Per-unit measurement from induction machine

**Library:**Simscape / Electrical / Electromechanical / Asynchronous

The Induction Machine Measurement block outputs a
per-unit measurement associated with a connected Induction Machine
Squirrel Cage or Induction Machine Wound
Rotor block. The input of the Induction Machine
Measurement block connects to the `pu`

output port
of the induction machine block.

You set the **Output** parameter to a per-unit measurement associated
with the induction machine. Based on the value you select, the Induction
Machine Measurement block:

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

Calculates the per-unit measurement by using values of elements in the input signal vector in mathematical expressions

The Induction Machine Measurement block outputs a
per-unit measurement from the induction machine according to the output value
expressions in the table. For example, when you set **Output** to
*Stator d-axis voltage*, the block directly outputs the value of
the *pu_vds* element in the input signal vector. However, when you set
**Output** to *Slip*, the block calculates the
slip value by subtracting the value of the *pu_velocity* element from
1.

Output Parameter Setting | Output Value Expression |
---|---|

Electrical torque | pu_torque |

Rotor velocity | pu_velocity |

Stator d-axis voltage | pu_vds |

Stator q-axis voltage | pu_vqs |

Stator zero-sequence voltage | pu_v0s |

Stator d-axis current | pu_ids |

Stator q-axis current | pu_iqs |

Stator zero-sequence current | pu_i0s |

Slip | 1-pu_velocity |

Apparent power | $$\sqrt{pu\_P{t}^{2}+pu\_Q{t}^{2}}$$ |

Real power | pu_Pt = (pu_vds*pu_ids) + (pu_vqs*pu_iqs) + 2(pu_v0s*pu_i0s) |

Reactive power | pu_Qt = (pu_vqs*pu_ids) – (pu_vds*pu_iqs) |

Terminal voltage | $$\sqrt{pu\_vd{s}^{2}+pu\_vq{s}^{2}}$$ |

Terminal current | $$\sqrt{pu\_id{s}^{2}+pu\_iq{s}^{2}}$$ |

Power factor angle (rad) | power_factor_angle = atan2(pu_Qt, pu_Pt) |

Power factor | cos(power_factor_angle) |

- Induction Machine Current Controller | Induction Machine Direct Torque Control | Induction Machine Direct Torque Control (Single-Phase) | Induction Machine Direct Torque Control with Space Vector Modulator | Induction Machine Field-Oriented Control | Induction Machine Field-Oriented Control (Single-Phase) | Induction Machine Flux Observer | Induction Machine Scalar Control