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Electric motors consume about 70% of industrial electricity and about 40%-45% of produced electricity in the world. This means that using high-efficiency electric motors will improve the level of energy consumption. In addition, it will reduce the impact of greenhouse gas emissions on the environment. Furthermore, it will significantly reduce the need for new power plants, thus reducing the invested resources to do so. Electric machines employing rare-earth magnets have higher efficiency and power density. However, rare-earth magnets are expensive, and their manufacturing process, as well as the process of mining rare-earth raw materials, is harmful to the environment. Thereby, the development of energy-efficient electric machines without rare-earth magnets is of great interest. The aim of this reprint was to gather new research publications in various topics related to improving the energy efficiency of electric machines without using rare-earth magnets. Ten articles have been published which cover various topics.

Electrostatics. --- Electric machines.

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Traction drives --- 621.313 --- Drives, Traction --- Transmission, Traction --- Power transmission --- Electric machines --- 621.313 Electric machines

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Electric circuits --- Electric machines --- Circuits électriques --- Générateurs électrostatiques --- Circuits électriques --- Générateurs électrostatiques

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The subject of this book is an important and diverse field of electric machines and drives. The twelve chapters of the book written by renowned authors, both academics and practitioners, cover a large part of the field of electric machines and drives. Various types of electric machines, including three-phase and single-phase induction machines or doubly fed machines, are addressed. Most of the chapters focus on modern control methods of induction-machine drives, such as vector and direct torque control. Among others, the book addresses sensorless control techniques, modulation strategies, parameter identification, artificial intelligence, operation under harsh or failure conditions, and modelling of electric or magnetic quantities in electric machines. Several chapters give an insight into the problem of minimizing losses in electric machines and increasing the overall energy efficiency of electric drives.

Electric driving. --- Electric machines. --- Electricity, Static --- Influence machines --- Static electricity --- Electrostatic apparatus and appliances --- Electric machinery --- Electric power --- Power transmission --- Semi-conductors & super-conductors

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elektrische machines --- Electrical engineering --- Electric machinery --- Machines électriques --- 621.313 --- #TELE:ELEN --- wisselstroommachines --- generatoren --- synchrone motoren --- inductie --- gelijkstroommachines --- Electromechanical devices --- Machinery --- Electric machines --- 621.313 Electric machines --- Machines électriques --- Électricité --- Électricité --- Électrotechnique --- Turbines --- Machines tournantes --- Matlab --- Moteurs --- Transformateurs