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This paper proposes a self-tuning controller for a multi-level inductive Electric Vehicle (EV) battery charger application. By controlling the energy injection frequency of the Inductive Power Transfer (IPT) system, multiple charging levels (4 in number) are achieved. Maximum performance is leveraged by the proposed IPT system using its capability of self-tuning the switching operations to the natural...
This paper presents the design and implementation of a power supply unit for zone-less induction cook-top. Here a control algorithm is also presented for tracking the user activity which includes misalignment of pan above the coil and removal of pan. The control algorithm is implemented using a DSP processor. The power supply consists of a power stage, control stage, and digital control algorithm...
In this paper, the design of a proportional resonant (PR) controller for the packed U cell (PUC) 5 level inverter is presented. The objective of the presented work is to present a better solution for current control in grid connected application of the investigated topology. A suitable LCL filter is designed along with the PR control scheme for grid connection. Simulation is performed in MATLAB®/Simulink...
Present electromagnetic contactless energy transfer systems (CET) powering vibrational actuators in vibration assisted rotary machining are designed for drive systems operating at one frequency. Such systems are composed of a resonant actuator, a CET system and compensation circuits and are matched to the resonance frequency to optimize power efficiency and reduce size. In this work a design concept...
Tightly controlled power electronic converters connected to a DC microgrid behave as Constant Power Loads (CPLs) and they have the potential to induce voltage oscillations at the DC bus. These oscillations become more probable in the presence of lightly damped L-C filters at the input of CPLs. The oscillations can be damped by inserting appropriate virtual impedances in the DC microgrid. It has been...
The capacitor voltage of an LC-filtered voltage source inverter is fed back for output-voltage regulation, which includes twin aspects of command tracking and output impedance control. The same feedback can also be used for active damping of filter resonance. Compared with the existing active damping techniques using filter inductor or capacitor current feedback, this technique saves a current sensor...
This paper presents a Resonant Converter with high frequency transformer(HF) magnetizing inductance (Lm) considered as shunt inductance. The resonant network comprises of series branch (Ls&Cs) and shunt branch (Lp&Cp). Shunt branch inductance (Lp) of resonant converter is used as magnetizing inductance of HF transformer. HF transformer is designed in such a way that Lm is equal to Lp which...
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