Simplified Synchronous Machine Measurement

Per-unit measurement from simplified synchronous machine

Since R2020b

• 

Libraries:
Simscape / Electrical / Electromechanical / Synchronous

Description

The Simplified Synchronous Machine Measurement block outputs a per-unit measurement associated with a connected Simplified Synchronous Machine block. The input of the Simplified Synchronous Machine Measurement block connects to the pu output port of the Simplified Synchronous Machine block.

You set the Output parameter to a per-unit measurement associated with the simplified synchronous machine. Based on the value you select, the Simplified Synchronous 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 Simplified Synchronous Machine Measurement block outputs a per-unit measurement from the simplified synchronous 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_ed element in the input signal vector. However, when you set Output to Reactive power, the block calculates the value from the pu_ed, pu_eq, pu_id, and pu_iq elements.

Output Parameter Setting	Output Value Expression
EMF phase A	pu_EMFa
EMF phase B	pu_EMFb
EMF phase C	pu_EMFc
Electrical torque	pu_torque
Rotor velocity	pu_velocity
Stator d-axis voltage	pu_vd
Stator q-axis voltage	pu_vq
Stator zero-sequence voltage	pu_v0
Stator d-axis current	pu_id
Stator q-axis current	pu_iq
Stator zero-sequence current	pu_i0
Apparent power	$$\sqrt{pu\_P{t}^2+pu\_Q{t}^2}$$
Real power	pu_Pt = (pu_vd*pu_id) + (pu_vq*pu_iq) + 2(pu_v0*pu_i0)
Reactive power	pu_Qt = (pu_vq*pu_id) – (pu_vd*pu_iq)
Terminal voltage	$$\sqrt{(pu\_v{d}^2+\text{}pu\_v{q}^2)}$$
Terminal current	$$\sqrt{(pu\_i{d}^2+pu\_i{q}^2)}$$
Power factor angle	power_factor_angle = atan2(pu_Qt, pu_Pt)
Power factor	cos(power_factor_angle)
Load angle	load_angle(rad) = atan2(pu_vd, pu_vq)
Rotor electrical angle	$${\theta }_e(t)=N{\theta }_r(t)$$

Ports

Input

pu — Per-unit measurements from a connected synchronous machine

vector of physical signal

Physical signal associated with the per-unit measurements from a connected Simplified Synchronous Machine, specified as:

• pu_EMFa

• pu_EMFb

• pu_EMFc

• pu_torque

• pu_velocity

• pu_vd

• pu_vq

• pu_v0

• pu_id

• pu_iq

• pu_i0

Output

o — Per-unit measurement output port

physical signal

Physical signal output port associated with the per-unit measurement, returned as a physical signal.

Parameters

Output — Per-unit measurement from synchronous machine

EMF phase A (default) | EMF phase B | EMF phase C | 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 | Apparent power | Real power | Reactive power | Terminal voltage | Terminal current | Power factor angle | Power factor | Load angle | Rotor electrical angle

Per-unit measurement from simplified synchronous machine. The default value is EMF phase A.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2020b