Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP50045216ApriorityCriticalpatent/JPS51121119A/en
Priority to DE19762615972prioritypatent/DE2615972A1/en
Publication of JPS51121119ApublicationCriticalpatent/JPS51121119A/en
Publication of JPS5636677B2publicationCriticalpatent/JPS5636677B2/ja
H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
H02P25/022—Synchronous motors
H02P25/024—Synchronous motors controlled by supply frequency