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Design problems of permanent magnet (PM) high-speed machines have some peculiarities. The possibilities of increasing the electromagnetic torque are depended on mechanical, electrical and magnetic aspects. Mechanical aspects of designing for some types of high speed PM electrical machines such as PM synchronous machines with a wide range of rotating speed and power rating are specially discussed in...
The starting torque of the line-starting synchronous permanent magnet machines has two components, namely, the driving induction torque and the braking magnet torque. The synchronous PM motor can reach the speed of rotation close by synchronous ones if the asynchronous electromagnetic torque will be greater than the braking electromagnetic torque. The calculations were made for two different design...
This paper deals with alternative solution of submersible sealed oil-extended motor - submersible unprotected solid-rotor induction motor of 12/18 kW, 750/1500 V, 3000/6000 rpm, which can operate inside oil well, in corrosive medium-strata liquid (mixture of oil, associated water, mineral admixture and oil gas) with ambient temperature 1500degC and pressure 30 MPa. To estimate the performance of the...
Investigations for developing ultimate rating microturbogenerators based on modern materials were executed. Maximum permissible electromechanical and mechanical loads depending on minimum permissible core dimensions for microturbogenerators with rating of 100 and 200 kW and speed of rotation 30000-100000 rpm are determined. Complex simulation models for the purpose of chosen generator parameters optimization...
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