title: Analysis of a dc bus system with a nonlinear constant power load and its delayed feedback control.
abstract: This paper tackles a destabilizing problem of a direct-current (dc) bus system with constant power loads, which can be considered a fundamental problem of dc power grid networks. The present paper clarifies scenarios of the destabilization and applies the well-known delayed-feedback control to the stabilization of the destabilized bus system on the basis of nonlinear science. Further, we propose a systematic procedure for designing the delayed feedback controller. This controller can converge the bus voltage exactly on an unstable operating point without accurate information and can track it using tiny control energy even when a system parameter, such as the power consumption of the load, is slowly varied. These features demonstrate that delayed feedback control can be considered a strong candidate for solving the destabilizing problem.
authors.affiliation: Department of Electrical and Information Systems, Osaka Prefecture University and 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
authors.forename: Keiji
authors.initials: K
authors.lastname: Konishi
authors.affiliation: Department of Electrical and Information Systems, Osaka Prefecture University and 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Sugitani
authors.affiliation: Department of Electrical and Information Systems, Osaka Prefecture University and 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Hara
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005246:Feedback; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D011210:Power Plants / Q000295:instrumentation*