An Estimation Method of the Manufacturing Process%26apos; Effect on Iron Losses

作者：Scutaru Gheorghe^*; Gavrila Horia; Peter Ioan

来源：Advances in Electrical and Computer Engineering, 2014, 14(2): 49-52.

DOI：10.4316/AECE.2014.02008

• Design engineering
• Energy efficiency
• Induction motors
• Magnetic circuits
• Magnetic losses

More than 60% of industrial electricity consumption is made by electrical drives with induction motors. In 2008, by IEC 60034-30, the International Electrotechnical Commission defined the efficiency classes of induction motors namely: IE1, IE2 and IE3. The IE4 was defined in 2010 by IEC 60034-3. From 1 January 2015, the induction motors with a rated output of 7.5-375 kW shall not be less efficient than the IE3 class (Premium Efficiency Class). In order to obtain IE3 motors, manufacturers need to have a design method which takes into account the influence of the technological process on the properties of materials used; specially magnetic properties. This paper presents a new method to estimate the iron losses taking into account the effect of the mechanical cutting on the specific iron losses of the sheets. The method presented enables more accurate determination of the iron losses taking into account the effect of the punching process on the magnetic properties of sheets without a significant increase of the computational time. The case of M400 iron sheets was analyzed.

• 出版日期2014