x⃗(t)=23[xa(t)+axb(t)+a2xc(t)]modified x with right arrow above open paren t close paren equals two-thirds open bracket x sub a open paren t close paren plus bold a x sub b open paren t close paren plus bold a squared x sub c open paren t close paren close bracket is the complex spatial operator representing a 120∘120 raised to the composed with power electrical shift:
Electrical Machines and Drives: A Space Vector Theory Approach