Energy Saving and Control of a Hybrid Hydraulic Excavator Swing System

Author(s):  
Ying-Xiao Yu ◽  
Kyoung Kwan Ahn

Energy saving can be maximized by rectifying the intermediate conversion processes involved during the utilization of solar energy. The system eliminates the transformation of electrical form of solar energy into another form by directly utilizing its electrical energy in the management and control of power supplies obtained from renewable (solar) and conventional (mains) energy sources. A current control scheme is presented in which current delivered by solar supply is used to control the current in mains supply in such a way that both currents are inversely proportional to each other. Any increment in solar current opposes mains current in the same proportion and vice versa. A balanced common physical output is resulted from the electrical load supplied by each source separately. A natural variation in solar radiation is utilized to fluctuate the solar current which is further used to change the mains current. Energy saving is maximized in this supply management by the optimal utilization of solar energy.


2011 ◽  
Vol 317-319 ◽  
pp. 2473-2476
Author(s):  
Huan Zhang

On the basis of analyzing technology processes and control demands of concrete mixing station, a design of control system for this construction machinery based on SIEMENS S7-300 PLC and eView touch screen was introduced in this paper, including hardware selection, PLC LAD diagram programming and HMI design, etc. All expected demands for weighing, batching, deposit, mixing, unloading, conveying of the whole technology processes of concrete mixing are reached, and a totally automatic production can be realized also. The practical operation verifies that the control system is highly reliable and stable, and it greatly enhances the control accuracy and meets the equipments requirements of energy-saving.


2011 ◽  
Vol 71-78 ◽  
pp. 78-81
Author(s):  
Yun Xue ◽  
Guo Ming Dong ◽  
Hui Xia Wen

China building energy-saving technology is in the early stages of the development with energy high consumption and low energy efficiency. It is especially important to control each link of the building energy-saving for energy conservation. In construction of the envelope structure exists Some prominent effects ,such as the compilation and implementation of the construction technology, the review of design alteration, the performance measurement of materials and components, and control of construction technical measures, we should be implemented related inspection and control in all stages of the implementation process.


2013 ◽  
Author(s):  
Koichi Tabei ◽  
Masashi Watanabe ◽  
Nobuyuki Doi ◽  
Kenjiro Imai ◽  
Stefan Young

Author(s):  
Makoto Iwamura ◽  
Shunichi Imafuku ◽  
Takahiro Kawamoto ◽  
Werner Schiehlen
Keyword(s):  

2011 ◽  
Vol 383-390 ◽  
pp. 5484-5491
Author(s):  
Gui Qing Zhang ◽  
Lin Zhang ◽  
Ming Wang ◽  
Bin Shen ◽  
Cheng Dong Li ◽  
...  

An energy-saving control system for building heating supply system is presented in this paper. Its design and implementation are on the basis of occupancy detection in buildings. By taking advantage of the information fusion technology, the control system will determine human’s location and control the heating equipments automatically according to non-human zone and human zone to realize the energy saving. The information fusion technology fuses three categories of information, which are the people counting information, the infrared sensors information and the RFID information. How to design and implement the heating energy-saving control system is described explicitly in this paper. Since the system has developed with platform concept based on the wireless network and the Internet, it can be used to other building electrical equipment systems with less modification.


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