Three-Phase, Full-Bridge Rectifier - KTH
Three-Phase, Full-Bridge Rectifier - KTH
Three-Phase, Full-Bridge Rectifier - KTH
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<strong>Three</strong>-<strong>Phase</strong>, <strong>Full</strong>-<strong>Bridge</strong> <strong>Rectifier</strong><br />
• Two groups with three diodes each<br />
Copyright © 2003<br />
by John Wiley & Sons, Inc.<br />
1-1
<strong>Three</strong>-<strong>Phase</strong>, <strong>Full</strong>-<strong>Bridge</strong> <strong>Rectifier</strong> Waveforms<br />
• Output current is<br />
assumed to be dc<br />
Copyright © 2003<br />
by John Wiley & Sons, Inc.<br />
1-2
<strong>Three</strong>-<strong>Phase</strong>, <strong>Full</strong>-<strong>Bridge</strong> <strong>Rectifier</strong>: Input<br />
Line-Current<br />
• Assuming output current to be purely dc and zero ac-side<br />
inductance<br />
Copyright © 2003<br />
by John Wiley & Sons, Inc.<br />
1-3
<strong>Three</strong>-<strong>Phase</strong>, <strong>Full</strong>-<strong>Bridge</strong> <strong>Rectifier</strong><br />
• Including the ac-side inductance<br />
Copyright © 2003<br />
by John Wiley & Sons, Inc.<br />
1-4
3-<strong>Phase</strong> <strong>Rectifier</strong>: Current Commutation<br />
• output<br />
current is<br />
assumed to be<br />
purely dc<br />
Copyright © 2003<br />
by John Wiley & Sons, Inc.<br />
1-5
Thyristor Converters<br />
• Two-quadrant conversion<br />
Copyright © 2003<br />
by John Wiley & Sons, Inc.<br />
1-6
Thyristors<br />
• Semi-controlled device<br />
• Latches ON by a gate-current pulse if forward biased<br />
• Turns-off if current tries to reverse<br />
Copyright © 2003<br />
by John Wiley & Sons, Inc.<br />
1-7
Primitive circuits<br />
with thyristors<br />
Copyright © 2003<br />
by John Wiley & Sons, Inc.<br />
1-8
Single-<strong>Phase</strong> Thyristor Converters<br />
Copyright © 2003<br />
by John Wiley & Sons, Inc.<br />
1-9
Input Line-Current Waveforms<br />
• Harmonics, power and reactive power<br />
Copyright © 2003<br />
by John Wiley & Sons, Inc.<br />
1-10
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