An FPGA-based modified adaptive PID controller for DC/DC buck converters

作者：Lv Ling; Chang Changyuan^*; Zhou Zhiqi; Yuan Yubo

来源：Journal of Power Electronics, 2015, 15(2): 346-355.

DOI：10.6113/JPE.2015.15.2.346

• Adaptive PID controller
• Control parameters
• DC/DC buck converter
• Differential coefficient
• Dynamic performance
• MA-PID
• Steady state
• Steady-state and dynamic performance

On the basis of the conventional PID control algorithm, a modified adaptive PID (MA-PID) control algorithm is presented to improve the steady-state and dynamic performance of closed-loop systems. The proposed method has a straightforward structure without excessively increasing the complexity and cost. It can adaptively adjust the values of the control parameters (Kp, Kiand Kd) by following a new control law. Simulation results show that the line transient response of the MA-PID is better than that of the adaptive digital PID because the differential coefficient Kdis introduced to changes. In addition, experimental results based on a FPGA indicate that the MA-PID control algorithm reduces the recovery time by 62.5% in response to a 1V line transient, 50% in response to a 500mA load transient, and 23.6% in response to a steady-state deviation, when compared with the conventional PID control algorithm.

• 出版日期2015
• 单位东南大学