Predictive control has attracted much attention and has been widely used in power\nelectronics and electric drives. However, further developments for applications in the field of\nrenewable energy systems are still under investigation. In this paper, the principles of predictive\ncontrol are studied with a focus on model predictive control (MPC) and vector-sequence-based\npredictive control (VPC). Based on these techniques, two control strategies for flexible power supply\nare developed. They are implemented in the most promising renewable energy systems, namely solar\nphotovoltaic (PV) systems and wind generators, respectively. The experimental results based on\na laboratory prototype show that the active and reactive powers supplied by the PV and wind\ngenerator can be controlled flexibly with excellent steady-state and transient performance. As the\npenetration level of the renewable energy sources in electricity network continues to rise, predictive\ncontrol tends to be an attractive and powerful technique for power electronics converters in renewable\nenergy systems.
Loading....