Abstract
The paper presents significant aspects of analytical and numerical simulation of a high-frequency converter with voltage-fed inverter, framing in over 10 years preoccupations of the Electric Powers Laboratory from our Technical University. Here some constructive-functional aspects are highlighted and certain computed results are interpreted.The paper deals with the these days trend to use new methods in computer analysis of power electronic circuits and industrial equipments provided with static converters. Taking into account the complexity of electromagnetical phenomena arising in these cases, the preoccupation to elaborate new competitive numerical procedures for the study of the representative signals, in the assumption that the structure parameters and hence the functional conditions are changed, is justified.The paper treats the analytical simulation of a high-frequency voltage-fed inverter for induction heating by input-state-output relations. With a view to numerical simulation, the paper exposes in a summary form, a procedure of local-iterative linearization for the integration of ordinary differential equations and some cautions over the calculation start, according to the initial conditions.On the basis of a computing program, the output signals (load current and voltage) are plotted; some experimental results are also presented. The conclusions highlight the benefits of the method used, representing a first stage in the design of these converters with the aim to frame them in advanced control systems.
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