Abstract
In an open-loop V/f controlled high-power low-voltage induction motor drive, sub-harmonic oscillations are commonly observed, especially at light-load and low-frequency operation, because of the dead-time which is introduced to avoid shoot-through in the dc-bus of the inverter. In this paper, such oscillations due to dead-time have been studied and substantially reduced by using a simple and effective dead-time compensation method. A two-step soft-starting method has also been proposed to achieve a fast acceleration of high-power motors without exceeding the current protection limit of the inverter. Experiments have been performed on a 355 kW squirrel cage induction motor drive supplied by a 500 kVA Si-IGBT based voltage source inverter. The steady-state and dynamic performances of the drive with these methods have been successfully verified by apposite experimental results.
| Original language | English |
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| Title of host publication | ICPEE 2021 - 2021 1st International Conference on Power Electronics and Energy |
| Number of pages | 6 |
| Publisher | IEEE Signal Processing Society |
| Publication date | 2 Jan 2021 |
| Article number | 9358493 |
| ISBN (Print) | 978-1-7281-8775-4 |
| ISBN (Electronic) | 978-1-7281-8774-7 |
| DOIs | |
| Publication status | Published - 2 Jan 2021 |
| Event | 1st IEEE International Conference on Power Electronics and Energy, ICPEE 2021 - Virtual, Bhubaneswar, India Duration: 2 Jan 2021 → 3 Jan 2021 |
Conference
| Conference | 1st IEEE International Conference on Power Electronics and Energy, ICPEE 2021 |
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| Country/Territory | India |
| City | Virtual, Bhubaneswar |
| Period | 02/01/2021 → 03/01/2021 |
| Series | ICPEE 2021 - 2021 1st International Conference on Power Electronics and Energy |
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Bibliographical note
Publisher Copyright:© 2021 IEEE.
Keywords
- Dead-time compensation
- induction motor drive
- pulse-width modulated voltage source inverter
- soft-starting