Development of High Efficiency/Output External Combustion Engine and Advocation of Application to Biomass Power Generation System

Abstract: Power generation using dielectric elastomer (DE) artificial muscle is attracting attention because of its light weight, low cost, and high efficiency. Since this method is a system that produces electricity without emitting carbon dioxide nor using rare earths, it would contribute to the goal of environmental sustainability. In this paper, the background of DEs, the associated high-efficient wave energy generation (WEG) systems that we developed using DEs, as well as the latest development of its material are summarized. By covering the challenges we face and the achievements that we’ve reached, we can discuss the opportunities to build the foundation of a recycled energy society through the usage of these WEGs. On the other hand, to make these possibilities commercially successful, the advantages of DEs need to be integrated with traditional technologies. To achieve this, we also consider the method of using DEs alone and a system used in combination with an oscillating water column. Finally, the current status and future of DEGs are discussed.

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Variable DC-Link Voltage Control of Dual Active Bridge Converter in a Standalone Wind Power Generation System for High-Efficiency Battery-Discharging Operation

Energies ◽

10.3390/en14206786 ◽

2021 ◽

Vol 14 (20) ◽

pp. 6786

Author(s):

Yuto Takayama ◽

Hiroaki Yamada

Keyword(s):

Power Generation ◽

High Efficiency ◽

Power Conversion ◽

Voltage Control ◽

Wind Power Generation ◽

Generation System ◽

Dual Active Bridge ◽

Power Generation System ◽

Simulation Results ◽

Peak Value

In this study, we deal with a dual active bridge (DAB) converter-based battery charger in a standalone wind power generation system (WPGS) with a small-scale wind turbine. However, the power conversion efficiency under the low power output in the discharging mode is low. In this paper, we propose variable DC-link voltage control in a standalone WPGS with a DAB converter under a light load. The proposed control can compensate for the shortage of generated power and suppress the peak value of the transformer current. Simulation results demonstrate that the proposed control can decrease the peak value of the transformer current and improve the power conversion efficiency of the DAB converter. An experimental setup was constructed to confirm the basic operation of the variable DC-link voltage control. In addition, a reference DC-link voltage switchover control is proposed to enable a high-efficiency drive under all load ranges. From simulation results, the power loss can be reduced by the switchover control of the reference DC-link voltage.

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Full solar-spectrum power-generation system based on high efficiency and wide spectral splitter film and Fresnel lens

IEEE Access ◽

10.1109/access.2021.3119287 ◽

2021 ◽

pp. 1-1

Author(s):

Dong Wang ◽

Houzhi Cai ◽

Ou Yang

Keyword(s):

Power Generation ◽

High Efficiency ◽

Solar Spectrum ◽

Fresnel Lens ◽

Generation System ◽

Power Generation System

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A Simulation System of Wind Turbine Based on Labwindows

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.530-531.943 ◽

2014 ◽

Vol 530-531 ◽

pp. 943-951

Author(s):

Zhi Gang Hua ◽

Guang Yu Hu ◽

Zhi Gong Wu ◽

Yong Jie Zhai ◽

Yu Jia Huo

Keyword(s):

Power Generation ◽

Wind Turbine ◽

Wind Power ◽

High Efficiency ◽

Wind Power Generation ◽

System Structure ◽

Stable Operation ◽

Direct Drive ◽

Generation System ◽

Power Generation System

Wind energy is the worlds fastest growing renewable energy source in recent years, and it has drawn worldwide attention. Due to high efficiency, simple topology and stable operation, variable speed constant frequency (VSCF) direct-drive wind power generation system using permanent magnet synchronous generator (PMSG) is the development trend and one of the focuses of wind power generation system research. The paper introduces the trend of the development wind power generation and the recently research stage on the wind power generation. Based on the VSCF power fundamental principle, the dissertation analyzes the strategy of wind turbine simulation. In the development of wind power generating system, the wind turbine emulator becomes more and more important because it can provide controllable wind turbine characteristics. Simplified mathematical model based on the CT-λ curve is constructed, the system structure and emulation method are analyzing. Hardware and software are designed and implemented, and a laboratory set-up is building which based on DC motor. Experimental results show that the wind turbine emulator is as good as expected.

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