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DC-link Voltage Balance in AC/DC/AC Multilevel Converters
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| Author(s) |
M. Marchesoni; M. Mazzucchelli; F. V. P. Robinson; P. Tenca |
| Abstract |
The DC-link capacitor voltage balancing problem in Multi Point Clamped (MPC) power converters is simplified when an MPC rectifier and an MPC inverter are used together. However, it is not widely appreciated that even than automatic capacitor voltage balancing is not achieved and a modified PWM strategy must be used. It is shown analytically that AC/DC/AC MPC converters, under the control of standard PWM modulation strategies, rarely give correct balance and that this may be reliably achieved by implementing a balancing strategy. The derived generalized model has been verified by comparing results with those for converters with specific numbers of output levels. |
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| Filename: | EPE1999 - PP00834 - Marchesoni.pdf |
| Filesize: | 263.2 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-04-08 by System |
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