Unipolar voltage-cancellation control of resonant inverters for induction cooking appliances

IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200) Pub Date : 1998-08-31 DOI:10.1109/IECON.1998.724199

F. Monterde, J. Burdío, P. Hernandez, J.R. Garcia

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引用次数: 13

Abstract

Generally, power inverters for induction cooking appliances are controlled by varying frequency to control current through the inductor coil. When more than one power converter is operated at different frequencies greater than audible noise upper threshold, low frequency interharmonics are generated in common impedance due to nonlinear effects. Suppression of audible noise in multiple-coils induction cookers leads to high-performance fixed-frequency control. This paper presents a new unipolar voltage-cancellation control for series resonant inverters. This control strategy is used in full-bridge topologies for induction cookers, allowing fixed frequency control with ZVS operation over a wide power range. Performance of current-mode and voltage-cancellation is improved. This control is implemented in a series-resonant full-bridge inverter for induction cookers using IGBTs and digital control implemented in a PLD which can be easily implemented in an ASIC for mass production.

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感应炊具用谐振逆变器的单极电压抵消控制

一般来说，用于感应烹饪器具的功率逆变器是通过改变频率来控制通过电感线圈的电流。当多个功率变换器在大于可听噪声上阈值的不同频率下工作时，由于非线性效应，在共阻抗中产生低频间谐波。抑制多线圈感应炊具的可听噪声导致高性能的固定频率控制。提出了一种新的串联谐振逆变器单极电压对消控制方法。这种控制策略用于电磁炉的全桥拓扑，允许在宽功率范围内使用ZVS操作的固定频率控制。提高了电流模式和电压消除的性能。该控制是在使用igbt的感应炊具串联谐振全桥逆变器中实现的，并且在可编程逻辑器件中实现数字控制，可以轻松地在ASIC中实现大规模生产。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200)

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