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Bearing currents and shaft voltages of an induction motor under hard-and soft-switching inverter excitation (1998)
| Content Provider | CiteSeerX |
|---|---|
| Author | Chen, Shaotang Lipo, Thomas A. |
| Abstract | Abstract—Bearing currents and shaft voltages of an induction motor are measured under hard- and soft-switching inverter ex-citation. The objective is to investigate whether the soft-switching technologies can provide solutions for reducing the bearing cur-rents and shaft voltages. Two of the prevailing soft-switching inverters, the resonant dc-link inverter and the quasi-resonant dc-link inverter, are tested. The results are compared with those obtained using the conventional hard-switching inverter. To en-sure objective comparisons between the soft- and hard-switching inverters, all inverters were configured identically and drove the same induction motor under the same operating conditions when the test data were collected. An insightful explanation of the experimental results is also provided to help understand the mechanisms of bearing currents and shaft voltages produced in the inverter drives. Consistency between the bearing current theory and the experimental results has been demonstrated. Conclusions are then drawn regarding the effectiveness of the soft-switching technologies as a solution to the bearing current and shaft voltage problems. Index Terms — Bearing currents, common-mode currents, common-mode voltages, hard switching, induction machine, induction motor, power converter, pulsewidth modulation inverter, quasi-resonant dc-link converter, resonant dc-link converter, shaft voltages, soft switching. I. |
| File Format | |
| Journal | IEEE Trans. Ind. Applicat |
| Language | English |
| Publisher Date | 1998-01-01 |
| Access Restriction | Open |
| Subject Keyword | Shaft Voltage Induction Motor Hard-and Soft-switching Inverter Excitation Soft-switching Technology Experimental Result Soft-switching Inverter Ex-citation Test Data Inverter Drive Common-mode Voltage Soft-switching Inverter Induction Machine Hard Switching Resonant Dc-link Converter Abstract Bearing Current Resonant Dc-link Inverter Quasi-resonant Dc-link Inverter Conventional Hard-switching Inverter Index Term Soft Switching Shaft Voltage Problem Insightful Explanation Bearing Current Theory Operating Condition Bearing Cur-rents Hard-switching Inverter Power Converter Common-mode Current Pulsewidth Modulation Inverter Quasi-resonant Dc-link Converter En-sure Objective Comparison |
| Content Type | Text |
| Resource Type | Article |
