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- W2889442918 abstract "An 1.1 kW-induction machine and an 1.5 kW-permanent magnet synchronous machine (PMSM) are investigated, measuring the common-mode bearing currents in dependence of rotor speed. Both machines are fed by an IGBT-voltage source inverter at $pmb{V}_{mathbf{DC}}=mathbf{560 V}$ DC link voltage. The parasitic high frequency machine capacitances are analytically calculated. The stator winding-to-frame capacitances are also measured. The 1.1 kW-induction machine shows at low speed $(pmb{n} resistive bearing currents, at medium speed (900 rpm $ rpm) electrical discharge machining (EDM) bearing currents and at high speed above 2250 rpm capacitive dvldt bearing currents. The highest average peak-to-peak EDM bearing current is $pmb{I}_{mathbf{b},mathbf{pk}-mathbf{pk},mathbf{NDE}}approx 1$ A at non-drive end (NDE) and medium speed. With a Hertz'ian contact area $pmb{A}_{mathbf{Hertz}}=mathbf{0.21 mm}^{2}$ the apparent bearing current density $pmb{J}_{mathbf{b}}$ is 2.4 A/mm2• Thus it will probably reduce significantly the bearing life time. The 1.5 kW-PMSM shows mainly EDM bearing currents over almost the complete speed range $(mathbf{0} rprn $)$ with average peak-to-peak bearing currents of 0.1 A at drive end. The peak-to-peak bearing current of the resolver bearina is 300% higher. With a Hertz'ian contact area $pmb{A}_{mathbf{Hertz}}=mathbf{0.04 mm}^{2}$ the apparent bearing current density there is $pmb{J}_{mathbf{b}}=mathbf{4.7 A}/mathbf{mm}^{2}$ . This high value will also reduce significantly the resolver bearing life time." @default.
- W2889442918 created "2018-09-07" @default.
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- W2889442918 date "2018-06-01" @default.
- W2889442918 modified "2023-09-30" @default.
- W2889442918 title "Comparison of a 1.1 kW-induction machine and a 1.5 kW-PMSM regarding common-mode bearing currents" @default.
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- W2889442918 doi "https://doi.org/10.1109/speedam.2018.8445298" @default.
- W2889442918 hasPublicationYear "2018" @default.
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