CONTROLLING METHOD FOR SPEED OF DC MOTOR

PURPOSE:To improve the accuracy of a speed control by zero-holding a suppressor at the time of switching normal/reverse converter. CONSTITUTION:A DC motor is controlled at its speed by two sets of power converters connected in anti-parallel. Its controller is composed of a speed regulator 14, a curr...

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Bibliographische Detailangaben
Hauptverfasser:	SHIMODA KAZUAKI, SHIROKURA MITSUNORI
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	PURPOSE:To improve the accuracy of a speed control by zero-holding a suppressor at the time of switching normal/reverse converter. CONSTITUTION:A DC motor is controlled at its speed by two sets of power converters connected in anti-parallel. Its controller is composed of a speed regulator 14, a current regulator 16, a suppressor 23 of an integrator, a limiter 25, etc. A zero-holding contact 30 is provided in the suppressor 23, and turned ON, OFF by a command from a switching command calculator 22. As a result, the suppressor 23 is zero-held by the ON of the contact 30 to abruptly reduce a current command value to zero.