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Energies 2017,10, 616
4.ResultsofSimulationsofOW-PMSMDriveSystem
Weran simulationmodels of theOW-PMSMdrive systemon theMatlab/Simulinkplatform.
Thebasicparameters ofOW-PMSMare shown inTable 1 andcontroller parameters are shown in
Table 5. API speedcontrollerwasused togenerate the expected torque tomake themotor speed
followthepresetvalue.
Table5.Parametersofsimulationsettingandcontroller.
ModuleAffiliation Item Parameters
Modelasawhole TimestepTs/s 5×10−7
Inverterdevices On-resistanceRon/Ω 0.01
Forwardvoltagedropof IGBTVf/V 0.8
ForwardvoltagedropofdiodeVfd/V 0.8
Current fall timeTf/s 1×10−6
Current tailing timeTt/s 1.5×10−6
Windingmodecontroller SamplingtimeTs_MS/s 1×10−4
Sensitivitycoefficientof rotorspeed [ksY,ksΔ] [0.9, 0.9]
Sensitivitycoefficientof integral threshold [kIY,kIΔ] [0.35,0.75]
PIcontrollerofmotorspeed SamplingtimeTs_SC/s 1×10−4
ProportionalitycoefficientP 0.4
Integral coefficient I 4
MTPAandfluxweakeningcontroller SamplingtimeTs_CC/s 1×10 −4
Voltagesaturationcoefficientku 0.95
Currenthysteresiscontroller SamplingtimeTs_CR/s 1×10−5
Halfwidthofhysteresisbandh/A 3
Maximumswitchingfrequencyofdevices fmax/Hz 1×104
This simulation’sdurationwas0.9 s. In thisprocess, theexpectedmotor rotaryspeed linearly
increased to5500r/min in0–0.3 sandstayedat5500r/min till 0.6 s. Thenspeed linearlydropped
to 0 in 0.6–0.9 s; loaded torque jumped from0 to50N·mat0.05 s and remained50N·muntil the
simulationfinished. In order tomonitor the results of powerdistribution,we shifted the current
modulationmethodfromlowswitchingfrequencytohighpowerdifferenceat0.4sandswitchedthe
majorpowersource frompowersource1 topowersource2at0.5s.AnotherOW-PMSMdrivesystem
under traditional two-levelcurrenthysteresismodulationwithoutwindingmodeswitchingfunction
wasalsosimulatedforcomparison.
CurvesofexpectedtorqueT∗e , electromagnetic torqueTeofproposedandcontrastmodel, and
rotaryspeednm aredemonstrated inFigure6a–c.
(a) Expected torque and electromagnetic torque of motor
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
time (s)
0
10
20
30
40
50
60
70
80
90
100
electromagnetic torque
expected motor torque
Figure6.Cont.
254
Emerging Technologies for Electric and Hybrid Vehicles
- Titel
- Emerging Technologies for Electric and Hybrid Vehicles
- Herausgeber
- MDPI
- Ort
- Basel
- Datum
- 2017
- Sprache
- englisch
- Lizenz
- CC BY-NC-ND 4.0
- ISBN
- 978-3-03897-191-7
- Abmessungen
- 17.0 x 24.4 cm
- Seiten
- 376
- Schlagwörter
- electric vehicle, plug-in hybrid electric vehicle (PHEV), energy sources, energy management strategy, energy-storage system, charging technologies, control algorithms, battery, operating scenario, wireless power transfer (WPT)
- Kategorie
- Technik