On Control of a Boost DC-DC Power Converter under Constrained Input

Abstract

In this paper, a new controller for a boost DC-DC (direct current to direct current) power converter is proposed. The discussed DC-DC boost converter model considers the losses coming from the inductor and capacitor. The novel control scheme takes into account that the duty cycle is constrained to physically admissible values. The analysis of the closed-loop trajectories provides the conclusion that output voltage regulation is achieved in asymptotic form. In addition, the problem of uncertain supply voltage and unmeasurable inductor current is also addressed by using an observer together with the proposed control law. Our theoretical results are supported by using numerical simulations and experimental tests. Comparisons with respect to known approaches are presented.

A Linear Parameter Varying Control Approach for DC/DC Converters in All-Electric Boats

“…For instance, low voltage battery packages need step-up converters to provide the required voltage for the DC-link of these vehicles [5]. For this reason, while the conventional boost converters are used as an interface circuit in the structure of the EVs and EBs propulsion system, a suitable robust controller is required to guarantee the correct operation of the converters [6][7][8][9][10][11]. e mathematical and black-box analyses of a power converter are two different approaches to design the controllers of the power converters.…”

Intelligent Control Using Metaheuristic Optimization for Buck-Boost Converter

“…Valenzuela and Alarcon proposed the control of a boost DC-DC power converter using the new controller under constrained input, which is the duty cycle, the physically admissible values. Moreover, the uncertain supply voltage and unmeasurable inductor current are used as an observer for the proposed control law [8]. Ortigoza et al used a two-stage control design which performs the sensorless angular velocity trajectory tracking task for the buck power converter/DC motor system.…”

Bounded Control for DC/DC Converters: Application to Renewable Sources

“…Indeed, the technological progress and its rise in complexity of the required tasks, together with an always increasing demand of better performance, requires more advanced control methods. As a result, the development and application of control techniques different from the classic Proportional Integral Derivative (PID) for power converters is a well established research field, and its related literature is continuously enriched [1], [2], [3], [4], [5], [6], [7], [8], [9], [10], [11].…”

“…Although the variety of advanced control results for DC/DC converters, only few of them take into account the physical limitations of the systems and how they impact on the performances and the operating region [4], [9], [11], [12], [13]. To develop an unbounded control law for systems for which large values for the control are prohibited, is quite accepted in literature.…”