Current and Voltage Sensor (Three-Phase)

Ideal three-phase current and voltage sensor

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Libraries:
Simscape / Electrical / Sensors & Transducers

Description

The Current and Voltage Sensor (Three-Phase) block measures the voltage and current of a three-phase electrical node.

Note

You must connect the Current and Voltage Sensor (Three-Phase) block in series with a three-phase element. For more information on how to use this block, see Build and Simulate Composite and Expanded Three-Phase Models.

Examples

Power Converter Model Fidelity Comparison

Power Converter Model Fidelity Comparison

Use different levels of fidelity in power converters. You change the level of fidelity by changing the values for the Fidelity level, Switching device, and Integral protection diode parameters of the Converter (Three-Phase) block. You also change the inputs to the G port. Using a higher level of fidelity improves the accuracy of the results but it also slows down simulation.

Open Model

Ports

Output

V — Voltage
physical signal

Three-element physical signal vector output port associated with the a-, b-, and c-phase voltages.

I — Current
physical signal

Three-element physical signal vector output port associated with the a-, b-, and c-phase currents.

Conserving

~1 — Three-phase port of side 1
electrical

Electrical conserving port representing the three phases of side 1. For more information, see Three-Phase Ports.

Dependencies

To enable this port, set the Electrical connection parameter to Composite three-phase ports.

~2 — Three-phase port of side 2
electrical

Electrical conserving port representing the three phases of side 2. For more information, see Three-Phase Ports.

Dependencies

To enable this port, set the Electrical connection parameter to Composite three-phase ports.

a1 — Phase `a` of side 1
electrical

Electrical conserving port associated with the phase a of side 1.

Dependencies

To enable this port, set the Electrical connection parameter to Expanded three-phase ports.

b1 — Phase `b` of side 1
electrical

Electrical conserving port associated with the phase b of side 1.

Dependencies

To enable this port, set the Electrical connection parameter to Expanded three-phase ports.

c1 — Phase `c` of side 1
electrical

Electrical conserving port associated with the phase c of side 1.

Dependencies

To enable this port, set the Electrical connection parameter to Expanded three-phase ports.

a2 — Phase `a` of side 2
electrical

Electrical conserving port associated with the phase a of side 2.

Dependencies

To enable this port, set the Electrical connection parameter to Expanded three-phase ports.

b2 — Phase `b` of side 2
electrical

Electrical conserving port associated with the phase b of side 2.

Dependencies

To enable this port, set the Electrical connection parameter to Expanded three-phase ports.

c2 — Phase `c` of side 2
electrical

Electrical conserving port associated with the phase c of side 2.

Dependencies

To enable this port, set the Electrical connection parameter to Expanded three-phase ports.

Parameters

Electrical connection — Whether to model composite or expanded three-phase ports
`Composite three-phase ports` (default) | `Expanded three-phase ports`

Since R2026a

Whether to model composite or expanded three-phase ports.

Composite three-phase ports represent three individual electrical conserving ports with a single block port. You can use composite three-phase ports to build models that correspond to single-line diagrams of three-phase electrical systems.

Expanded three-phase ports represent the individual phases of a three-phase system using three separate electrical conserving ports.

Programmatic Use

To set the block parameter value programmatically, use the set_param function.

Parameter:	`port_option`
Values:	`"ee.enum.threePhasePort.composite"` (default) \| `"ee.enum.threePhasePort.expanded"`

Voltage measurement type — Voltage measurement type
`phase-to-phase voltage` (default) | `phase-to-ground voltage`

Type of voltage measurement.

Measurement output unit — Measurement system
`Per unit` (default) | `SI`

System of units for output current and voltage measurements.

Nominal power — Nominal power
`100e6` `V*A` (default)

Nominal power.

Dependencies

To enable this parameter, set Measurement output unit to Per unit.

Nominal voltage (phase-to-phase RMS) — Nominal voltage
`24e3` `V` (default)

Nominal phase-to-phase root-mean-square (RMS) voltage.

Dependencies

To enable this parameter, set Measurement output unit to Per unit.

Extended Capabilities

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

Version History

Introduced in R2019a

R2026a: The Modeling option parameter has changed

The Modeling option parameter has been replaced with the Electrical connection parameter. You can now also set this parameter value programmatically by using the set_param function.

If you created a model containing this block in an earlier release, the software now automatically sets the value of the Electrical connection parameter to the previous value of the Modeling option parameter.

See Also

Current Sensor (Three-Phase) | Line Voltage Sensor (Three-Phase) | Phase Voltage Sensor (Three-Phase) | Power Sensor

Topics

Three-Phase Ports