Operating Conditions Monitoring for High Power Density and Cost-Effective Resonant Power Converters

Abstract

Resonant power conversion is a key enabling technology for many high performance and high efficiency systems. Induction heating is an example of such systems which outperforms conventional heating technologies, leading to a wide spectrum of industrial, domestic, and medical applications. In order to ensure the proper operation of the resonant converter, accurate converter operation monitoring techniques are required. This paper proposes an effective monitoring technique based on the measurement of the resonant capacitor voltage. The proposed monitoring system provides essential information regarding the output power, soft-switching conditions, and input voltage, while featuring a cost-effective implementation. The proposed technique is validated through an FPGA-controlled resonant power converter applied to induction heating, proving the feasibility of this proposal. 0885-8993 (c)

Soft-Stop Optimal Trajectory Control for Improved Performance of the Series-Resonant Multiinverter for Domestic Induction Heating Applications

“…This topology is able to supply several induction heating coils with high efficiency and adequate output power control [22], and a reduced component count. However, when designing the SR-MI there are still several design challenges that must be addressed to obtain a reliable and high performance implementation.…”