| title: | Research of energy change in electrical drive with supercapacitor |
|---|---|
| reg no: | ETF6175 |
| project type: | Estonian Science Foundation research grant |
| status: | accepted |
| institution: | Tallinn Technical University |
| head of project: | Tõnu Lehtla |
| duration: | 01.01.2005 - 31.12.2007 |
| description: | The main problem of variable speed and variable torque machines with electrical drive is low effectiveness and essential energy losses on the reason of a) incorrect control and contra-dictionary control demands of different drive components and whole system, b) lacking of energy change for acceleration and deceleration processes or lifting and lowering processes of drive moving masses; c) imperfect energy change between drive and supply systems. Therefore the energy losses of different variable speed and variable torque drives reach up to 20...60 % of consumed energy. Regardless of diversity of modern drives from many firms, the problem of energy change in electric drive is still very urgent. The possible solution for higher effectiveness is the flexible control of energy flow between different components of electric drives and using of energy storages inside the drive converter or in power supply source. New challenge in the field of electrical drives are super-capacitors (capacitance of super-capacitors reach up to thousands of farads and stored energy of capacitors blocks reach up to several kilowatt hours. Because of this, using of super-capacitors in drives and machines with variable speed and variable torque, or in drives with energy recuperation, is very urgent, specially, if short time high power operation is needed. Main purpose of this grant application is research of drives with integrated super-capacitors in drive's power converters or in their power supply sources; development of control algorithms for drive acceleration-deceleration and speed-torque control processes, if the super-capacitor energy storage is used and higher efficiency of the drive system. The research work is based on the modelling of energy change processes in electrical drive with super-capacitor energy storage. Optimal voltage range and capacitor charge and discharge cycles as a function of drive operation mode will be determined. The experimental research includes the development of laboratory equipment (drive power converter with super-capacitor storage and test stand for research of drive different operation modes (acceleration, deceleration and reverse). Also common energy storage for multiple drives and energy change between different drives will be studied. The results of this research work can be used for the development of different machines and drives with higher efficiency of energy use, specially in traction drives for transport machines (trams, trolleybuses, electric cars, movable robots, etc.), drives of lifting machines (cranes and robots), and several types of variable speed-torque machines. As a presumption for this work, department of electrical drives and power electronics has corresponding competence, super-capacitors from Maxwell Company, experience in the field of modern high power electrical drives (tram traction drives) and international cooperation with many European Universities and firms. |
| project group | ||||
|---|---|---|---|---|
| no | name | institution | position | |
| 1. | Vitali Boiko | Tallinn Technical University | Research Engineer | |
| 2. | Juhan Laugis | Tallinn Technical University | Professor | |
| 3. | Madis Lehtla | Tallinn Technical University | researcher | |
| 4. | Tõnu Lehtla | Tallinn Technical University | Professor | |
| 5. | Liisa Liivik | Tallinn Technical University | lecturer | |
| 6. | Argo Rosin | Tallinn Technical University | Researcher | |
| 7. | Dmitri Vinnikov | Tallinn Technical University | Research Engineer | |