Sensorless Passivity Based Control of a DC Motor via a Solar Powered Sepic Converter-Full Bridge Combination

Jeus Linares-Flores; Hebertt Sira-Ramirez; Edel F. Cuevas-Lopez; Marco A. Contreras-Ordaz

Sensorless Passivity Based Control of a DC Motor via a Solar Powered Sepic Converter-Full Bridge Combination

Jeus Linares-Flores

Hebertt Sira-Ramirez

Edel F. Cuevas-Lopez

Marco A. Contreras-Ordaz

Vol. 11, No. 5, pp. 743-750, Sep. 2011

10.6113/JPE.2011.11.5.743

Passivity Based Control

Sensorless control

SEPIC-Full Bridge Converter

Solar cells

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Abstract

This article deals with the sensor-less control of a DC Motor via a SEPIC Converter-Full Bridge combination powered through solar panels. We simultaneously regulate, both, the output voltage of the SEPIC-converter to a value larger than the solar panel output voltage, and the shaft angular velocity, in any of the turning senses, so that it tracks a pre-specified constant reference. The main result of our proposed control scheme is an efficient linear controller obtained via Lyapunov. This controller is based on measurements of the converter currents and voltages, and the DC motor armature current. The control law is derived using an exact stabilization error dynamics model, from which a static linear passive feedback control law is derived. All values of the constant references are parameterized in terms of the equilibrium point of the multivariable system: the SEPIC converter desired output voltage, the solar panel output voltage at its Maximun Power Point (MPP), and the DC motor desired constant angular velocity. The switched control realization of the designed average continuous feedback control law is accomplished by means of a, discrete-valued, Pulse Width Modulation (PWM). Experimental results are presented demonstrating the viability of our proposal.

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Cite this article

[IEEE Style]

J. Linares-Flores, H. Sira-Ramirez, E. F. Cuevas-Lopez, M. A. Contreras-Ordaz, "Sensorless Passivity Based Control of a DC Motor via a Solar Powered Sepic Converter-Full Bridge Combination," Journal of Power Electronics, vol. 11, no. 5, pp. 743-750, 2011. DOI: 10.6113/JPE.2011.11.5.743.

[ACM Style]

Jeus Linares-Flores, Hebertt Sira-Ramirez, Edel F. Cuevas-Lopez, and Marco A. Contreras-Ordaz. 2011. Sensorless Passivity Based Control of a DC Motor via a Solar Powered Sepic Converter-Full Bridge Combination. Journal of Power Electronics, 11, 5, (2011), 743-750. DOI: 10.6113/JPE.2011.11.5.743.