Grounded Neutral (Three-Phase)

Connect phases of three-phase system to electrical reference

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Description

The Grounded Neutral (Three-Phase) block connects the phases of a three-phase system to ground.

Note

If you want to connect the neutral point of the three-phase system to other blocks, use the Neutral Port (Three-Phase) block instead. If you want to create a floating neutral point, use the Floating Neutral (Three-Phase) block.

Ports

Conserving

~ — Three-phase port

electrical

Expandable composite (a,b, c) three-phase port.

Parameters

Modeling option — Whether to model composite or expanded three-phase ports

Composite three-phase ports (default) | Expanded three-phase ports

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.

Model Examples

Earthing Effects with Unbalanced Load

The effects of three different types of earthing connections on network voltages and currents.

Open Model

Three-Phase Asynchronous Direct Online Motor Connected to Hydraulic Pump

In this example, an asynchronous motor is connected to an ideal pump. The diameter of the valve on the hydraulic system affects the speed and current drawn by the motor.

Open Model

Three-Phase Custom Synchronous Machine

A custom Simscape™ implementation of a Synchronous Machine (SM). To view the SM source code, double-click on the Synchronous Machine block and then click on the hyperlink 'Source code'.

Open Model

Three-Phase Bridge Cycloconverter

A three-phase bridge cycloconverter. The cycloconverter consists of 36 thyristors and has the capacity to lower the frequency of the input voltage. The Control subsystem implements the cycloconverter RMS voltage control. It also provides pulse generation for the firing of the thyristors. The Visualization subsystem contains scopes that allow you to see the simulation results. The simulation time, t, is 1 second. The load increases when Load1 switches on at t = 0.75 seconds.

Open Model

Extended Capabilities

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

Version History

Introduced in R2013b