A synchronous electric clock is driven by a synchronous motor, and how this works is not obvious. The speed at which a synchronous motor rotates is determined precisely by its design and the frequency of the AC supply, hence the use of the adjective synchronous. If a running synchronous ...
A synchronous electric clock is driven by a synchronous motor, and how this works is not obvious. The speed at which a synchronous motor rotates is determined precisely by its design and the frequency of the AC supply, hence the use of the adjective synchronous. If a running synchronous movem...
Linear Synchronous Motors: Transportation and Automation Systems by Jacek Gieras et al. CRC Press, 2011/2016. A History of Linear Electric Motors by Eric Laithwaite. Macmillan, 1987. Supertrains: Solutions to America's Transportation Gridlock by Joseph Vranich. St Martin's, 1991.Articles...
In synchronous AC motors, the rotor turns at exactly the same speed as the rotating magnetic field; in an induction motor, the rotor always turns at a lower speed than the field, making it an example of what's called an asynchronous AC motor. The theoretical speed of the rotor in an in...
There are many other types of electric motors, such as AC induction motors, AC synchronous motors, stepper motors (really a specialized form of brushless motor), and so on. All of these motors operate on variations of the principles we’ve looked at. They differ only in how they perform ...
in particular, and its Model X cousin, use AC induction motors (with the newer models featuring a permanent magnet synchronous motor plus an induction motor). In general terms, an induction motor is a motor that converts electrical energy into mechanical energy using an induced magnetic field. ...
Almost all EVs use Permanent-Magnet Synchronous Motor. In such an electric motor, there is an assembly in which a magnet is permanently mounted on a shaft called a rotor, which is supposed to rotate to supply the rotational force to the wheels. A circular housing known as the stator is pr...
Hybrid synchronous stepper motors work exactly as you’d suspect. They are a hybrid design that includes concepts from both permanent magnet design and variable reluctance design! In this design, the stepper motor has two cups on the rotor. Each cup is lined with many permanent magnet “teeth”...
TheHybrid Synchronousmotor is combinations of the previous two steppers. It has permanent magnet toothed rotor and also a toothed stator. The rotor has two sections, which are opposite in polarity and their teeth are offset as shown here. ...
In 1961, NASA gave Hughes a contract to build the Syncom (synchronous communication) series of satellites. In July 1963, Rosen and his colleagues watched as Syncom 2 soared into space and navigated into a (roughly) geosynchronous orbit. President Kennedy used the new system to have a ...