研究目的

Investigating the application of MPC to power electronics by showing that many existing and popular control strategies can be viewed as special cases of MPC and demonstrating how the predictive control framework can be used to design new and advanced control architectures.

研究成果

The paper has presented a generalized MPC framework for designing VSI current controllers. It has shown that many existing controllers can be viewed as special cases of MPC. By establishing the underlying models behind the existing control schemes, this paper has given new insights into their advantages and limitations. It has shown that some performance limitations can be overcome by altering the models. The paper has proposed a new advanced control architecture, which combines improved steady-state and transient reference tracking and disturbance rejection at the fundamental frequency, avoiding instability issues associated with transport delay, and compensation of the tracking delays of both model and implementation nature.

研究不足

The disadvantages of MPC include exponential growth of associated computational burden, reported steady-state error and stability problems. Another issue is the apparent disconnection between MPC and more traditional approaches, which makes it difficult to compare the performance of a vast and growing number of proposed MPC-based schemes.