Two-Pulse Gate Multiplexer

Multiplex gate input signals to two quadrant chopper

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  • Two-Pulse Gate Multiplexer block

Description

The Two-Pulse Gate Multiplexer block multiplexes two separate voltage signals into a single vector. The vectorized signal can control the gates of two switching devices in a converter, such as a Two-Quadrant Chopper block.

Model

There are two model variants for the block. To access the model variants, in the model window, right-click the block. From the context menu, select Simscape > Block choices.

The model variants are:

  • PS ports — Two-pulse gate multiplexer with physical signal ports. Select this default option to control switching device gates in a converter block using Simulink® gate-control voltage signals. To multiplex and connect Simulink signals to the gate-control inport of a converter block:

    1. Convert each voltage signal using a Simulink-PS Converter block.

    2. Multiplex the converted gate signals into a single vector using the multiplexer block.

    3. Connect the vector signal to the G port of the converter.

  • Electrical ports — Two-pulse gate multiplexer with electrical conserving ports. To control switching device gates in a converter block using Simscape™ Electrical™ Electronics and Mechatronics blocks, select this option. The electrical ports include pairs of electrical connections. Each pair corresponds to the gate and cathode of a switching device in the connected converter block.

Ports

Input

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Physical signal port associated with the gate terminal of the first switching device in a connected converter block.

Dependencies

This port only appears for the PS ports block choice.

Data Types: double

Physical signal port associated with the gate terminal of the second switching device in a connected converter block.

Dependencies

This port only appears for the PS ports block choice.

Data Types: double

Conserving

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Electrical conserving port associated with the gate terminal of the first switching device in a connected converter block.

Dependencies

This port only appears for the Electrical ports block choice.

Electrical conserving port associated with the A-phase for the high-side switching device.

Dependencies

This port only appears for the Electrical ports block choice.

Electrical conserving port associated with the gate terminal of the second switching device in a connected converter block.

Dependencies

This port only appears for the Electrical ports block choice.

Electrical conserving port associated with the DC negative connection for the low-side switching device.

Dependencies

This port only appears for the Electrical ports block choice.

Model Examples

First and Second Quadrant Chopper Control

First and Second Quadrant Chopper Control

Control a two-quadrant chopper. The two-quadrant chopper operates in the first and second quadrants, allowing positive and negative output current. The Control subsystem implements a simple PI-based control algorithm for controlling the output current. The load of the system is considered constant throughout the simulation.

BLDC Speed Control

BLDC Speed Control

Control the rotor speed in a BLDC based electrical drive. An ideal torque source provides the load. The Control subsystem uses a PI-based cascade control structure with an outer speed control loop and an inner dc-link voltage control loop. The dc-link voltage is adjusted through a DC-DC buck converter. The BLDC is fed by a controlled three-phase inverter. The gate signals for the inverter are obtained from hall signals. The simulation uses speed steps. The Scopes subsystem contains scopes that allow you to see the simulation results.

Extended Capabilities

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

See Also

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Topics

Introduced in R2018a

Simscape Electrical Documentation

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