TY - JOUR
T1 - Quantitative Feedback Design Based Robust PID Control of Voltage Mode Controlled DC-DC Boost Converter
AU - Kobaku, Tarakanath
AU - Jeyasenthil, R.
AU - Sahoo, Subham Swaroop
AU - Ramchand, Rijil
AU - Dragicevic, Tomislav
PY - 2021
Y1 - 2021
N2 - This work addresses the problem of instability occurring in the voltage control mode of a non-minimum phase (NMP) DC-DC boost converter. To solve this instability issue in the presence of uncertainties and the external disturbances, quantitative feedback theory (QFT) is adapted to systematically design a robust proportional integral derivative (PID) controller, which is realized using only sensed output voltage as feedback. The advantages of the proposed PID design using the QFT are: (i) it eliminates the burden of tedious and ad-hoc tuning of PID gains using the conventional PID design approaches, (ii) current measurement is not required, (iii) disturbance dynamics (input voltage and load current variations) are included in the design stage itself, which further enhances the disturbance rejection performance of the output voltage, and (iv) it allows direct design for the non-minimum phase boost converter despite the bandwidth limitations. Extensive simulations and experiments are carried out to validate the efficacy of the proposed PID controller in the presence of the external disturbances and compared its superiority over a conventional PID controller.
AB - This work addresses the problem of instability occurring in the voltage control mode of a non-minimum phase (NMP) DC-DC boost converter. To solve this instability issue in the presence of uncertainties and the external disturbances, quantitative feedback theory (QFT) is adapted to systematically design a robust proportional integral derivative (PID) controller, which is realized using only sensed output voltage as feedback. The advantages of the proposed PID design using the QFT are: (i) it eliminates the burden of tedious and ad-hoc tuning of PID gains using the conventional PID design approaches, (ii) current measurement is not required, (iii) disturbance dynamics (input voltage and load current variations) are included in the design stage itself, which further enhances the disturbance rejection performance of the output voltage, and (iv) it allows direct design for the non-minimum phase boost converter despite the bandwidth limitations. Extensive simulations and experiments are carried out to validate the efficacy of the proposed PID controller in the presence of the external disturbances and compared its superiority over a conventional PID controller.
KW - DC-DC converter
KW - Disturbance dynamics
KW - PID
KW - Quantitative feedback theory
KW - Voltage regulation
U2 - 10.1109/tcsii.2020.2988319
DO - 10.1109/tcsii.2020.2988319
M3 - Journal article
VL - 68
SP - 286
EP - 290
JO - I E E E Transactions on Circuits and Systems. Part 2: Express Briefs
JF - I E E E Transactions on Circuits and Systems. Part 2: Express Briefs
SN - 1549-7747
IS - 1
ER -