Abstract
This paper describes a predictive control method for boost DC-DC converters. The conventional predictive control relies on recursive computation and is time-consuming, so it can not be applied directly to switching power supplies such as DC-DC converters. In this paper, we propose a new and analytic predictive control algorithm for boost DC-DC converters. Compared with buck DC-DC converters, the boost convert has a quite different dynamic property. In particular, the undershoot phenomenon poses an obstacle to predictive control over a short horizon. This issue is discussed in detail and a suitable control index is proposed based on this discussion. This algorithm can be implemented on-line. Numerical simulations show that the proposed algorith outperforms the well-known PID-PWM.
