H∞ control for switched IT2 fuzzy nonlinear systems with multiple time delays applied in hybrid grid‐connected generation

Highlights：

• The paper designs an IT2 fuzzy controller which can actually add substantially to the stability of the system, enhancing robustness to disturbance and dynamic performance in dealing with time delays.

• We first apply switched model to simulate hybrid grid-connected generation system and it can approach the physical truth well, which makes the theoretical research with more practical significance.

• The superiority of switched IT2 fuzzy control in ease of successfully coordinating the individual components of the hybrid grid-connected generation system and operating in a dynamically stable way subordinating to the given patterns.

摘要

•IT2 fuzzy is first developed to hybrid grid-connected generation and it can represent more universal nonlinear systems for region fuzzy membership functions in comparison to subsistent literatures on type-2 fuzzy or T-S fuzzy.•The paper designs an IT2 fuzzy controller which can actually add substantially to the stability of the system, enhancing robustness to disturbance and dynamic performance in dealing with time delays.•We first apply switched model to simulate hybrid grid-connected generation system and it can approach the physical truth well, which makes the theoretical research with more practical significance.•The superiority of switched IT2 fuzzy control in ease of successfully coordinating the individual components of the hybrid grid-connected generation system and operating in a dynamically stable way subordinating to the given patterns.