Adaptive current control for grid-connected converters with LCL-filter
- Resource Type
- Conference
- Authors
- Massing, Jorge Rodrigo; Stefanello, Marcio; Grundling, Hilton Abilio; Pinheiro, Humberto
- Source
- 2009 35th Annual Conference of IEEE Industrial Electronics Industrial Electronics, 2009. IECON '09. 35th Annual Conference of IEEE. :166-172 Nov, 2009
- Subject
- Signal Processing and Analysis
Power, Energy and Industry Applications
Robotics and Control Systems
Computing and Processing
Programmable control
Adaptive control
Current control
Voltage control
Pulse width modulation converters
Steady-state
Damping
Resonance
State feedback
Analytical models
- Language
- ISSN
- 1553-572X
This paper presents a discrete-time adaptive current controller for grid-connected voltage source PWM converters with LCL-filter. The main attribute of the proposed current controller is that, in steady state, the damping of the LCL resonance does not depend on the grid characteristic since the adaptive feedback gains ensure a predefined behavior for the closed-loop current control. Simulation and experimental results are presented to validate the analysis and to demonstrate the good performance of the proposed controller for grid-connected converters subjected to large grid impedance variation and grid voltage disturbances.