By Harry David Craig (auth.), Professor Francesco Parasiliti, Dr. Paolo Bertoldi (eds.)
This e-book stories the state-of-the-art of energy-efficient electric motor pushed approach applied sciences, which are used now and within the close to destiny to accomplish major and low-cost power rate reductions. It comprises the hot advancements in complicated electric motor end-use units (pumps, lovers and compressors) by means of many of the biggest brands. guidelines and courses to advertise the massive scale penetration of energy-efficient applied sciences and the industry transformation are featured within the ebook, describing the studies performed in numerous components of the realm. This vast assurance comprises contributions from suitable associations within the Europe, North the US, Latin the United States, Africa, Asia, Australia and New Zealand.
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Participants generally found the sessions to be both useful and of high quality. An impressive 76% of customers participating in CAC systems training reported that they had made significant capital or operating improvements to their compressed air system since attending the training. Using conservative estimates, participants saved 8% of compressed air system energy on average as the direct result of the training. In addition, end users who implemented compressed air system efficiency measures experienced significant non-energy benefits, including: reduced downtime, reduced system moisture and contamination, and more consistent system pressure.
Habetler, "Sensorless speed measurement using current harmonic spectral estimation in induction machine drives", IEEE Transactions on Power Electronics, Vol. II, No I, January, 1996, pp. 66-73. Determining the Efficiency of Electric Motors Does the Standard Draft lEe 61972 Provide Improvements for the European Market? Herbert Auinger Eckehard Bunzel, Karin Friedrich Dr. -Ing. habil. -Ing. Karin Friedrich VEM motors GmbH, Wernigerode Contribution of the ZVEI, German Manufacturers Association of Electric and Electronic Industries - Low Voltage Group, Frankfurt General Nowadays, the reduction of energy consumption, and, as a result, the protection of our environment is one of the most important concerns of reasonable technical activities.
During that transitory it is easy to measure the input power consumed by the motor, that is to say: 45 Peons = PCu + Pvacio + Protor + Pmee On the other hand, the input power has the following relationship with the mechanical power in the axis of the motor: Pmee 1-s 1 =-Protor ::::> Peons = PCu + Pvacio + - - Pmee 1-s s The efficiency, that we will designate with the name of dynamic efficiency, can be calculate by means of: P mee (Peons - PCu - Pvacio )X(1-s) YJdinam = - - = Peons Peons Each term of this last expression can be measured with the no load motor during the motor starting.