This paper present a MATLAB-SIMULINK model of a single phase 2.5 KVA, 240V RMS controlled PV VSI (Photovoltaic Voltage Source Inverter) inverter using IGBTs (Insulated Gate Bipolar Transistor). The behavior of output voltage, output current, and the total harmonic distortion (THD), with the variation in input dc blocking capacitor (Cdc), for linear and non-linear load has been analyzed. The val...

iii Summary This master thesis describes the development of a new type RF PA and upconverter combination. Instead of the normally used voltage steering the amplifier uses charge steering. The parasitic capacitances of the MOSFET in combination with using charge steering form a feedback network that linearizes the amplifier. The developed device is a switching amplifier. For good behavior it use...

This paper proposes a one-dimensional (1D) maximum power point tracking (MPPT) design which only requires measurement of one parameter (the input voltage switched-capacitor charge pump) for calibrating converter including the pump and thermoelectric generator. The frequency clock to drive is designed minimize circuit area entire generating target output current at specific voltage. ratio capaci...

A piezoelectric/magnetostrictive composite vibrating energy generator is introduced, and its output characteristic is analyzed. In order to increase the maximum output power of the vibrating energy harvester, a new up-conversion matching circuit is proposed, which can change the low frequency vibrating signal into a narrow bandwidth signal focused on a higher frequency. The matching circuit wit...

A capacitive wireless power transfer (C-WPT) system uses an electric field to transmit power through a physical isolation barrier which forms a pair of ac link capacitors between the metal plates. However, the physical dimension and low dielectric constant of the interface medium severely limit the effective link capacitance to a level comparable to the main switch output capacitance of the tra...

A capacitor is formed when a level-sensing electrode is installed in a vessel. The metal rod of the electrode acts as one plate of the capacitor and the tank wall (or reference electrode in a non-metallic vessel) acts as the other plate. As the level of the material being measured rises, the air or gas normally surrounding the electrode is displaced by the material’s different dielectric consta...

A new organization of switched capacitor charge pump circuits based on voltage doubler structures is presented in this paper. Each voltage doubler takes a DC input and outputs a doubled DC voltage. By cascading n voltage doublers the output voltage increases up to 2 times. A two phase and a multiphase voltage doubler structures are proposed and their properties discussed. The multiphase voltage...

Multilevel inverters, including the flying-capacitor topology require more complex control due to the additional flexibility offered by the multiple output voltage levels. One such control method is based on the conventional sinusoidal pulse width modulation (SPWM) scheme and uses multiple triangular carriers. There are a number of SPWM variants that achieve the desired inverter control. This p...

The paper presents three different computational schemes for achieving space vector pulse width modulation, in the control of a multilevel flying capacitor inverter. Each scheme uses the same method of achieving cell-capacitor voltage balancing. Results of realistic simulations are used to compare and contrast these approaches. The timing control of the inverter switches and output performance ...