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This paper presents a modular approach to differential power processing. The method combines the series differential power processing approach with the parallel differential power processing approach, allowing scalability that could not be achieved previously. The modular approach is demonstrated for photovoltaic systems. Furthermore, the ability to add groups of solar modules in series or parallel...
Confronted with severe environment issues, large scale utilization and development of wind energy and solar energy that are regenerative, non-pollution, green and clean, the best way for power generation and grid synchronization of distributed energy is to develop intelligence micro-grid. Amongst micro-grid, batteries will be connected with super capacitors to form hybrid energy storage system. Batteries...
In the above paper, the author presents a new methodology for designing and implementing high-efficiency broadband Class-E power amplifiers (PAs) using a high-order low-pass filter-prototype. The designed broadband class-E PA achieves a state-of-the-art performance compared to recently published results. However, an error has been found, which will be clarified in this Letters.
A triple-band compact antenna fed by coplanar waveguide (CPW) suitable for indoor communication is presented in this paper. The proposed structure is the combination of a complementary split-ring resonator (CSRR) and a left-handed transmission line (LHTL). The CSRR, working in quarter-wave monopole mode, contributes the first two operating frequency bands, which are further broadened by an additional...
Starting from a transient equivalent model of a triple-break 126 kV vacuum circuit breaker (VCB) containing a dielectric reignition criterion, the reignition current waveform of the vacuum interrupter (VI) which took over the higher part of the transient recovery voltage (TRV) was simulated. A series damped resistor was added in the grading capacitor branch to extinguish the reignition current as...
To keep the uniform distribution of the transient recovery voltage (TRV) across each vacuum interrupter (VI) is very important for the breaking capability of double-break vacuum circuit breakers (VCBs). According to the transient equivalent circuit of double-break VCBs, a mathematical model describing the TRV distribution characteristics was established; it revealed that the bias of TRV distribution...
A low power high speed Read-Out Integrated Circuit (ROIC) for a short-wave Infra-Red Focal Plane Array (IRFPA) is designed as a prototype for 1024 times 1024 image system. Ripple integration and readout scheme as well as highly efficient power management are introduced to this design in order to decrease total power. To further increase the readout speed while decrease the power dissipation, a novel...
A low power Read-Out Integrated Circuit (ROIC) for a short-wave Infra-Red Focal Plane Array (IRFPA) is designed as a prototype for 1024??1024 image system. Ripple integration and readout scheme as well as highly efficient power management is introduced to this design in order to decrease total power dissipation. To overcome the charge sharing problem caused by this low power readout scheme, novel...
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