Thyristor 12-Pulse Generator
Generate thyristor 12-pulse waveform in single-pulsing mode
Simscape / Electrical / Control / Pulse Width Modulation
The Thyristor 12-Pulse Generator block implements a thyristor 12-pulse waveform generator in single-pulsing mode.
You can use this block to perform phase-controlled AC to DC conversion by:
Measuring the synchronization angle of the AC signal with a phase-locked loop
Controlling a thyristor converter network with the pulses generated by this block
The Thyristor 12-Pulse Generator outputs six pulses for a delta gate driver and six pulses for a wye gate driver. The delta connection can lead (Delta11) or lag (Delta1). For information on the control model, see the Thyristor 6-Pulse Generator block.
theta — Synchronization angle, rad
Synchronization angle in the range
[0, 2*pi], in
alpha — Firing angle, rad
Thyristor firing angle in rad.
Pdelta — Delta pulse vector
Thyristor pulse vector for the delta connection.
Pwye — Wye pulse vector
Thyristor pulse vector for the wye connection.
Pulse ordering — Pulse ordering strategy
Sequential device order (default) |
Natural order of commutation
Specify the rule for pulse ordering based on the configuration of the
thyristor network you are controlling. Use the
device order strategy to generate pulses for the
Delta connection — Delta sinusoidal phase variance model
Leading (Delta11) (default) |
Sinusoidal phase variance model for the delta connection.
Pulse width (rad) — Pulse width
5*pi/6 rad (default) | positive scalar in range [0, pi]
Specify the width of each pulse in the range
Sample time (-1 for inherited) — Block sample time
1e-5 (default) | positive scalar
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
 Pelly, B. R. Thyristor Phase-Controlled Converters and Cycloconverters: Operation, Control, and Performance. New York, NY: John Wiley & Sons, Inc., 1971.
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