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This paper propose a novel single-phase interleaved bi-directional inverter topology. The bi-directional inverter can operate in the grid connection mode (GC) or the power factor correction mode (PFC). The Interleaved Inverter have several advantages such as the increase of the power capacity, the reduction of the current ripple, the decentralized power switching component losses and heat dissipation...
This paper proposed a novel inductive coupling power transfer (ICPT) topology to improve the power factor, output voltage regulation and efficiency. The proposed ICPT is mainly constructed by a voltage controllable power factor corrector (VC-PFC) and a LLC resonant circuit. Additionally, the series compensation and series-parallel compensation are used in the primary and the secondary sides of the...
This paper gives a detailed analysis and discussion of the flow field inside the type of D125 MOCVD reactor chamber through the analysis of three-dimensional mathematical model and calculation. Under a wide range of geometric and process parameters, such as varying total flow rate of gas inlet, chamber pressure, growth temperature, and wafer carrier rotation. It is finally obtained the favorable conditions...
Negative ions technology has been widely used to deal with air pollution problems in recent years. In this paper, a negative ions generating circuit is designed for dealing with the exhaust gas from vehicles. In the high electric field, the air is ionized. The number of active particles increases in the air. These particles react with the exhaust gas, and clean the air. The circuit analysis and simulation...
A high efficiency wind power converter, mainly constructed by the proposed duty boundary condition boost converter (DBC-BC) is proposed in this paper. It can work in the high efficiency duty cycle to effectively increase the efficiency of wind power converter. A 3kW prototype is designed and implemented to assess the performance of the proposed DBC-BC. Experimental results show that a wind power converter...
A systematic computational fluid dynamic (CFD) study was performed to investigate the effects of operating parameters of chamber pressure and wafer carrier rotation rate on the GaAs/AlGaAs deposition rate and uniformity in vertical rotating disc metal organic chemical vapor deposition (MOCVD) reactors. It is shown that significant improvement of the reactors efficiency can be achieved by finding the...
A novel high efficiency Current-Shared Photovoltaic Power System (CS-PPS), mainly constructed by the Maximum Power Point Tracking and Power Conditioning System (MPPT-PC), is proposed in this paper. The proposed MPPT-PC can track the MPPT and regulate the load energy condition at the same time for increasing the circuit efficiency and providing stable power to critical loads. A 200W prototype is designed...
In this paper, analysis and design for a dual-boost single-phase active power factor corrector with one cycle control (OCC) is presented. The dual boost topology combines rectification and power factor correction (PFC) together. Only one of the two power switches is operated respectively during each positive or negative half line cycles. The controller employs the one-cycle-control strategy, which...
Electric pulse field methods are wildly used in biotechnology and industrial applications. A pulse generator (PG) is the device that provides the desired electric pulse field. In this paper, a novel ac-powered PG (ACPG) that is directly powered by normal ac power (i.e., utility power) is proposed. Since there is no high-voltage dc power supply in the proposed ACPG, the circuit complexity and cost...
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