TY - JOUR
T1 - Experimental Verification of Robust PID Controller under Feedforward Framework for a Non-Minimum Phase DC-DC Boost Converter
AU - Kobaku, Tarakanath
AU - Jeyasenthil, R
AU - Sahoo, Subham
AU - Dragicevic, Tomislav
PY - 2021/6
Y1 - 2021/6
N2 - This work addresses the disturbance rejection problem of a non-minimum phase DC-DC boost converter operating in the continuous conduction mode (CCM) using a novel robust PID controller design method. The proposed idea is to design the controller using the equivalent feedforward formulation of the modified direct synthesis (MDS) approach. The advantages of the proposed MDS design are (i) systematic incorporation of disturbance dynamics and the converter dynamics explicitly in the controller design to reduce the complex tuning effort of the controller parameters, (ii) allowing the converter to operate close to the performance limit set by the zero in the right half plane (RHP), (iii) the closed-loop performance specifications can be incorporated into the desired loop response using only single tuning parameter based on Bode’s gain cross-over frequency inequality, (iv) attenuates the loop gain to improve the disturbance rejection and (v) realization of controller requires only output voltage as a feedback signal. The strength of the proposed MDS method is compared with the internal model control (IMC) method in both simulations and experiments. Based on these responses, the proposed PID ensures robust performance to the model-plant mismatch and allows the output voltage to quickly recover back to the operating voltage in the presence of external disturbances with less inductor current.
AB - This work addresses the disturbance rejection problem of a non-minimum phase DC-DC boost converter operating in the continuous conduction mode (CCM) using a novel robust PID controller design method. The proposed idea is to design the controller using the equivalent feedforward formulation of the modified direct synthesis (MDS) approach. The advantages of the proposed MDS design are (i) systematic incorporation of disturbance dynamics and the converter dynamics explicitly in the controller design to reduce the complex tuning effort of the controller parameters, (ii) allowing the converter to operate close to the performance limit set by the zero in the right half plane (RHP), (iii) the closed-loop performance specifications can be incorporated into the desired loop response using only single tuning parameter based on Bode’s gain cross-over frequency inequality, (iv) attenuates the loop gain to improve the disturbance rejection and (v) realization of controller requires only output voltage as a feedback signal. The strength of the proposed MDS method is compared with the internal model control (IMC) method in both simulations and experiments. Based on these responses, the proposed PID ensures robust performance to the model-plant mismatch and allows the output voltage to quickly recover back to the operating voltage in the presence of external disturbances with less inductor current.
KW - Adaptive control
KW - DC-DC converter
KW - DC-DC power converters
KW - Disturbance dynamics
KW - Modified Direct Synthesis
KW - PID
KW - Sensors
KW - Transfer functions
KW - Tuning
KW - Voltage control
KW - Voltage regulation
UR - http://www.scopus.com/inward/record.url?scp=85088809279&partnerID=8YFLogxK
U2 - 10.1109/JESTPE.2020.2999649
DO - 10.1109/JESTPE.2020.2999649
M3 - Journal article
SN - 2168-6777
VL - 9
SP - 3373
EP - 3383
JO - I E E E Journal of Emerging and Selected Topics in Power Electronics
JF - I E E E Journal of Emerging and Selected Topics in Power Electronics
IS - 3
ER -