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| Content Provider | IET Digital Library |
|---|---|
| Author | Maswood, Ali I. Gabriel, Ooi H. P. Ammar, Essam Al |
| Abstract | This study explores the feasibility of an AC/DC/AC drive with near unity power factor front-end rectifier and five-level rear-end multilevel inverter topology with a focus on achieving lower voltage total harmonic distortion and higher energy efficiency. The unity PF front-end rectifier in this AC/DC/AC drive may cause unbalanced voltage in the DC bus capacitors leading to high voltage distortion on the output AC voltage of a rear-end multilevel inverter. Based on the analysis, modelling and experimental results, rear-end multilevel flying-capacitor inverter with unity PF front-end rectifier in an AC/DC/AC power drive is proposed which is able to provide better DC voltage balancing when compared to diode-clamped topology. Having no diode components being used in this multilevel inverter, the flying-capacitor topology produces lesser commutation losses. Furthermore, rear-end multilevel flying-capacitor topology offers better efficiency and good quality output voltage without any bulky and expensive LC filter and even without any additional DC voltage balancing circuitry. The analytical performance of the drive is verified on a 1.3 kW laboratory prototype. |
| Starting Page | 1530 |
| Ending Page | 1543 |
| Page Count | 14 |
| ISSN | 17554535 |
| Volume Number | 6 |
| e-ISSN | 17554543 |
| Issue Number | Issue 8, Sep (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/6/8 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2012.0454 |
| Journal | IET Power Electronics |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | AC-DC/AC Power Drive Commutation Loss DC Bus Capacitor DC Voltage Balancing Diode-clamped Topology Drive Energy Efficiency Five-level Rear-end Multilevel Inverter Topology Harmonic Distortion High Voltage Distortion Invertors LC Filter Lower Voltage Total Harmonic Distortion Multilevel Inverter Near Unity Power Factor Front-end Rectifier Power 1.3 KW Power Converter Power Factor Power Supplies to Apparatus Rear-end Multilevel Flying-capacitor Topology Rectifier Single DC Link Unbalanced Voltage Unity PF Front-end Rectifier |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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