Abstract
A technique for reconstructing motor line current using information from a single current transducer in the DC-link of an inverter is presented. All the instantaneous motor line currents can be reconstructed with a bandwidth limited to half the inverter switching frequency. These waveforms are used to produce a high-bandwidth signal, proportional to the scalar magnitude of the line current, and which is suitable for motor control purposes. A simple, low-cost implementation of the scheme demonstrates accurate results in a practical motor drive.
| Original language | English |
|---|---|
| Pages (from-to) | 196-204 |
| Number of pages | 9 |
| Journal | IEE Proceedings B: Electric Power Applications |
| Volume | 136 |
| Issue number | 4 |
| Publication status | Published - Jul 1989 |