Four-Pulse Gate Multiplexer

Multiplex gate input signals to four quadrant

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  • Four-Pulse Gate Multiplexer block

Description

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

Physical signal port associated with the gate terminal of the third 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 fourth 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 B-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 third switching device in a connected converter block.

Dependencies

This port only appears for the Electrical ports block choice.

Electrical conserving port associated with the gate terminal of the fourth 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

DC Motor Control

DC Motor Control

A cascade speed-control structure for a DC motor. A PWM controlled four-quadrant Chopper is used to feed the DC motor. The Control subsystem includes the outer speed-control loop, the inner current-control loop, and the PWM generation. The total simulation time (t) is 4 seconds. At t = 1.5 seconds, the load torque increases. At t = 2.5 seconds, the reference speed is changed from 1000 rpm to 2000 rpm.

HESM Torque Control

HESM Torque Control

Control the torque in a hybrid excitation synchronous machine (HESM) based electrical-traction drive. Permanent magnets and an excitation winding excite the HESM. A high-voltage battery feeds the SM through a controlled three-phase converter for the stator windings and through a controlled four quadrant chopper for the rotor winding. An ideal angular velocity source provides the load. The Control subsystem uses an open-loop approach to control the torque and a closed-loop approach to control the current. At each sample instant, the torque request is converted to relevant current references. The current control is PI-based. The simulation uses several torque steps in both the motor and generator modes. The Visualization subsystem contains scopes that allow you to see the simulation results.

HESM Velocity Control

HESM Velocity Control

Control the rotor angular velocity in a hybrid excitation synchronous machine (HESM) based electrical-traction drive. Permanent magnets and an excitation winding excite the HESM. A high-voltage battery feeds the HESM through a controlled three-phase converter for the stator windings and through a controlled four quadrant chopper for the rotor winding. An ideal torque source provides the load. The Control subsystem includes a multi-rate PI-based cascade control structure. The control structure has an outer angular-velocity-control loop and three inner current-control loops. The Visualization subsystem contains scopes that allow you to see the simulation results.

Four-Switch Buck-Boost Converter Control

Four-Switch Buck-Boost Converter Control

Control the output voltage of a four-switch buck-boost converter. To adjust the duty cycle, the Control subsystem uses a PI-based control algorithm. In both the boost and buck modes, one switch controls the duty cycle, one is operated inversely and the other two are kept in fix positions. The input voltage and the system load are considered constant throughout the simulation. The total simulation time (t) is 0.25 seconds. At t = 0.15 seconds, the voltage reference changes and the system switches from buck mode to boost mode.

Four-Quadrant Chopper Control

Four-Quadrant Chopper Control

Control a four-quadrant chopper. The Control subsystem implements a simple PI-based control algorithm for controlling the output current. The simulation uses both positive and negative references. The total simulation time (t) is 1 second. At t = 0.5 seconds, the polarity of the load DC source E is changed.

SM Torque Control

SM Torque Control

Control the torque in a synchronous machine (SM) based electrical-traction drive. A high-voltage battery feeds the SM through a controlled three-phase converter for the stator windings and a controlled four quadrant chopper for the rotor winding. An ideal angular velocity source provides the load. The Control subsystem uses an open-loop approach to control the torque and a closed-loop approach to control the current. At each sample instant, the torque request is converted to relevant current references. The current control is PI-based. The simulation uses several torque steps in both motor and generator modes. The task scheduling is implemented as a Stateflow® state machine. The Visualization subsystem contains scopes that allow you to see the simulation results.

SM Velocity Control

SM Velocity Control

Control the rotor angular velocity in a synchronous machine (SM) based electrical-traction drive. A high-voltage battery feeds the SM through a controlled three-phase converter for the stator windings and a controlled four quadrant chopper for the rotor winding. An ideal torque source provides the load. The Control subsystem includes a multi-rate PI-based cascade control structure which has an outer angular-velocity-control loop and three inner current-control loops. The task scheduling in the Control subsystem is implemented as a Stateflow® state machine. The Visualization 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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