BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:Europe/Bucharest BEGIN:DAYLIGHT DTSTART:20190331T040000 TZOFFSETFROM:+0200 TZOFFSETTO:+0300 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3 TZNAME:EEST END:DAYLIGHT BEGIN:STANDARD DTSTART:20191027T030000 TZOFFSETFROM:+0300 TZOFFSETTO:+0200 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10 TZNAME:EET END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20190503T184802Z UID:4D088AD5-D153-4CBA-A1AC-F0B563C3CE8C DTSTART;TZID=Europe/Bucharest:20190424T100000 DTEND;TZID=Europe/Bucharest:20190424T115900 DESCRIPTION:The WIE IEEE Romania members’ group has actively participated at this Technical Activity\, entitled “Non-Oriented Silicon Steels used in Electrical Motor Production"\, through its representants Assoc. Prof. Veronica Paltanea and Lecturer Marilena Stanculescu\, which have spoken wi th students. Important worldwide guiding rules have been established\, reg arding the reduction of electric power consumption and CO2 emissions. The electrical machines should be more efficient\, because their energy consum ption accounts for 70 % of industry energy usage. Also\, their carbon foot print is high\, and thus it has to be reduced\, by choosing high-performan ce electrical machines. In order to comply with IEC 60034-30-1\, the produ cers should increase the copper mass in the stator\, use high quality thin ner non-oriented electrical steels\, optimize the air-gaps\, and improve a lso the cooling systems. The IE3 motors have lower copper losses\, higher inductances and increased starting currents. Comparing an IE3 motor with a n IE2 machine it can be concluded that the starting current is 5% higher a nd the inrush value is 21% bigger. The motor-protective circuit breakers\, contactors\, and overload relays have thus to be designed in a proper man ner. Assoc. Prof. Veronica Paltanea have presented the main properties of M400-50A and M400-65A alloys\, used in the IE3 electrical machine magnetic cores’ manufacture and M300-35A and NO20 high quality steel grades for IE4 motors. The samples were characterized with a laboratory single sheet tester\, which consists of a double C laminated yoke and two concentric so lenoids of 150 mm magnetic path length. One of them has 173 turns and it i s used to generate the magnetic field\; the other one is placed near the t ested sample\, has 101 turns and acts as a pickup coil for the secondary v oltage. Energy losses and magnetic permeability were determined\, by contr olling the sinusoidal waveform of the secondary voltage according to the I EC 60404-3 standard in the frequency range 3 Hz – 400 Hz at peak magneti c polarization Jp = 1 T\, using a 12 bit 500 MHz HDO4054 LeCroy oscillosco pe\, for the acquisition of the signals. Lecturer Marilena Stanculescu has explained the loss separation concept and presented the experimental resu lts with supplementary explanation regarding the chemical composition of t he electrical steel and metallurgical processes. The WIE group through its representanst Assoc. Prof. Veronica Paltanea and Lecturer Marilena Stancu lescu have decided to continue with another technical and administrative a ctivities\, because the students are very interested in new trends in elec trical machines.\n\nSpeaker(s): Assoc. Prof. Veronica Paltanea\, Lecturer Marilena Stanculescu\n\nRoom: EB 210\, Bldg: Electrical Engineering Facult y\, University Politehnica of Bucharest\, 313 Splaiul Independentei\, Dist rict 6\, Bucharest\, Romania\, Bucharest\, Municipiul Bucuresti\, Romania\ , RO-060042 LOCATION:Room: EB 210\, Bldg: Electrical Engineering Faculty\, University P olitehnica of Bucharest\, 313 Splaiul Independentei\, District 6\, Buchare st\, Romania\, Bucharest\, Municipiul Bucuresti\, Romania\, RO-060042 ORGANIZER:m1vera2@yahoo.com SEQUENCE:2 SUMMARY:Non-Oriented Silicon Steels used in Electrical Motor Production URL;VALUE=URI:https://events.vtools.ieee.org/m/198606 X-ALT-DESC:Description: <br /><p>The WIE IEEE Romania members&rsquo\; group has actively participated at this Technical Activity\, entitled &ldquo\;N on-Oriented Silicon Steels used in Electrical Motor Production"\, through its representants Assoc. Prof. Veronica Paltanea and Lecturer Marilena Sta nculescu\, which have spoken with students. Important worldwide guiding ru les have been established\, regarding the reduction of electric power cons umption and CO<sub>2</sub> emissions. The electrical machines should be mo re efficient\, because their energy consumption accounts for 70 % of indus try energy usage. Also\, their carbon footprint is high\, and thus it has to be reduced\, by choosing high-performance electrical machines. In order to comply with IEC 60034-30-1\, the producers should increase the copper mass in the stator\, use high quality thinner non-oriented electrical stee ls\, optimize the air-gaps\, and improve also the cooling systems. The IE3 motors have lower copper losses\, higher inductances and increased starti ng currents. Comparing an IE3 motor with an IE2 machine it can be conclude d that the starting current is 5% higher and the inrush value is 21% bigge r. The motor-protective circuit breakers\, contactors\, and overload relay s have thus to be designed in a proper manner. Assoc. Prof. Veronica Palta nea have presented the main properties of M400-50A and M400-65A alloys\, u sed in the IE3 electrical machine magnetic cores&rsquo\; manufacture and M 300-35A and NO20 high quality steel grades for IE4 motors. The samples wer e characterized with a laboratory single sheet tester\, which consists of a double C laminated yoke and two concentric solenoids of 150 mm magnetic path length. One of them has 173 turns and it is used to generate the magn etic field\; the other one is placed near the tested sample\, has 101 turn s and acts as a pickup coil for the secondary voltage. Energy losses and m agnetic permeability were determined\, by controlling the sinusoidal wavef orm of the secondary voltage according to the IEC 60404-3 standard in the frequency range 3 Hz &ndash\; 400 Hz at peak magnetic polarization Jp = 1 T\, using a 12 bit 500 MHz HDO4054 LeCroy oscilloscope\, for the acquisiti on of the signals. Lecturer Marilena Stanculescu has explained the loss se paration concept and presented the experimental results with supplementary explanation regarding the chemical composition of the electrical steel an d metallurgical processes.&nbsp\;The WIE group through its representanst A ssoc. Prof. Veronica Paltanea and Lecturer Marilena Stanculescu have decid ed to continue with another technical and administrative activities\, beca use the students are very interested in new trends in electrical machines. </p> END:VEVENT END:VCALENDAR