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| Title: | Extended operation of flying capacitor multilevel inverters | |
| Author (s): | Jing Huang Corzine, Keith | |
| Department/Lab Affiliations: | Electrical and Computer Engineering Power Systems Laboratory Real-Time Power and Intelligent Systems Laboratory | |
| Keywords: | Converter capacitor voltage balancing flying capacitor flying capacitor multilevel inverters inverter invertors joint-phase redundancy control modulation indices motor drive operation motor drives multilevel power capacitors power factors reactive power reactive power transfer rectifier static VAr compensators static Var compensation switching convertors transistor switching states voltage balancing | |
| Issue Date: | 2006 | |
| Publisher: | Institute of Electrical and Electronics Engineers | |
| Citation: | Jing Huang; Corzine, K.A., "Extended operation of flying capacitor multilevel inverters" IEEE Transactions on Power Electronics, vol.21, no.1 pp. 140- 147, Jan. 2006 | |
| Abstract: | Recent research in flying capacitor multilevel inverters (FCMIs) has shown that the number of voltage levels can be extended by changing the ratio of the capacitor voltages. For the three-cell FCMI, four levels of operation are expected if the traditional ratio of the capacitor voltages is 1:2:3. However, by altering the ratio, the inverter can operate as a five-, six-, seven-, or eight-level inverter. According to previous research, the eight-level case is referred to as maximally distended (or full binary combination schema) since it utilizes all possible transistor switching states. However, this case does not have enough per-phase redundancy to ensure capacitor voltage balancing under all modes of operation. In this paper, redundancy involving all phases is used along with per-phase redundancy to improve capacitor voltage balancing. It is shown that the four- and five-level cases are suitable for motor drive operation and can maintain capacitor voltage balance under a wide range of power factors and modulation indices. The six-, seven-, and eight-level cases are suitable for reactive power transfer in applications such as static var compensation. Simulation and laboratory measurements verify the proposed joint-phase redundancy control. | |
| Type: | Article - Journal text | |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. FULL COPYRIGHT INFORMATION: | |
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| title | Extended operation of flying capacitor multilevel inverters | |
| contributor.author | Jing Huang | |
| contributor.author | Corzine, Keith | |
| contributor.deptlab | Electrical and Computer Engineering | |
| contributor.deptlab | Power Systems Laboratory | |
| contributor.deptlab | Real-Time Power and Intelligent Systems Laboratory | |
| subject | Converter | |
| subject | capacitor voltage balancing | |
| subject | flying capacitor | |
| subject | flying capacitor multilevel inverters | |
| subject | inverter | |
| subject | invertors | |
| subject | joint-phase redundancy control | |
| subject | modulation indices | |
| subject | motor drive operation | |
| subject | motor drives | |
| subject | multilevel | |
| subject | power capacitors | |
| subject | power factors | |
| subject | reactive power | |
| subject | reactive power transfer | |
| subject | rectifier | |
| subject | static VAr compensators | |
| subject | static Var compensation | |
| subject | switching convertors | |
| subject | transistor switching states | |
| subject | voltage balancing | |
| date.issued | 2006 | |
| date.submitted | 2007 | |
| publisher | Institute of Electrical and Electronics Engineers | |
| identifier.citation | Jing Huang; Corzine, K.A., "Extended operation of flying capacitor multilevel inverters" IEEE Transactions on Power Electronics, vol.21, no.1 pp. 140- 147, Jan. 2006 | |
| identifier.issn | 0885-8993 | |
| identifier.pub.URI | ||
| description.abstract | Recent research in flying capacitor multilevel inverters (FCMIs) has shown that the number of voltage levels can be extended by changing the ratio of the capacitor voltages. For the three-cell FCMI, four levels of operation are expected if the traditional ratio of the capacitor voltages is 1:2:3. However, by altering the ratio, the inverter can operate as a five-, six-, seven-, or eight-level inverter. According to previous research, the eight-level case is referred to as maximally distended (or full binary combination schema) since it utilizes all possible transistor switching states. However, this case does not have enough per-phase redundancy to ensure capacitor voltage balancing under all modes of operation. In this paper, redundancy involving all phases is used along with per-phase redundancy to improve capacitor voltage balancing. It is shown that the four- and five-level cases are suitable for motor drive operation and can maintain capacitor voltage balance under a wide range of power factors and modulation indices. The six-, seven-, and eight-level cases are suitable for reactive power transfer in applications such as static var compensation. Simulation and laboratory measurements verify the proposed joint-phase redundancy control. | |
| type | Article - Journal | |
| type.DCMIType | text | |
| type.status | Final version | |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. | |
| rights.URI | ||
| date.accessioned | 2007-04-05T14:25:47Z | |
| date.available | 2007-04-05T14:25:47Z | |
| identifier.persist.URI | ||
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