3 Phase-controlled DC motor drives
3 Phase-controlled DC motor drives
3 Phase-controlled DC motor drives
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• Two basic methods by using static converterThe First method: using phase-controllerconverter to converter the ac source voltagedirectly into a variable dc voltage.The second method: Ac source voltage → fixeddc voltage → variable dc voltage.• Thyristor devices:SCR, Transistors, GTOs, MOSFETs, ect.