Engee documentation

Induction Machine Measurement

Measuring the values of asynchronous machine variables.

induction machine measurement

Description

The Induction Machine Measurement block outputs the variable values received from the Induction Machine Squirrel Cage block. The input of the Induction Machine Measurement block is connected to the output port of the asynchronous machine block.

The Output parameter determines the value to be output. Depending on the selected value, the Induction Machine Measurement unit:

  • Directly outputs the value of the element in the input signal vector

    Or

  • Calculates the value in relative units based on other elements in the input vector.

The Induction Machine Measurement block outputs the value of the asynchronous machine variable according to the expressions given in the table. For example, when the Output parameter is set to Stator d-axis voltage, the block outputs directly the value of the v_ds_pu element in the input vector. However, when the Output parameter is set to Slip, the block calculates the slip value by subtracting the value of the velocity_pu element from 1.

Output value Value of parameter Output Calculation of output value

Electromagnetic torque

Electrical torque

torque_pu

Rotor speed

Rotor velocity

velocity_pu

Stator d-axis voltage

Stator d-axis voltage

v_ds_pu

Stator q-axis voltage

Stator q-axis voltage

v_qs_pu

Stator zero-sequence voltage

Stator zero-sequence voltage

v_0s_pu

Stator d-axis current

Stator d-axis current

i_ds_pu

Stator q-axis current

Stator q-axis current

i_qs_pu

Stator zero-sequence stator current

Stator zero-sequence current

i_0s_pu

Slip

Slip

slip

Total power

Apparent power

Active power

Real power

Reactive power

Reactive power

Terminal voltage

Terminal voltage

Terminal current

Terminal current

Current and voltage phase angle, rad

Power factor angle (rad)

Power factor

Power factor

Ports

Input

Port_1 - input port
vector

Vector of values of variables of the connected asynchronous machine. Elements of the vector:

  • pu_torque.

  • pu_velocity

  • pu_vds

  • pu_vqs

  • pu_v0s

  • pu_ids

  • pu_iqs

  • `pu_i0s

Output

Port_1 - output results
scalar

The scalar associated with the output.

Parameters

Output - measurement
Electrical torque (By default) | Rotor velocity | Stator d-axis voltage | Stator q-axis voltage | Stator zero-sequence voltage | Stator d-axis current | Stator q-axis current | Stator zero-sequence current | Slip | Apparent power | Real power | Reactive power | Terminal voltage | Power factor angle | Power factor angle

Output parameter of the asynchronous machine. It has the following options:

  • Electrical torque.

  • `Rotor velocity

  • `Stator d-axis voltage

  • `Stator q-axis voltage

  • `Stator zero-sequence voltage

  • `Stator d-axis current

  • `Stator q-axis current

  • `Stator zero-sequence current

  • `Slip

  • Apparent power

  • `Real power

  • `Reactive power

  • Terminal voltage

  • Power factor angle

  • Power factor angle

Examples