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- Grauers, Anders, 1966, et al.
(author)
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PM generator with series compensated diode rectifier
- 2000
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In: Proceedings of the 2000 IEEE Nordic workshop on power and industrial electronics, Aalborg (Denmark). - 8789179293 ; , s. 59-63
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Conference paper (other academic/artistic)abstract
- This paper presents an investigation of a series compensated diode rectifier for permanent magnet generators. Series compensation has the advantage that the reactive power produced by the compensation follows the variations in the generator's reactive power consumption, as the generator currents change. The investigation show good performance at speeds close to rated speed, and show problems of generating high power at low speed. The investigation also shows that series compensation works well in the whole operating range of a wind turbine generator system. However, the behaviour under abnormal operating conditions remains to be studied.
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| 2. |
- Bubenko jr, Janis, et al.
(author)
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Promote IT 2004 : Proceedings of the Fourth Conference for the Promotion of research in IT at New Universities and University Colleges in Sweden, 5-7 May, Karlstad University, The Knowledge Foundation, Part 1 and Part 2
- 2004
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Book (peer-reviewed)abstract
- The Knowledge Foundation of Sweden and Karlstad University are proud to announce the fourth annual conference for promoting research and advanced education in topics of IT at Sweden's new universities and university colleges. The conference takes place at Karlstad University in Sweden, May 5-7, 2004.The conference is in the Foundation's programme for promoting research and advanced education in topics of IT at Sweden's new universities and university colleges. Almost 200 MSEK (about 22 MEUR) has been allocated, for a period of five years, in order to increase the number of IT-teachers with a PhD. degree at Sweden's new universities and university colleges.Since the start of the programme in year 2000, almost one hundred persons are actively pursuing their graduate studies and research at these new universities and colleges. These are the persons that now present their progress at this conference
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| 3. |
- Holmér Pettersson, Pia, et al.
(author)
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Patient-controlled versus nurse-controlled pain treatment after coronary artery bypass surgery
- 2000
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In: Acta Anaesthesiologica Scandinavica. - : Wiley. - 0001-5172 .- 1399-6576. ; 44:1, s. 43-47
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Journal article (peer-reviewed)abstract
- Background: Pain after coronary artery bypass surgery persists for several days. A continuous intravenous infusion of an opioid adequately accomplishes good pain control in the intensive care unit, but it is often not suitable on the ordinary ward. Patient-controlled analgesia (PCA) with intermittent injections delivered by one of the new devices now available could be an alternative to conventional nurse-controlled analgesia (NCA) based on intermittent injections. The aim was to compare these two techniques with respect to efficacy and the amount of opioid used.Methods: Forty-eight patients randomly received PCA or NCA with ketobemidone following extubation after coronary artery bypass grafting. Drug consumption, pain assessment with the visual analogue score (VAS) and possible side effects were evaluated from extubation to the end of the second postoperative day.Results: On the day of surgery the VAS scores did not differ between the groups. From the afternoon of the first postoperative day the VAS scores were higher in the NCA group with mean values at 3–4 out of 10 as compared with mean values around 2 in the PCA group (P<0.01). During the study period the patients in the PCA group received more ketobemidone as compared with the NCA group, 61.9±24.0 mg and 36.3±20.2 mg, respectively (P<0.01). Additional oral analgesics were used in 12 of the patients in the NCA group compared with none in the PCA group. The few side effects reported were equally distributed between the two groups.Conclusion: PCA treatment after coronary artery bypass surgery resulted in better pain treatment and the use of more opioid without an increase in side effects compared with traditional NCA treatment.
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