Abstract
This paper deals with sensorless vector control of PWM-inverter-fed induction motor drives equipped with a three-phase diode rectifier. An electronically controlled braking resistor across the dc link is not used. Instead, the power regenerated during braking is dissipated in the motor while a dc-link over-voltage controller limits the braking torque. Losses in the motor are increased by an optimum flux-braking controller, maximizing either the stator voltage or the stator current depending on the speed. Below the rated speed, the braking tunes are comparable to those achieved using a braking resistor. The proposed braking scheme is very simple and causes no additional torque ripple. Experimental results obtained using a 2.2 kW induction motor drive show that the proposed scheme works well.
| Original language | English |
|---|---|
| Title of host publication | IEEE Industry Applications Conference |
| Subtitle of host publication | 40th IAS Annual Meeting |
| Place of Publication | Hong Kong |
| Pages | 1066-1072 |
| Volume | 2 |
| DOIs | |
| Publication status | Published - 2 Oct 2005 |
| MoE publication type | A4 Conference publication |
Keywords
- capacitance
- capacitors
- DC link
- flux braking
- induction motor drives