Abstract
Commutation angle is a key design criterion when brushless DC (BLDC) motors sensorlessly operate based on the detection of back electromotive force (EMF) zero-crossing and must be designed significantly less than 30 electrical degree. The paper describes a detailed investigation on the commutation angle of brushless DC motors with 120° voltage source inverter. Analytic method is applied to analyze the influence factors. The proposed design principles can provide a clear guide for the adjustment of system parameters. Then two criteria and an estimation method based on approximate anlytical solution of commutation angle are presented with experimental validation.
| Original language | English |
|---|---|
| Pages (from-to) | 219-225 |
| Number of pages | 7 |
| Journal | International Journal of Applied Electromagnetics and Mechanics |
| Volume | 45 |
| Issue number | 1-4 |
| DOIs | |
| State | Published - 2014 |
Keywords
- 120° voltage source inverter
- Commutation angle
- analytic analysis
- brushless DC motor
- criteria
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