electricpy.conversions.sequencez¶

electricpy.conversions.sequencez(Zabc, reference='A', resolve=False, diag=False, rounds=3)[source]¶

Sequence Impedance Calculator.

Accepts the phase (ABC-domain) impedances for a system and calculates the sequence (012-domain) impedances for the same system. If the argument resolve is set to true, the function will combine terms into the set of [Z0, Z1, Z2].

When resolve is False:

\[Z_{\text{012-M}}=A_{\text{012}}^{-1}Z_{\text{ABC}}A_{\text{012}}\]

When resolve is True:

\[Z_{\text{012}}=A_{\text{012}}Z_{\text{ABC}}A_{\text{012}}^{-1}\]

Parameters:¶

Zabc : numpy.array of complex¶: 2-D (3x3) matrix of complex values representing the pharo impedance in the ABC-domain.
reference : {'A', 'B', 'C'}¶: Single character denoting the reference, default=’A’
resolve : bool, optional¶: Control argument to force the function to evaluate the individual sequence impedance [Z0, Z1, Z2], default=False
diag : bool, optional¶: Control argument to force the function to reduce the matrix to its diagonal terms.
rounds : int, optional¶: Integer denoting number of decimal places resulting matrix should be rounded to. default=3

Returns:¶

Z012 – 2-D (3x3) matrix of complex values representing the sequence impedance in the 012-domain

Return type:¶

numpy.array of complex