.PowerSystems.AC3ph.Inverters.InverterAverage

Information

Four quadrant time-averaged inverter with modulator. Fulfills the power balance:

  vAC*iAC = vDC*iDC

The structure of this component is related that of a voltage source, with two minor differences:

1) theta is used instead of omega as input.

2) u_phasor is used instead of v_phasor defining the AC-voltage in terms of the DC voltage v_DC according to the following relations.

If equivalent to sine modulation:

  |v_AC| = u*sqrt(3/2)*v_DC/2     AC voltage norm

  u[1] ≤  1 for pure sine-modulation, but u[1] >  1 possible.
  u[1] = 1 corresponds to AC single-phase amplitude = v_DC/2

If equivalent to space-vector modulation:

  |v_AC| = u*sqrt(2/3)*v_DC       AC voltage norm

  u[1] ≤  sqrt(3)/2 = 0.866: pure sine-pwm,
  sqrt(3)/2 ≤  u[1] ≤  1:  overmodulation (not implemented in this preliminary version).
  u[1] = sqrt(3)/2 corresponds to AC single-phase amplitude = v_DC/sqrt(3)

If equivalent to block (rectangular) modulation:
Note that this component works with the fundamental of the rectangular voltage.

  |v_AC| = u*(4/pi)*sin(width*pi/2)*sqrt(3/2)*v_DC/2    AC voltage norm of fundamental

  u[1] = 1 for block modulation without pwm, 0 <  width <  1
  u[1] ≤  1 for block modulation with pwm.
  u[1] = 1 corresponds to AC single-phase amplitude = (4/pi)*sin(width*pi/2)*v_DC/2

Contents

Name	Description
Data	SC parameters