Điều khiển dự báo nhanh bộ chỉnh lưu 3 bậc diode kẹp có cân bằng áp tụ DC và giảm tần số chuyển mạch

Tóm tắt

The paper presents model predictive control (MPC)
with fast-computation combined with delay
compensation to balance capacitor voltage and reduce
switching frequency for the three-level (3L) diodeclamped rectifiers. First, the reference voltage vector
is established from the mathematical model of the
system in a discrete domain. Next, the candidate
switching state vectors are selected based on the
position of the reference vector. Finally, the optimal
switching state is selected to minimize the global cost
function. A comparative investigation shows that the
proposed method gives better performance than the
conventional method.