Abstract:
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A complicating aspect in the control design of resonant
inductive power transfer systems is the absence of a direct
communication link between primary and (multiple) secondary
system sides. This paper introduces a new adaptive sliding-mode
control surface, which continuously adapts the inductive system’s
input power to the required, but unknown, variable load power.
As a result, an indirect communication link is redundant. Furthermore,
due to matching input and output power, optimum
relative system efficiency is automatically guaranteed in the entire
system’s output power range. The controller design, which has a
simple analog implementation, has been verified with a dual-load
experimental contactless system. |