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Transcript
6-1
Chapter 6
Thyristor Converters
• Controlled conversion of ac into dc
6-2
Thyristor Converters
• Two-quadrant conversion
6-3
Primitive circuits with thyristors
6-4
Thyristor Triggering
• ICs available
6-5
Full-Bridge Thyristor Converters
• Single-phase and three-phase
6-6
Single-Phase Thyristor Converters
• Two groups with two thyristor each
6-7
1-Phase Thyristor Converter Waveforms
• Assuming zero ac-side inductance
6-8
Average DC Output Voltage
• Assuming zero ac-side inductance
6-9
Input Line-Current Waveforms
• Harmonics, power and reactive power
6-10
1-Phase Thyristor Converter
• Finite ac-side inductance; constant dc output current
6-11
Thyristor Converter Waveforms
• Finite ac-side inductance
6-12
Thyristor Converter: Discontinuous Mode
• This mode can occur in a dc-drive at light loads