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NOVEL DIGITAL CONTROLLER FOR INDUCTION MACHINES CONSIDERING THE INVERTER SWITCHING TIMES AND A FLUCTUATING DC-LINK VOLTAGE
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| Author(s) |
Thomas Kalker; Ansgar Ackva; Uwe Jansen |
| Abstract |
A novel digital controller for variable speed drive applications with the PWM-inverter-fed induction machine is presented. The controller which is designated to provide the inverter-switching signals for switching frequencies of up to 20 kHz consists of an especially designed pulse pattern generator (PWM-ASIC) and a microcontroller. In a second part of the paper the influences of the transistor switching times and an oscillating DC-link voltage on the drive performance are analyzed and suitable compensation techniques are presented. This compensation leads to a linearization of the open-loop transfer function of the inverter. Measured results obtained from a test drive prove that the effects mentioned above can be compensated using the proposed techniques. |
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| Filename: | Unnamed file |
| Filesize: | 2.517 MB |
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| Type |
Members Only |
| Date |
Last modified 2019-07-31 by System |
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