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This paper presents a new micro-inverter topology that is intended for single-phase grid-connected PV systems. The features of the proposed topology are: (1) eliminating the double-frequency power ripple using small film capacitor; (2) improving the maximum-power-point tracking (MPPT) performance; (3) using long life-time film capacitors, which will improve the reliability of the inverter; and (4)...
In this paper, a high efficiency, low profile design of distributed transformers (DT) for grid-tied photovoltaic (PV) inverter is presented. The proposed DTs fully integrated into the dual-flyback converter maximize the DC/DC stage efficiency in whole load conditions. The developed DTs with the built-in current sensing transformer allows the converter works in boundary conduction mode (BCM) or discontinues...
In this paper, we report a concept of integrating a monolithic buck converter power IC with in-package bondwire inductors. The power IC was designed and fabricated with a standard 0.5μm CMOS process. Multi-turn bondwires with and without ferrite epoxy glob cores are used as the filter inductor in the buck converter. A 2.5V/120mA prototype system in package (SiP) buck converter is built to operate...
This paper demonstrates the implementation of field-oriented control and rotor current estimation of an induction machine. A mathematical model was developed in Matlab/Simulink. A control system was implemented on a three-phase wound field induction motor to confirm the proposed method and estimated rotor currents. A dSPCAE embedded real time controller is used to implement the control and experimental...
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