Electric Motors, Trends over the last 50 Years
For those born after 2000 and electric motor is seen as just another product of technology, just like the cell phone. Electric motors have been with us for the last 200 years, personal handheld phone (Motorola and Martin Cooper) about 50. There is a link of course, that being switching devices.
Although it is an accepted fact that inverters and variable frequency drives are with us to stay, older technology relied on some pretty innovative ideas to increase and/or lock an electric motor’s speed.