Seite - 337 - in Emerging Technologies for Electric and Hybrid Vehicles

Energies 2017,10, 315 Figure19.Overall circuit schematic for theexperiment. Table4.Measuredvalueofeachcomponents for thecircuit schematicshowninFigure19. Component Symbol Value Source/loadcoil components to matchresonance@20kHz LS 590.00μH RS 170mΩ CS 107.33nF LL 186.15μH RL 103mΩ CL 328.11nF Rectifiersmoothingcapacitor Csmooth 3200μF Low-passfilter (LPF)components RLPF 919Ω CLPF 9.8nF Loadresistance forfirstexperiment (static load) RL 10Ω Loadresistance forsecondexperiment (experimentalvehicle load) RL 2~3Ω (varying loadduetomotoroperation) In thefirstexperiment (static load), the loadcoilwasmovedfrom−8cm(left) to8cm(right) in 1cmincrements. Thechange involtageandcurrentwasmonitoredthroughthevoltmeterandcurrent meter, respectively,andrecorded.Also, thechanges in the loadcoil andsensorcoilvoltagewaveforms weremonitoredthroughtheoscilloscopeaswell. Becausethepowerwasreducedto10Winthesecond experiment (experimentalvehicle load), the loadcoilwasmovedless;−5cm(left) to5cm(right) in 1cmincrements,unlike±8cminthefirstexperiment. Thesensorcoilvoltagewaveformaswellas its converted logic signalsweremonitored through theoscilloscope, and thedetectedvoltageand steeringpositiondatawererecordedthroughthemicrocontroller in theexperimentalvehicle. 4.2. ExperimentalResults fromtheFirstExperiment (StaticLoad: 10OhmResistor) Figure20showsthemeasuredvoltageandcurrentas the loadcoilwasmovedfrom−8cm(left) to8cm(right) in1cmincrements. BasedonFigure20, it canbeseenthat thepower is significantly reducedwhenthelateralmisalignmentincreases,bothfromtherightsideandleftside.Halfof theload 337