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LOW PWM INVERTER LOSSES AND LOW CURRENT DISTORTION - TWO CONFLICTING CLAIMS SETTLED BY BELLMAN'S DYNAMIC PROGRAMMING
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| Author(s) |
R. Blümel |
| Abstract |
PWM techniques as applied to voltage source inverter-fed induction machines are well established. Even so it can be shown that strictly cutting down the pulse inverters turn-on and turn-off counts during a sampling period does not always lead to minimal switching losses as formerly alleged. Taking care of every single switching and conduction loss whilst maintaining a desired rms current deviation ends up in a nonlinear extreme value problem. To be more specific: Minimizing the expenditure of inverter losses to achieve a desired rms current deviation is the main objective of this paper. Therefore a CAD program utilizing Bellman's Dynamic Programming was developed which solves this problem and returns the optimal current trajectory. A novel model follower is employed to track the system along any given pre-calculated trajectory. |
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| Filename: | Unnamed file |
| Filesize: | 4.679 MB |
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| Type |
Members Only |
| Date |
Last modified 2019-05-15 by System |
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