Recent Developments of Electrical Drives - Part 44. The book stating the recent developments of electrical drives, can be useful for engineers and researchers investigating and designing electrical and electronic devices as well as for students and young researchers dealing with electrical and electronic engineering, computer sciences (advanced computer modelling, sophisticated control systems with artificial intelligence tools applied, optimal design bye use of classical and genetic algorithms employed), applied mathematics and all the topics where electromagnetic, thermal, mechanical phenomena occur | 432 Nord et al. Figure 13. Ring samples 1A 1B and 2-5. Measured and simulated total loss at different frequencies using a modified conductivity and established factors for the hysteresis loss. The correspondence between measured and calculated values is good. From Table 5 it can also be seen that the values of hysteresis loss are very close between the different ring samples. Total loss comparison Simulations of total losses were carried out using the modified measured conductivity to simulate the eddy currents. Hysteresis losses were calculated from simulated B-field and the built-in iron loss model using the established values of Kh and a. The measured and simulated losses for ring samples 1A 1B and 2-5 are summarized in Fig. 13. It can be seen that the simulated values corresponds quite well with measurements. An evaluation of the three logical series gave no extra information except that bigger components have higher eddy current losses. What can be noticed is that regardless the ring or components size the simulated and measured results are very close to each other except the small ring samples where the eddy currents are slightly underestimated. Conclusions Measurements of iron losses on SMC ring samples of different sizes showed that the total loss per mass unit was depending on the component size. Bigger SMC components have higher eddy current losses. It is also shown that it is possible for SMC materials to find factors for eddy current and hysteresis losses resulting in good agreement between FEA simulations and measurements. . Loss Calculations for Soft Magnetic Composites 433 References 1 P. Jansson A. Jack Magnetic Assessment of SMC materials . Twenty first Conference on Properties and Applications of Magnetic Materials Chicago May 13-15 2000. 2 JMAG-Studio from the Japan Research Institute Ltd. Engineering Technology Division 16 Kudan Building 2F 1-5-3 Kudanminami Chiyoda-ku Tokyo 102-0074 Japan. . ELECTROACTIVE MATERIALS TOWARD NOVEL .
