The future of automotive electrical systems

Kassakian, J.G.; Wolf, H. C.; Miller, John M.; Hurton, C.J.

doi:10.1109/pet.1996.565904

Cited by 29 publications

(12 citation statements)

References 4 publications

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“…Wire harnesses are made to be physically robust and to survive assembly into the car by demanding techniques such as thread and pull. This means that there is a minimum wire gauge that is used to ensure mechanical integrity, typically AWG 22 (0.35 mm 2 ) [16].…”

Section: Automotive Wire Harness and Automotive Fpc Constructionmentioning

confidence: 99%

Design and construction of large-area flexible printed-circuit automotive electrical interconnection harnesses

Webb

Jaggernauth

Cottrill

et al. 2010

Proceedings of the Institution of Mechanical Engineers, Part D:

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The replacement of automotive wiring harnesses with large-area flexible printed circuits (FPCs) would help to reduce the vehicle weight and emissions. To help clarify what a future large-area FPC interconnection harness should be capable of, a detailed design exercise to meet the engineering specification of the instrument panel wiring harness of a specific midrange passenger car was carried out. To demonstrate the added value of using an FPC, intelligence in the form of active circuitry was incorporated in the designs. Two generic architectural concepts were pursued. The first, a single large-area FPC, supported the wire harness geometry, all point-to-point interconnections, and current ratings up to 4 A. However, the panel size was too large to be manufactured on existing automotive FPC process lines. The second, intended to be a collection of smaller FPCs that could be manufactured on existing automotive FPC process lines, was found not to be practical as originally conceived. A physical implementation of the single large-area FPC design was made in stages at different company sites using various pieces of equipment, some of which are not normally used for FPC or electrical circuit manufacture. Modified versions of the equipment could be used to create a large-area automotive FPC manufacturing line.

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Section: Automotive Wire Harness and Automotive Fpc Constructionmentioning

confidence: 99%

Design and construction of large-area flexible printed-circuit automotive electrical interconnection harnesses

Webb

Jaggernauth

Cottrill

et al. 2010

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…This represents one piston-cylinder combination, where is the angle of rotation of the crank about its centerline, is the radius of the crank, is the length of the connecting rod, is the linear displacement of the piston, and is the cylinder bore diameter. To begin with, the indicated torque, , as a function of crankangle can be expressed as (1) where It is important to include the crankangle-varying engine inertia to properly model the dynamics of the crankshaft torque. The slider crank geometry gives rise to two effects: an inertia value which is a function of the angle and a LaGrangian term proportional to the partial derivative of the inertia and the square of crankshaft speed [4].…”

Section: Ice Modelmentioning

confidence: 99%

“…NTEGRATED starter alternators (SAs) provide greater electrical generation capacity and improve the fuel economy and emissions of hybrid electric vehicles [1]. The integrated SA is coupled to the combustion engine either directly or by a belt.…”

mentioning

confidence: 99%

Engine torque ripple cancellation with an integrated starter alternator in a hybrid electric vehicle: implementation and control

Davis

Lorenz

2003

IEEE Trans. on Ind. Applicat.

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Abstract-Integrated starter alternators (SAs) provide greater electrical generation capacity and the fuel economy and emissions benefits of hybrid electric automotive propulsion. The drive usually comprises a field-oriented induction motor or vector-controlled permanent-magnet motor coupled to the crankshaft of the engine directly or by a belt. These drives have high-bandwidth torque control and may be used for active cancellation of the significant ripple torque inherent in internal combustion engines. This paper presents an analytical model useful for the analysis of the combustion engine torque and describes a control system that uses observer-based high-fidelity torque feedforward and engine speed feedback to generate a disturbance input decoupling torque command for the SA to cancel the engine torque ripple.Index Terms-Active flywheel, engine model, engine torque, hybrid vehicle, integrated starter alternator (SA), observer, torque cancellation.

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“…The ISA system combines both starter and generator functions in a single electric machine, instead of having two separate machines, as is the case in conventional vehicles [1][2][3][4]. This innovative solution has been proposed as solution to implement the new PowerNet architecture in vehicles, an increase of the electrical bus voltage from 14V to 42V [5][6][7], and to replace the conventional Lundell alternator which is not able to meet the requirements of high power and voltage transients. In this context, the machine selection and design are being investigated intensively.…”

Section: Introductionmentioning

confidence: 99%

Vector Control of Double Excited Synchronous Machine as Integrated Starter-Alternator

2014

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Original scientific paperThe paper proposes a double excited synchronous machine as integrated starter-alternator for future automobiles applications. Particularly, the biaxial excitation synchronous machine (BESM) is proposed for its high efficiency and wide constant power speed range. As the integrated starter-alternator system combines both starter and generator functions in a single electric machine, an alternative vector control strategy for BESM is developed and detailed to allow operation in the two modes at unity power factor operation by setting d-axis current to be zero and q-axis current to be constant and equal to its value that cancel the q-axis flux. In such conditions, the BESM torque can be controlled by the dc-excitation current and the required dc-bus voltage can be regulated within the 42V PowerNet specifications. To overcome the slowness dc-excitation current response, which is due to higher dc-field excitation time constant, and to increase the torque response quickness, the control of the magnetising current is proposed instead of the d-axis current. Implementation and simulation results validate the proposed scheme and provide a practical solution for an integrated starter-alternator.Key words: Biaxial excitation synchronous machine, Vector control, Integrated starter-alternator, 42V PowerNet Vektorsko upravljanje dvostruko pobu enim sinkronim strojem kao integriranim starteromalternatorom. U radu je predložena upotreba dvostruko pobu enog sinkronog stroja kao integriranog starteraalternatora, za buduće primjene u automobilskoj industriji. Preciznije, predložena je upotreba biaksijalno pobu enog sinkronog stroja (BESM) zbog visoke korisnosti i širokog raspona područja konstantne snage. Kao integrirani starter-alternator, sustav kombinira funkcije i startera i generatora u jednom električnom stroju. Razvijen je i detaljno opisan alternativni pristup vektorskom upravljanju BESM-om za omogućavanje rada u dva moda uz jedinični faktor snage postavljanjem d-osi struje u nulu i q-osi struje na konstantnu vrijednost koja poništava tok u q-osi. U ovakvim uvjetima, BESM momentom moguće je upravljati istosmjernom uzbudnom strujom i traženi napon dc-sabirnice moguće je regulirati unutar 42V PowerNet specifikacija. Za prevladavanje sporog odziva na istosmjernu uzbudnu struju koji nastaje zbog veće vremenske konstante magnetskog polja uzbude, a s ciljem ubrzanja odziva momenta, predloženo je upravljanje strujom magnetizacije umjesto strujom u d-osi. Implementacijski i simulacijski rezultati potvr uju predloženi pristup i pružaju praktično rješenje za integrirani starter-alternator.Ključne riječi: Biaksijalno pobu eni sinkroni stroj, vektorsko upravljanje, integrirani starter-alternator, 42V PowerNet

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The future of automotive electrical systems

Cited by 29 publications

References 4 publications

Design and construction of large-area flexible printed-circuit automotive electrical interconnection harnesses

Design and construction of large-area flexible printed-circuit automotive electrical interconnection harnesses

Engine torque ripple cancellation with an integrated starter alternator in a hybrid electric vehicle: implementation and control

Vector Control of Double Excited Synchronous Machine as Integrated Starter-Alternator

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