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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Poh Chiang Loh Feng Gao Pee-Chin Tan Blaabjerg, F. |
| Copyright Year | 2007 |
| Description | Author affiliation: Nanyang Technol. Univ., Singapore (Poh Chiang Loh; Feng Gao) |
| Abstract | This paper presents a three-level ac-dc-ac Z-source converter with output voltage buck-boost capability. The converter is implemented by connecting a low cost front-end diode rectifier to a neutral-point-clamped inverter through a single X-shaped LC impedance network. The inverter is controlled to switch with a three-level output voltage, where the middle neutral potential is uniquely tapped from the star-point of a wye-connected capacitive filter placed before the front-end diode rectifier for input current filtering. Through careful control, the resulting converter can accurately produce the correct volt-sec average at its output, while simultaneously achieving inductive voltage boosting. More interestingly, these performance features are achieved with no increase in the number of semiconductor commutations, and hence no increase in switching losses. The proposed converter therefore offers a low cost alternative to sensitive applications that need to ride-through frequent input voltage sags. For confirming the converter performance, experimental testing using a constructed laboratory prototype is performed with its captured results presented in a later section of the paper. |
| Starting Page | 2691 |
| Ending Page | 2697 |
| File Size | 513831 |
| Page Count | 7 |
| File Format | |
| ISBN | 9781424406548 |
| ISSN | 02759306 |
| DOI | 10.1109/PESC.2007.4342443 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-06-17 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Analog-digital conversion Costs Semiconductor diodes Inverters Voltage control Switches Joining processes Rectifiers Impedance Filters |
| Content Type | Text |
| Resource Type | Article |
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