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Wiring Harness Optimization towards Wireless Vehicle

Eicher Motors Limited-Nikhil Baluja
  • Technical Paper
  • 2019-28-2530
To be published on 2019-11-21 by SAE International in United States
Paper Title - Wiring Harness Optimization towards Wireless vehicle Research and/or Engineering Questions/Objective (maximum 100 words)  In current scenario, wiring harness plays a vital role in inter-connecting electrical & electronic components fitted all across the vehicle.  As per cable standard, DIN 72551 or ISO 6722, copper conductors being used in stranded wires against cable cross-section & corresponding weight.  While going complete wire-less requires each component to have its own battery, ground, transmitter & receiver which indeed is a very costly affair to be employed in vehicle as huge development cost is required.  Here I'm suggesting an innovative method to make a vehicle apparently Wire-Less by creating local clusters connected to each other via conventional wiring harness & wire-less module.  Such method will apparently give a look of Wire-less vehicle itself & better advantages in terms of installation, service, troubleshooting, uptime & customer delight.  Moreover, direct benefits of Cost, Weight, FE will also be achieved. Methodology (maximum 150 words) # To start with this technology, I've divided it in different…
 

Implementation and Experimentation of effective clog removal method in tractors for enhanced condenser life and Air Conditioning performance during Reaper application

Mahindra & Mahindra, Ltd.-Gurpreet Singh, Prabhakaran Arumugam, Rakesh Sharma
Mahindra Research Valley-Shreekant Srivastava
  • Technical Paper
  • 2019-28-0015
To be published on 2019-10-11 by SAE International in United States
Implementation and Experimentation of effective clog removal method in tractors for enhanced condenser life and Air Conditioning performance during Reaper application Keywords - Tractor HVAC, Condenser clogging, Trash removal method. Research and/or Engineering Questions/Objective Tractors in the field are exposed to adverse operating conditions and are surrounded by dust and dirt. The tiny, thin and sharp broken straw and husks surround the system in reaper operation. The tractors which are equipped with air conditioning system tend to show detrimental effects in cooling performance. The compressor trips frequently by excess pressure developed in the system due to condenser clogging and hence cooling performance is reduced considerably. The air conditioning performance reduces due to the clogged condenser located on the top roof compartment of operator's cabin, which is still better design than keeping in front of radiator where clogging happens every hour and customer need to stop the tractor to clean it with specific blower. Since we designed package of condenser on the top of the roof where heavy particles won't reach easily so, condenser choking/clogging every…
 

Simulation Analysis of Single-Phase Matrix Converter for Cycloconverter operation using SPWM with under and over modulation Technique

SRM Institute Of Science And Technology-Kalaiarasi Nallathambi, Anitha Daniel, Uthra Rangarajan
  • Technical Paper
  • 2019-28-0120
To be published on 2019-10-11 by SAE International in United States
This paper discusses about how the matrix converter performs as a cycloconverter. The MATLAB simulation model of single-phase matrix converter has been developed for cycloconverter operation. The output results of various frequency range and different load conditions with under and over modulation level are discussed. Amongst the major difference to conventional cycloconverter topology, which mainly used thyristors, Matrix converter requires IGBT in its power switches. The performance of matrix converter for cycloconverter operation using the recognized sinusoidal pulse width modulation technique with resistive and inductive load has been discussed
 

Modulation Strategy for Minimisation of Leakage Current in Grid-Connected PV Panels

SRM Institute Of Science And Technology-Anitha Daniel, Uthra Rangarajan, Kalaiarasi Nallathambi
  • Technical Paper
  • 2019-28-0114
To be published on 2019-10-11 by SAE International in United States
This paper presents a switching strategy for the cascaded multilevel H bridge inverter of five levels to reduce the leakage current in the grid connected transformerless PV system. Minimization of the leakage current in solar panels is vital in a transformerless grid connected PV panels. But due to the absence of transformers which provide galvanic isolation, CMV techniques are applied which results in leakage currents from PV panel to ground. This current causes hazards to humans and large currents may lead to fire hazards. The proposed switching strategy reduces the continuous transients at switches, hence avoiding high frequency switching. This switching technique requires only a single modified carrier wave for all 2m+1 levels of operation. The sinusoidal carrier waveform is modified as humped sinusoidal waveform to reduce switching losses. In this paper, the progressed switching strategy has been incorporated to PV fed five level multilevel inverter connected to grid and its effectiveness has been validated.
 

