AC voltage spectrum with constant amplitude and phase when 'vType' is 'parameter',
with variable amplitude and phase when 'vType' is 'signal'.
The voltage-spectrum is given by the expression
v_spec = sqrt(2)*veff*sum_n(cos(h[n]*(theta + alpha_tot[n]))) with alpha_tot[n] = alpha + system.alpha0 + alpha0[n] where alpha = vPhasor_in[2] (common phase) for signal input, else 0
Optional input:
omega_in angular frequency (if fType == "Signal") vPhasor_in {modulation(v), common phase(v)} vPhasor_in[1] = 1 delivers the values for constant amplitudes v0 vPhasor_in[1] in SI or pu, depending on choice of 'units' vPhasor_in[2] in rad