H<inf>&#x221E;</inf> integral control of a buck-boost dc-dc converter

Abstract

In this paper H∞ integral control is used to improve the performance of a buck-boost dc-dc power converter based on pulse-width modulation (PWM) techniques. The converter is used to supply a robust, stable negative voltage source to the electrical and electronic systems of next-generation cars, which will have to perform not only under 42V technology, but also with many automotive electrical and electronic systems which have been designed to work under the soon-to-be obsolete 14V technology. Also, here Quality Function Deployment (QFD) techniques are used as tools to better focus on the application of these voltage regulators to the automotive industry and the cost of their implementations. The experimental results are satisfactory.

Controller analysis for active distribution nodes in advanced dc power systems

“…First, the study in [15] assume a linear time-invariant (LTI) model; consequently, the controllers therein do not guarantee the stability except at the nominal operating points. Second, the gain of the H ∞ controller in second order SISO systems (boost [16][17][18] and buck-boost converter [15][16][17]) may be limited because PID controllers usually provide acceptable performance for first and second order systems [18]. Third, addressing parameter uncertainty in SISO systems is generally less complicated than that in MIMO systems because the uncertainty is associated with directionality in the latter.…”