus voltage regulation controller is composed from a current feedback controller which is cascaded with a voltage regulation system. Both controllers are conventional Proportional-Integral (PI) controllers. The PI control parameters for the inner current loop are determined by pole placement technique, whereas for the outer voltage regulation loop, the PI control parameters are determined by using symmetrical optimum (SO) method. From the simulation result it is showed that the stability of the DC bus voltage highly depends on the tuning parameter well known as symmetrical distance of the SO. The greater the symmetrical distance, the relative stability of the system will increase, but on the other hand the speed of response to disturbances will be slower.
AB - This paper presents an optimum control strategy to regulate DC bus voltage in Off-Grid PV systems. The topology of the Off-Grid PV systems chosen in this work is double- stage PV system. The DC bus voltage regulation is achieved by controlling a bidirectional DC-DC converter which is connected between PV and energy storage systems. Internally, the DC bus voltage regulation controller is composed from a current feedback controller which is cascaded with a voltage regulation system. Both controllers are conventional Proportional-Integral (PI) controllers. The PI control parameters for the inner current loop are determined by pole placement technique, whereas for the outer voltage regulation loop, the PI control parameters are determined by using symmetrical optimum (SO) method. From the simulation result it is showed that the stability of the DC bus voltage highly depends on the tuning parameter well known as symmetrical distance of the SO. The greater the symmetrical distance, the relative stability of the system will increase, but on the other hand the speed of response to disturbances will be slower.
KW - Bidirectional DC-DC converter
KW - Off-Grid PV system
KW - Pole placement technique
KW - Symmetrical optimum
UR - http://www.scopus.com/inward/record.url?scp=85123622479&partnerID=8YFLogxK
U2 - 10.1109/ICITACEE53184.2021.9617516
DO - 10.1109/ICITACEE53184.2021.9617516
M3 - Conference contribution
AN - SCOPUS:85123622479
T3 - 2021 8th International Conference on Information Technology, Computer and Electrical Engineering, ICITACEE 2021
SP - 270
EP - 274
BT - 2021 8th International Conference on Information Technology, Computer and Electrical Engineering, ICITACEE 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th International Conference on Information Technology, Computer and Electrical Engineering, ICITACEE 2021
Y2 - 23 September 2021 through 24 September 2021
ER -