Robust Step-up DC/AC conversion with a Full-Bridge Non-Inverting Buck-Boost

Abstract

Abstract-The substitution of the original switches by a full-bridge in a Non-Inverting Buck-Boost converter results in an inverter capable of performing step-down and step-up tasks under sliding mode control. Furthermore, semi-infinite programming techniques are used to minimize power loses while preventing control action saturation. The performance of the inverter is shown to be robust in front of load perturbations. The procedure assumes known bounds for the disturbances, as well as full state knowledge. Realistic simulations validate the proposed scheme.

Linear Robust Output Regulation in a Class of Switched Power Converters

“…In this article we address the robust output regulation problem for a family of nonlinear power converters with two control switches that includes the NonInverting Buck-Boost NIBB , the Watkins-Johnson WJ , the Inverse of Watkins-Johnson IWJ and the Full-Bridge NonInverting Buck-Boost FBNIBB . The NIBB, the WJ and the IWJ are among the class of eight elementary single-input i.e., possessing a single voltage source singleoutput converters containing a single inductor 7 , while the FBNIBB is derived through the substitution of the original switches by a full-bridge in a NIBB 7,8 . The converters being nonlinear, the first thought may be to face the problem by means of nonlinear output regulation techniques. However, performing a change of control variable the resulting system appears to be linear.…”