Passivity-based control technique for UPS inverters Conference Paper

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Overview

abstract

• This paper presents the design of a passivity-based control for an inverter used in uninterrupt power supplies (UPS). The design of the passivity-based control considers an auxiliar system which describes the desired behavior of the inverter and the global asymptotic stability is proved. Several important requirements such as a sinusoidal output voltage, low total harmonic distortion (THD) and a fast transient response are accomplished with this control scheme. To show the performance of this nonlinear control two experimental applications are used, an UPS with three-phase output of 33kVA and an UPS with two parallel inverters of 1kVA each one with an unbalanced nonlinear load. The experimental results show that the passivity-based control has a better performance than a PI control and together with its simple implementation, they are the main contributions of this work. The implementation is analogical and was built with low-cost hardware. The performance shown in the experimental results is evaluated in real conditions. © 2007 EUCA.

authors

• Cárdenas Galindo Víctor Manuel
• Pazos F.
• Perez-Ladron G.
• Visairo Cruz Nancy

publication date

• 2007-01-01

published in

• 2007 European Control Conference, ECC 2007  Proceedings

Research

keywords

• Asymptotic stability; Electric inverters; Power control; Transient analysis; Experimental application; Fast transient response; Global asymptotic stability; Low cost hardware; Non linear control; Parallel inverter; Passivity based control; Total harmonic distortion (THD); Uninterruptible power systems

Identity

Digital Object Identifier (DOI)

• 10.23919/ecc.2007.7068898

Additional Document Info

start page

• 5734

end page

• 5739