2 phase(space vestor) pwm for 3phase inverter?

j_slobo@hotmail.com wrote:

http://www.tinaja.com/glib/deltams1.pdf


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Many thanks,

Don Lancaster                          voice phone: (928)428-4073
Synergetics   3860 West First Street   Box 809 Thatcher, AZ 85552
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Don Lancaster wrote:

thats not much help at all.

try reading:

Analysis of electrical machinery, Krause et al

matrix and space-phasor theory of electrical machine, G.J. Retter
(this is a GREAT book).

OR google Parke and Clarke tranformations


OR figure it out with high-school trigonometry. the idea is this: with 3
rotating phases, separated by a fixed angle, the system is
over-determined (more equations than variables). This is even more so
when all three vectors are balanced. you can thus represent a balanced
3-phase set of vectors with a SINGLE vector, rotating at the same
angular frequency

Cheers
Terry