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This stage manage system is designed specifically for the integrated-control console of visual-effect equipment. System architecture, functional implementation and technical solution are proposed detailedly in this paper. This system is established based on C/S framework. Data transmission between the stage management console of visual-effect equipment and the integrated-control system is implemented...
A novel supercapacitor module using input-series and output-series configuration of flyback converters is proposed in this paper. First, the working principles under charging and discharging process are analyzed. Second, the design pattern of the flyback converter and the control system of the module are discussed. The proposed control system uses one set of peak current control circuit to control...
This study proposes a Software-Defined Networking (SDN) architecture to help cloud customers receive highly efficient services in a heterogeneous cloud serving system. An application called SDNBroker is designed herein and superposed on the SDN controller by Northbound Application Programmatic Interfaces (Northbound API). When a cloud customer requests a service, the proposed SDNBroker schedules heterogeneous...
This paper concerns the improvements of the isolated symmetry half-bridge bidirectional DC/DC converter when applied in supercapacitor (SC) energy storage system. The guidelines to calculate the ZVS resonance elements were proposed. Meanwhile, a novel model of the converter contains duty ratio as control element was derived. With the model, a phase-shifted plus feed-forward control system was proposed,...
In order to protect insulation of 110kV and 220kV transformer neutral-points without earthing and overcome shortcomings in existing protective measurements such as gaps, metal oxide arresters (MOA, shortly), gaps in parallel with MOA, and so on, a new protective measurement was put forward. A controllable gap was used in parallel with MOA. The controllable gap was made up of a fixed gap in series...
High-power boost converter is an important part in supercapacitor energy storage system. The decline of supercapacitor's terminal voltage should be considered when design the converter. The advantages and disadvantages of the asymmetry half-bridge bidirectional converter are discussed. A novel PWM phase-shift plus feed-forward control method was proposed, which uses input voltage feed-forward to control...
This paper proposes a two-stage structure solar inverter topology with maximum power point tracking capability. The control of the solar inverter is digitally implemented using Freescale DSP56F8346, the dedicated photovoltaic intelligent power modules is used for constructing the power stages. In the design process, the circuit component and its parameters are calculated. A prototype is built in the...
Fuel cells (FCs) are being considered as a potential alternative in long term to replace diesel/gasoline combustion engines in vehicles and emergency power sources. However, high cost and slow dynamic response of FC still persist as the main hurdles for wider applications. To remedy this problem, an energy storage system with adequate power capacity has to be incorporated. This paper presents a novel...
A modular novel bioartificial liver support system was designed and constructed in order to simplify tedious operation of artificial liver treatment and to improve the applicability in the system. The design ideas, structure composition, system function, and etc, were described in detail. In this system, the variety of the therapy modes could be conveniently connected by the interface of modular structure...
According to the characteristics of AC motor, by use of model reference theory, established a mathematical model, and deduced the responding control algorithm. Developed the embedded controller with core of ARM7S3C4510B and expanded interface of A/D and D/A. Achieved a closed-loop control of AC motor speed, and gave the experimental results. Comparing with the corresponding results of PID controller,...
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