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In this paper, a small signal analysis for tapped inductor converter under the critical conduction mode control (CRM) is presented. Critical conduction mode control is one of the hysteretic current mode controls in variable switching frequency operation. In first, a mathematically-described variable-frequency control modeling method for tapped inductor converters is introduced through extending the...
In this paper, based on the small signal analysis of switching power converters under a hysteretic current mode control, a unified PWM switch model is derived. The model is easy to handle because all manipulations are performed on a circuit diagram which includes simply-described function blocks indicating the physically intuitive relationships among the model parameters. This paper presents two kinds...
In this paper, a simple control method for two-stage utility grid-connected photovoltaic power conditioning systems (PCS) is proposed. This approach enables maximum power point tracking control with post-stage inverter current information instead of calculating solar array power, which significantly simplifies the controller and the sensing part. Furthermore, there is no feedback loop in the pre-stage...
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