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This paper proposes an adaptive neural-fuzzy inference system (ANFIS) based maximum power point tracking (MPPT) system for a photovoltaic (PV) power generating system in standalone operation. To extract the maximum power, the DC-DC buck/boost converter is connected between the PV module and the load. The proposed ANFIS-based MPPT controller performs the fast dynamic response with high accuracy. With...
Magnetically-coupled resonant wireless power transfer (MCR-WPT) has been a research focus in recent years. Multiple transmitters are employed to improve efficiency in a wide area. In this paper, the MCR-WPT system with two transmitters supplied by the same source is modeled and its equivalent circuit is depicted. The mutual inductance between the two transmitters is considered. Proper connection of...
Contactless power transfer (CPT) system is widely used in high power occasion recently. The characteristics of movable loosely coupled transformer (MLCT) in CPT system have powerful influences to the performance of whole system. This paper studies a kind of CPT system with multi-primary multi-secondary contactless transformer. By establishing the equivalent circuit of CPT system, this paper analysis...
This paper presents a nonlinear adaptive magnetic equivalent circuit (MEC) of an axial-flux interior permanent magnets (AFIPM) machine with double-stator/single-rotor and 18-slots/16-poles. Using a quasi 3-D MEC, the magnetic flux density is calculated in the different parts of the machine, as well as the flux linkage, the back electromotive force (EMF) and the electromagnetic torque. The influence...
This paper proposes a novel non-zero sequence choke and analysis of its characteristics when applied as an EMI filter to reduce the common-mode voltage in the PWM inverter. The non-zero sequence choke behaves like an inductor only in the differential-mode circuit, but it has zero impedance in the common-mode circuit. When it is used in series with the capacitors as the EMI filter, the differential-mode...
The parameters of a permanent split-capacitor single-phase induction motor can be estimated by conducting the DC test, blocked rotor test and no-load test which later can be used to facilitate the prediction of motor torque-speed characteristics. To improve further its performance, an exact motor model is simulated and investigated in 2D finite element analysis under influence of different capacitor...
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