Adjustable speed drives transportation industry needs part I: automotive

Miller, John M.; Schulz, S.E.; Conlon, Brendan M.; Duvall, Mark; Kankam, M.D.; Nagel, Nick

doi:10.1109/vetecf.2003.1286240

Cited by 7 publications

(4 citation statements)

References 14 publications

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“…In that region, the maximum power occurs at ω m2 = ω m2,rat . Thus, the maximum power in that region is again T m1,rat ω m1,rat (n rat − 1)/n rat [see (9)]. For ω m2 > ω m2,rat , we can use field weakening in the secondary machine, so that the flux is inversely proportional to the rotational speed.…”

Section: B System Ratingmentioning

confidence: 99%

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The electric variable transmission

Hoeijmakers

Ferreira

2006

IEEE Trans. on Ind. Applicat.

167

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Abstract-First, an electromechanical converter with two mechanical ports and one electrical port (consisting of two concentric machines and two inverters) is considered. This converter works as a continuously variable transmission between the mechanical ports and may, e.g., replace the clutch, gearbox, generator, and starter motor in a motor vehicle. The working principle of this converter is explained. Next, a new converter, the electric variable transmission (EVT), is presented. This converter has similar properties, but is smaller and lighter. The EVT may be seen as built up from two concentric induction machines with a combined relatively thin yoke. Thus, we obtain one electromagnetic device instead of two magnetically separated devices. The working principle of the EVT is explained, and its losses are discussed.Index Terms-AC machines, automotive, electromechanical converter, electromechanical transmission, hybrid electric vehicle, vehicle power systems, vehicle propulsion.

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Section: B System Ratingmentioning

confidence: 99%

“…13) is for the case of an acceleration with maximum electric power (9). The losses are about their rated values.…”

Section: Simple Model Of the Evtmentioning

confidence: 99%

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The electric variable transmission

Hoeijmakers

Ferreira

2006

IEEE Trans. on Ind. Applicat.

167

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“…It inherently implements several auxiliary functions that are normally accomplished through the combined use of the gearbox, clutch, and starter-generator [3,4].…”

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confidence: 99%

A Hybrid–Electric Driveline for Agricultural Tractors Based on an e-CVT Power-Split Transmission

et al. 2021

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This paper proposes a full-hybrid driveline based on an electric continuously variable transmission (e-CVT), which is inspired by the car industry’s most successful solution. The paper describes the operating principle, the system architecture, and the control scheme of the proposed driveline. An analysis of four possible operating modes shows that the e-CVT driveline leads to a performance similar to that of conventional tractors, as well as unusual features such as power boost, full-electric mode, optimized auxiliary drive and electric power delivery capability. The compact layout proposed for the e-CVT also makes it possible to simplify the overall layout of the tractor, particularly during the installation of both the thermal engine and the cooling system.

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