Indirect Output Voltage Control in Negative Output Elementary Super Lift Luo Converter Using PIC plus FLC in Discontinuous Conduction Mode

Abstract

In this paper, the design of a proportional integral controller (PIC) plus fuzzy logic controller (FLC) for the negative output elementary super lift Luo converter (NOESLLC) operated in discontinuous conduction mode (DCM) is presented. In spite of the many benefits viz. the high voltage transfer gain, the high efficiency, and the reduced inductor current and the capacitor voltage ripples, it natured with non-minimum phase. This characteristic makes the control of NOESLLC cumbersome. Any attempt of direct controlling the output voltage may erupt to instability. To overcome this problem, indirect regulation of the output voltage based on the two-loop controller is devised. The savvy in the inductor current control improves the dynamic response of the output voltage. The FLC is designed for the outer (voltage) loop while the inner (current) loop is controlled by the PIC. For the developed −19.6 V NOESLLC, the dynamic performances for different perturbations (line, load and component variations) are obtained for PIC plus FLC and compared with PIC plus PIC. The study of two cases is performed at various operating regions by developing the MATLAB/Simulink model.

Analysis of Dual-Driven Feed System Vibration Characteristics Based on Computer Numerical Control Machine Tools: A Systematic Review

“…In addition, a digital signal processor (DSP), and the control system, were used to build an adaptive and robust control approach with a disturbance observer for a motor tracking control application [125,126]. Numerous researchers have been motivated to combine these control strategies to highlight the evident benefits of sliding mode control (SMC) and FLC in nonlinear systems [127][128][129]. The control method incorporating FLC and SMC is intended to mitigate the drawbacks of the sliding mode yet preserve the guarantees of uniform global stability.…”

“…Symmetry 2023, 15, x FOR PEER REVIEW 17 of 23 motivated to combine these control strategies to highlight the evident benefits of sliding mode control (SMC) and FLC in nonlinear systems [127][128][129]. The control method incorporating FLC and SMC is intended to mitigate the drawbacks of the sliding mode yet preserve the guarantees of uniform global stability.…”

Design of Hybrid Posicast Control for Super-Lift Luo Converter

“…where A, B, C, and D are FPOSLLC state-space averaged matrices and δ is duty cycle. e transfer function (small signal) model of FPOSLLC and eliminating R i in (4), ( 5), (6), and ( 7) is expressed as…”

“…e developed controller, on the other hand, produced zero overshoot and required only 0.014 s to settle through the transient state for the same converter. e operation of an FPOSLLC in CCM with a Fuzzy Logic Controller (FLC) and a Sliding Mode Controller (SMC) is described in detail [6]. Despite this, in the transient operating state, this FPOSLLC with controller has produced a settling time of 0.006 s.…”