Abstract
In this paper a model of a three-phase inverter drive will be presented that is suitable for inclusion in a DC distribution system analysis. It will be shown that the drive can be accurately modeled on the electrical side by a capacitor, representing the bus capacitance of the inverter, in parallel with a current source. The current source consists of a DC component, corresponding to net power flow to and from the flywheel, plus high-frequency current harmonics generated by the operation of the switch-mode inverter. Closed-form expressions for the current harmonics can be derived by analyzing the AC currents in the electric machine and the switch-mode nature of the inverter, including the "dead-time" effect, and will be presented in the paper. Comparisons between edge-based and center-based pulse-width operation suggest that center-based PWM produces less harmonic content. It is shown that "dead-time" can have a significant effect on the harmonic content. Experimental results taken on a three-phase inverter with an inductive load validate the presented model.
| Original language | English (US) |
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| DOIs | |
| State | Published - Dec 1 2002 |
| Event | Power Systems Conference - Coral Springs, FL, United States Duration: Oct 29 2002 → Oct 31 2002 |
Other
| Other | Power Systems Conference |
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| Country/Territory | United States |
| City | Coral Springs, FL |
| Period | 10/29/02 → 10/31/02 |
All Science Journal Classification (ASJC) codes
- Automotive Engineering
- Safety, Risk, Reliability and Quality
- Pollution
- Industrial and Manufacturing Engineering