tailieunhanh - Modern trends in farm machinery-electric drives: A review

The most mechanized agricultural operations include a tractor as a primary power unit, even though the tractor itself is not particularly useful without an implement attached. Innovations and efficiency improvements in tractor engines, powertrains, and auxiliary power systems have been ongoing since tractors were invented a century ago and significant gains have been realized. However, PTO and hydraulic power systems are well established and effective for today‟s applications, the search for more versatile and efficient power transfer continues. One alternative is electric power, which first debuted in 1954 on the Farmall Electrall tractor (Michael, 2012). The recent research suggests electric drives would be suitable and beneficial for almost all the drives on modern agricultural machines, which currently use hydraulic and mechanical power. Electric drive enables variable speeds control; therefore, functions can be operated independently of engine speed and use only the power and energy needed for the given function. ISOBUS, a communication protocol for high voltage power electronics controller networks on agricultural machinery, is a key enabler for advanced controls that take advantage of torque and speed control capabilities of these electric systems. Electric powertrain promises the higher fuel efficiency and better torque-speed control over the mechanical and hydraulic one. Hence, it is inescapable to switch over to electric powertrain so as to meet the forthcoming requirements of sustainable precision agriculture and to reduce the global emission. | 2019 8 1 83-98 EXCELLENT PUBLISHERS International Journal of Current Microbiology and Applied Sciences ISSN 2319-7706 Volume 8 Number 01 2019 Journal homepage http Review Article https Modern Trends in Farm Machinery-Electric Drives A Review Dipak S. Khatawkar1 P. Shaji James1 and D. Dhalin2 department of Farm Machinery and Power Engineering Kelappaji College of Agricultural Engineering and Technology Tavanur India department of Agricultural Engineering College of Agriculture Vellayani India Corresponding author ABSTRACT Keywords Tractor Electric drive ISOBUS Powertrain Article Info Accepted 04 December 2018 Available Online 10 January 2019 The most mechanized agricultural operations include a tractor as a primary power unit even though the tractor itself is not particularly useful without an implement attached. Innovations and efficiency improvements in tractor engines powertrains and auxiliary power systems have been ongoing since tractors were invented a century ago and significant gains have been realized. However PTO and hydraulic power systems are well established and effective for today s applications the search for more versatile and efficient power transfer continues. One alternative is electric power which first debuted in 1954 on the Farmall Electrall tractor Michael 2012 . The recent research suggests electric drives would be suitable and beneficial for almost all the drives on modern agricultural machines which currently use hydraulic and mechanical power. Electric drive enables variable speeds control therefore functions can be operated independently of engine speed and use only the power and energy needed for the given function. ISOBUS a communication protocol for high voltage power electronics controller networks on agricultural machinery is a key enabler for advanced controls that take advantage of torque and speed control capabilities of these electric systems. .