Engee documentation

Induction Machine Measurement

Measuring the values of asynchronous machine variables.

blockType: AcausalElectricPowerSystems.Electromechanical.Asynchronous.MachineMeasurement

machine measurement

Path in the library:

/Physical Modeling/Electrical/Electromechanical/Asynchronous/Induction Machine Measurement

Description

Block Induction Machine Measurement outputs the values of variables received from the block Induction Machine Squirrel Cage. Block entry Induction Machine Measurement it is connected to the output port of the asynchronous machine unit.

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

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

    Or

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

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

Output value Value of the Output parameter Calculation of the output value

The electromagnetic moment

Electrical torque

torque_pu

Rotor speed

Rotor velocity

velocity_pu

Stator voltage along the d axis

Stator d-axis voltage

v_ds_pu

Stator voltage along the q axis

Stator q-axis voltage

v_qs_pu

Zero sequence stator voltage

Stator zero-sequence voltage

v_0s_pu

Stator current along the d axis

Stator d-axis current

i_ds_pu

Stator current along the q axis

Stator q-axis current

i_qs_pu

Zero-sequence stator current

Stator zero-sequence current

i_0s_pu

Sliding

Slip

slip

Full power

Apparent power

Active power

Real power

Reactive power

Reactive power

Voltage at the terminals

Terminal voltage

Current through the terminals

Terminal current

Current and voltage phase shift angle, rad

Power factor angle (rad)

Power factor

Power factor

Ports

Entrance

Port_1 — input port
vector

Vector of variable values of the connected asynchronous machine. Vector elements:

  • pu_torque

  • pu_velocity

  • pu_vds

  • pu_vqs

  • pu_v0s

  • pu_ids

  • pu_iqs

  • pu_i0s

Output

Port_1 — output of pass results:q[<br>] scalar

The scalar associated with the output.

Parameters

Output — pass measurement:q[<br>] Electrical torque (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