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Unidrive M Regen Design Guide 163
Issue Number: 4
See Regen Supply Loss AC Level (03.023).
The supply voltage at its fundamental frequency can be represented as a combination of positive, negative and zero sequence components.
The Regen system supply voltage cannot contain any zero sequence components because there is no neutral connection. The negative phase
sequence component is an indication of the level of supply imbalance. Positive Phase Sequence Volts (03.037) and Negative Phase Sequence Volts
(03.038) show the positive and negative phase sequence components of voltage at the inverter terminals in r.m.s. line to line Volts. Note that
Negative Phase Sequence Volts (03.038) is zero unless Harmonic Reduction Enable (03.021) > 0.
See Positive Phase Sequence Volts (03.037).
See Harmonic Reduction Enable (03.021).
03.036 Estimated Supply Voltage
RO Num ND NC PT
VM_AC_VOLTAGE V
03.037 Positive Phase Sequence Volts
RO Num ND NC PT FI
VM_AC_VOLTAGE V
03.038 Negative Phase Sequence Volts
RO Num ND NC PT FI
VM_AC_VOLTAGE V
03.039 Negative Phase Sequence Current Gain
RW Num US
0.00 to 1.00
0.05
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