Brushless DC Motors: Our New Best Friends?

摘要

As past behaviour is apparently a good indicator of future behaviour, let's start the search for the next 30 years there. Three decades ago, the PMDC (permanent magnet DC) motors looked pretty much the same, as did induction motors and series AC motors. Beneath the surface, it's a little different, Neodymium is commonplace, brush grades have advanced and improved steel grades contribute in the search for higher efficiency. Look deeper again and we can see the effects of more advanced magnetic and thermal simulation packages.