Voltage Controller

Category: Toolbox > eDrives > Controllers

Inputs:

•      freq_n: Normalized frequency reference. Scaled Integer (2.32)

•      udc_n: Normalized d-axis voltage reference. Scaled Integer (2.32)

•      udc_n: Normalized DC bus voltage. Scaled Integer (2.32)

•      cntr_on: Controller enable. (binary input)

Outputs:

•      mA_ref: Modulation index reference for phase A. Scaled Integer (8.32)

•      mB_ref: Modulation index reference for phase B. Scaled Integer (8.32)

•      mC_ref: Modulation index reference for phase C. Scaled Integer (8.32)

Description: The Voltage Controller block uses the reference voltage signals to generate modulation indices for three-phase motor voltages using the Space Vector Modulation technique.

All inputs are divided by their respective full-scale values to derive normalized values. For example, ud_n = ud_ref/V_fs, where ud_ref is the user input and V_fs is the full-scale voltage.

Fullscale Current (A): Indicates the full-scale current value for normalization.

Fullscale Freq (Hz): Indicates the full-scale frequency value for normalization.

Fullscale Voltage (V): Indicates the full-scale voltage value for normalization.  

User Frequency Ramp (Hz/s): Indicates the safety limit to avoid sudden jerks in the input frequency values. 

User Voltage Ramp (V/s): Indicates the safety limit to avoid sudden jerks in the input voltage values.