Integrated Silicon Photonic Switch Demonstrates Lowest Signal Loss Ever in High-Speed Data Transmission

  • Magazine Article
  • TBMG-34770
Published 2019-07-01 by Tech Briefs Media Group in United States

Experimental photonic switches developed at UC Berkeley have shown promise toward the goal of fully optical, high-capacity switching for future high-speed data transmission networks. The switch developed and tested for this research demonstrated capabilities not seen before in photonic switches. Key to this success, is the scale-up of a 240 × 240 integrated silicon photonic switch. The device is so-named because it accepts 240 optical communication input channels and sends them into 240 output channels.

 

Marine Electrical Switches

Marine Technical Steering Committee
  • Ground Vehicle Standard
  • J1320_201906
  • Current
Published 2019-06-06 by SAE International in United States
This SAE Recommended Practice covers the requirements for switches used in marine applications both under and over 50 V.
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Fast Accurate Non-Destructive Measurement of Absorber Impedance and Absorption

3M Company-Jon Alexander
Bruel & Kjaer Sound and Vibration A/S-Jason Kunio, Flemming Larsen
Published 2019-06-05 by SAE International in United States
Cabin acoustic comfort is a major contributor to the potential sales success of new aircraft, cars, trucks, and trains. Recent design challenges have included the increased use of composites, and the switch to electrically powered vehicles, each of which change the interior noise spectral content and level. The role of acoustic absorption in cabins is key to the optimisation of cabin acoustic comfort for modern vehicles, with acoustic impedance data needed in order to assess and optimise the impact of each component of a given lay-up.Measurements of absorbing interior trim are traditionally performed using either sample holder tests in a static impedance tube (impedance and absorption), or through tests in reverberation rooms (absorption only). Both of these procedures present challenges. In-tube absorption and impedance measurements are destructive, requiring highly accurate sample cutting and sealing. Reverberation room absorption measurements are subject to the effects of varying room diffusion, along with the impact of edge diffraction, sample geometry, and location. Finally, while non-destructive methods using hand-held probes also measure absorption, they are not able to measure impedance…
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All-Fiber, Optically Controlled Optical Switch

  • Magazine Article
  • TBMG-34622
Published 2019-06-01 by Tech Briefs Media Group in United States

An optical switch is a device where information-bearing light may be directed to one of several outputs. Prior art optical switches have mainly been integrated optical waveguide structures such as titanium-diffused (Ti) waveguides in lithium-niobate (LiNbO3) or gallium-arsenide (GaAs) structures, or other compound semiconductors.

 

ONR Short Pulse Research, Evaluation and non-SWaP Demonstration for C-sUAV Study

  • Magazine Article
  • TBMG-34529
Published 2019-06-01 by Tech Briefs Media Group in United States

The OSPRES (ONR Short Pulse Research, Evaluation and non-SWaP) program performed fundamental work in the areas of Silicon (Si) and Gallium Nitride (GaN) based photoconductive switch development, measurement of HPM waveform dependent effects on small unmanned aerial vehicle (sUAV), adaptive design of experiments, noise injection, RF coupling to sUAV's, minimally dispersive wave theory, and positive feedback non-linear transmission line (NLTL) development.

 

ONR Short Pulse Research, Evaluation and non-SWaP Demonstration for C-sUAV Study

Aerospace & Defense Technology: June 2019

  • Magazine Article
  • 19AERP06_09
Published 2019-06-01 by SAE International in United States

Research project is designed to map small unmanned aerial vehicle (sUAV) effects space, empirically and by simulation, as a function of high power microwave (HPM) waveform to develop effective countermeasures.

The OSPRES (ONR Short Pulse Research, Evaluation and non-SWaP) program performed fundamental work in the areas of Silicon (Si) and Gallium Nitride (GaN) based photoconductive switch development, measurement of HPM waveform dependent effects on small unmanned aerial vehicle (sUAV), adaptive design of experiments, noise injection, RF coupling to sUAV's, minimally dispersive wave theory, and positive feedback non-linear transmission line (NLTL) development.

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