View Single Post
Old 12-08-2014, 09:56 AM   #1386 (permalink)
EcoModding Apprentice
Join Date: Nov 2012
Location: East Midlands
Posts: 180
Thanks: 13
Thanked 81 Times in 52 Posts
While I doing some work this morning, It just occurred to me that one could replace the bipolar PWM switching algorithm with a Unipolar version.

Basically what this means is that instead of the battery Voltage producing Line to line voltage, one could produce twice the line voltage, using a unipolar switching PWM waveform

Notice how the PWM on the graph is referenced to GND rather than 1/2VCC

That would allow 415V motors to be operated from a 300V Battery with no conversion losses. Anyone interested in this?
  Reply With Quote
The Following 3 Users Say Thank You to cts_casemod For This Useful Post:
e*clipse (12-08-2014), MPaulHolmes (12-08-2014), mpgmike (02-06-2022)