Abstract
PWM inverter induction motor drives with capacitive DC links are becoming more common. Using circuit analysis, physical measurement and numerical simulation, the paper investigates the generation of power-system harmonics by the PWM drive. It is shown that its harmonic characteristics differ from other nonlinear power-system loads and the drive can be more accurately represented as a voltage rather than a current type of harmonic source. This has implications for both analytic harmonic evaluation and practical filter design. In the paper, a modulation function model is developed which can be used to assess the impact of a PWM drive on a power system, when only limited design data are available. © IEE, 1998.
| Original language | English |
|---|---|
| Pages (from-to) | 293-299 |
| Number of pages | 7 |
| Journal | IEE Proceedings: Generation, Transmission and Distribution |
| Volume | 145 |
| Issue number | 3 |
| Publication status | Published - 1998 |
Keywords
- Modelling
- Nonlinear systems
- Power systems and plant
- Vollage-lype harmonic sources
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