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Thyristor Rectifier Voltage Controller (Three-Phase)

Discrete-time DC-link voltage PI control for thyristor rectifiers

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  • Thyristor Rectifier Voltage Controller (Three-Phase) block

Libraries:
Simscape / Electrical / Control / Converter Control

Description

The Thyristor Rectifier Voltage Controller (Three-Phase) block implements a discrete-time proportional-integral (PI) based DC-link voltage controller for thyristor rectifiers.

Model

To regulate the output DC-link voltage of a thyristor rectifier, the Thyristor Rectifier Voltage Controller (Three-Phase) block determines firing angles using the cosine wave-crossing method. The figure shows the control structure, which includes a three-phase phase-locked loop (PLL).

Ports

Input

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Desired DC-link voltage.

Data Types: single | double

Measured DC-link voltage.

Data Types: single | double

External reset signal (rising edge) for integrators.

Data Types: single | double

Three-phase voltage specified as a vector of that contains the a-, b-, and c-phase voltages.

Data Types: single | double

Output

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Pulse control signal.

Data Types: single | double

Parameters

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Loop filter proportional gain for the phase-locked loop (PLL).

Loop filter integral gain for the phase-locked loop (PLL).

Proportional gain for the PI-controller that generates the reference phase voltage.

Integral gain for the PI-controller that generates the reference phase voltage.

Angular width of pulses.

Model for the ordering the generated pulses.

Time, in s, between consecutive block executions. During execution, the block produces outputs and, if appropriate, updates its internal state. For more information, see What Is Sample Time? and Specify Sample Time.

If this block is inside a triggered subsystem, inherit the sample time by setting this parameter to -1. If this block is in a continuous variable-step model, specify the sample time explicitly using a positive scalar.

Time constant for the DC voltage filter.

Dependencies

The Time constant voltage filter parameter is only visible when the Filter DC voltage check box is selected.

When the check box is:

  • Selected — The block filters the DC voltage signal.

  • Cleared — The block does not filter the DC voltage signal.

Dependencies

The Time constant voltage filter parameter is only visible when the Filter DC voltage check box is selected.

References

[1] Pelly, B. R. Thyristor Phase-Controlled Converters and Cycloconverters: Operation, Control, and Performance. New York, NY: John Wiley & Sons, Inc., 1971.

Extended Capabilities

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

Version History

Introduced in R2018a

See Also

Blocks

Simscape Blocks