New “Full-Bridge Buck Inverter–DC Motor” System: Steady-State and Dynamic Analysis and Experimental Validation

Abstract

A mathematical model of a new "full-bridge Buck inverter-DC motor" system is developed and experimentally validated. First, using circuit theory and the mathematical model of a DC motor, the dynamic behavior of the system under study is deduced. Later, the steady-state, stability, controllability, and flatness properties of the deduced model are described. The flatness property, associated with the mathematical model, is then exploited so that all system variables and the input can be differentially parameterized in terms of the flat output, which is determined by the angular velocity. Then, when a desired trajectory is proposed for the flat output, the input signal is calculated offline and is introduced into the system. In consequence, the validation of the mathematical model for constant and time-varying duty cycles is possible. Such a validation of this mathematical model is tackled from two directions: (1) by circuit simulation through the SimPowerSystems toolbox of Matlab-Simulink and (2) via a prototype of the system built by using Matlab-Simulink and a DS1104 board. The good similarities between the circuit simulation and the experimental results allow satisfactorily validating the mathematical model.

Sensorless Tracking Control for a “Full-Bridge Buck Inverter–DC Motor” System: Passivity and Flatness-Based Design

“…4-7) it is concluded that the sensorless passivity-based control, for the angular velocity trajectory tracking task, in the full-bridge Buck inverter-DC motor system achieves the objective, i.e., ω → ω * . Until now, the only experimental work related to the fullbridge Buck inverter-DC motor system, is the one where its mathematical model was developed and experimentally validated [59]. In the experimental tests reported in [59] the four desired trajectories ω * used there were the same ones used in this paper, i.e., ( 25)- (28).…”

“…An application recently developed that uses such a system can be found in [34], where the problem of renewable energy power source based on fuel cells was presented by Chi et al in 2020. Motivated by the benefits of the new "full-bridge Buck inverter-DC motor" system [59]:…”

“…For this aim, a built prototype of the "full-bridge Buck inverter-DC motor" system, Matlab-Simulink, and a DS1104 board from dSPACE are used. 4) To accomplish a revision of the experimental closedloop tracking errors, that are acquired after implementing the proposed ETEDPOF control on the system, and the experimental open-loop tracking errors (obtained in [59]). Such a revision is carried out with the intention of showing how the system in closed-loop is benefited from the ETEDPOF strategy, rather than for comparative purposes.…”

“…According to [59], the average mathematical model of the full-bridge Buck inverter-DC motor system shown in Fig. 1 is given by,…”

Power Converters in Power Electronics: Current Research Trends

“…In addition, the PWM techniques for five-level inverter are presented in [14,15], with a minimal number of commutations. The inverter topology for the DC motor is presented in [16].…”