INDUCTION-HEATING COOKING SYSTEM AND PROCESS FOR CONTROLLING AN INDUCTION-HEATING COOKING SYSTEM

摘要

The present invention provides an induction-heating cooking system, which comprises a first heating coil, at least one second heating coil arranged close to the first heating coil for heating a single heated-subject in cooperation with each other, first and second drive circuitries supplying high-frequency current of the same frequency individually to the first and second heating coils, a first n-th order component extractor (n: natural number) extracting an n-th order drive current component of the drive current through the first heating coil and an n-th order drive voltage component of the drive voltage across the first heating coil, a second n-th order component extractor (n: natural number) extracting an n-th order drive current component of the drive current through the second heating coil and an n-th order drive voltage component of the drive voltage across the second heating coil, and a controller is adapted to calculate load resistance of the first and second heating coils based upon the n-th order drive current components and the n-th order drive voltage components extracted by the first and second n-th order component extractors. The controller of the present invention is adapted to control electric energy supplied from the first and second drive circuitries to the first and second heating coils in accordance with energy allocation ratios which depend upon the calculated load resistance of the first and second heating coils.