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The DC-Link Capacitor Current in Pulsed Single-Phase H-Bridge Inverters
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| Author(s) |
RENKEN Folker |
| Abstract |
In case of controlling a pulsed single-phase H-bridge inverter with two and three voltage levels the capacitor currents in the dc-link circuit are calculated analytically. For these calculations first a sinusoidal modulated voltage and sinusoidal current at the output of the inverter are presupposed. Afterwards the additional load of the dc-link capacitors caused by harmonic currents of the output filter circuit is examined. For this reason the individual harmonics of the dc-link current with sinusoidal and with overlaid harmonic output currents are calculated with help of spectral analysis. At last the influence of the switching processes to the dc-link circuit load is discussed. The theoretically determined currents in the dc-link capacitors are compared with several practical measurements. |
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| Filename: | 0019 |
| Filesize: | 811.5 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-05 by System |
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