Virginia Tech Intellectual Properties, Inc.

The Vollrath Company, LLC

Jong-Woo Kim

Jih-Sheng Lai

Jeremiah Kopiness

Andrew Amrhein

Moonhyun Lee

The present disclosure describes devices and methods for improving the power efficiency and control of an induction heating system. In particular, the induction heating system includes a series resonant bridge inverter circuit and a control circuit. The inverter circuit includes one or more induction coils that are structured to inductively couple to the cookware to heat the cookware and a current sensor structured to sense a coil current signal across the one or more inductor coils. In particular, the current sensor is structured to generate a positive sensed voltage signal corresponding to a positive portion of the coil current signal and a negative sensed voltage signal corresponding to a negative portion of the coil current. The control signal is structured to control switching of a first and a second set of switches based on the positive and negative sensed voltage signals.

Growing community of inventors

Blacksburg, VA, United States of America

Jong-Woo Kim