High speed electrical machines for power engineering

Many of the most common, useful devices that make modern life possible such as automobiles, batteries, computers, light bulbs, mobile phones and satellites, utilise electricity, a form of energy. Electricity may provide the power necessary for a machine to run, or it can carry data. Someone who intends to work as an electrical engineer should be curious about mysterious forces that significantly affect the universe but aren’t obvious to a layperson because electricity is ordinarily invisible to the naked eye. A future electrical engineer should have a powerful imagination and strong abstract thinking abilities. Electrical engineering is an area of science that investigates the nature of matter and energy.


Electrical engineering requires the interpretation and application of complex theories and demands technical abilities. High-speed electrical machines are widely used in different industries, such as machine tools, aerospace engineering, autonomous power engineering, etc. Power Engineering is one of the earliest fields that has developed within Electrical Engineering. It deals with the generation, transmission and distribution of electric power. Power engineers also work on a variety of power devices and power conversion. Power engineers deal with devices, processes and phenomena, analysis and design, renewable energy and environmentally-friendly power systems.


The electrical machine’s (EM) main task is to provide maximum power with a minimum energy loss and volume of active and constructive elements. The production technology improvement and reduction of the material consumption can significantly reduce the cost of electrical machines, and subsequently, the cost of the systems, where they are used in aircraft and machine tools, or resources obtained with their help like electricity and oil.


The development of new industries and the implementation of macro and micro research projects lead to the emergence of new tasks to increase the efficiency of electrical machines and reduce mass and size parameters. It is important to notice that the main consumers of micro EMs are systems with constant power consumption such as computer systems, navigation systems of unmanned aircraft. This type of load will lead to the fact that with the decrease of the HCPM energy characteristics, the magnetic flux density in the air gap decreases under the temperature influence.


Therefore, the main application areas of high-speed EMs are high-speed machine tools, aviation and space power engineering, as well as autonomous power engineering. The initial application of high-speed EMs is associated with the development of rocket and space technology.

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