Direct modelling of envelope dynamics in resonant inverters - Electronics Letters
نویسندگان
چکیده
Introduction: High-frequency DC-AC inverters as the LCC inverter shown in Fig. 1 are used in a variety of applications including electronic ballasts and induction heating. Input variations in both the bus voltage (amplitude modulation, AM) and the switching frequency (frequency modulation, FM) result in amplitude variations at the load. A common objective is to model the AC dynamics from input modulation to output envelops to facilitate optimised controller design [1–3]. In this Letter, general expressions are provided to model the envelope dynamics in a resonant inverter. The final transfer functions obtained through this approach retain a strong physical relationship to the transfer function of the original resonant tank and significantly simplify the controller design.
منابع مشابه
Direct Modeling of Envelope Dynamics in Resonant Inverters
This paper provides a direct dynamic modeling approach for envelope signals in resonant inverters driven by modulated inputs (AM or FM). Based on the sinusoidal approximation, this approach decomposes the modulated input into its fundamental component plus two dominant sidebands. The system response is then found by the summation of the responses to the three individual inputs. Following this c...
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