| title: | Research and development of converter with alternating parallel and series resonance controlling active and reactive power in four-quadrant operation mode |
|---|---|
| reg no: | ETF5144 |
| project type: | Estonian Science Foundation research grant |
| subject: |
2.12. Electrical Engineering |
| status: | completed |
| institution: | Tallinn Technical University |
| head of project: | Kuno Janson |
| duration: | 01.01.2002 - 31.12.2005 |
| description: | Despite of broad application of converters there is no satisfactory solution for the problem of higher harmonics and power factor. In Tallinn Technical University original converters with alternation of parallel and series resonance have been developed. These converters have high power factor in the rectifier mode and low factor of harmonics throughout the whole range from no-load to short circuit. They also include parametrical short-circuit withstand. Still the converters are not capable for invertor mode at present. The aim of the project is to develop a network frequency converter with alternating parallel and series resonance, that is able to operate both as a rectifier and as an invertor and the reactive power of which is controllable in inductive as well as in capacitive range. Such converter solves the problem of harmonics and reactive power without additional filters and capacitors in electrical drives, emergency power supply converters with power storage, converter units between AC and DC and other equipment with alternation of power flow direction. Compared to alternative switch mode converters they have higher efficiency, presumable lower cost and they are not a source of electromagnetical pollution. The unit power of such converters is also not limited as for switch mode converters. |
| project group | ||||
|---|---|---|---|---|
| no | name | institution | position | |
| 1. | Kuno Janson | TTU Faculty of Power Engineering | Ass. Prof. | |
| 2. | Jaan Järvik | Tallinn Technical University | Prtof., Head of Department | |
| 3. | Eino Sepping | Tallinn Technical University | Assoc. Prof. | |
| 4. | Toomas Vinnal | Tallinn Technical University | Researcher | |