JPS54153223A - Field pole switching circuit of direct currnt motor - Google Patents

Field pole switching circuit of direct currnt motor

Info

Publication number
JPS54153223A
JPS54153223A JP6114478A JP6114478A JPS54153223A JP S54153223 A JPS54153223 A JP S54153223A JP 6114478 A JP6114478 A JP 6114478A JP 6114478 A JP6114478 A JP 6114478A JP S54153223 A JPS54153223 A JP S54153223A
Authority
JP
Japan
Prior art keywords
revolution
positive
field winding
discharging resistor
contact point
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP6114478A
Other languages
Japanese (ja)
Inventor
Tomoaki Suzuki
Hidetaka Katsumura
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6114478A priority Critical patent/JPS54153223A/en
Publication of JPS54153223A publication Critical patent/JPS54153223A/en
Pending legal-status Critical Current

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  • Motor And Converter Starters (AREA)

Abstract

PURPOSE: To suppress induced voltage wiich is generated in field winding at switching of positive and negative revolution, and at the same time, reduce consumed power at normal operation, by connecting diode and discharging resistor to contact point which is operated with switching signal of positive and negavie revolution.
CONSTITUTION: Diodes 6, 7 are respectively connected to auxiliary contact point 3' of a direct current contactor for positive revolution and auxiliary contact point 4' of direct current contactor for reverse revolution, these are connected in parallel, are connected to discharging resistor 8 which is common, and his circuit 5' is connected to field winding 1 of direct current electric motor in parallel. From this structure, since induced voltage of the field winding 1 is suppressed through diode 6 or 7 and discharging resistor 8 respectively at switching time of positive and negative revolution and during normal operation, electric current is not currented in the discharging resistor 8 and the current is currented only when the field winding 1 is broken, consumed power can be exteamly reduced.
COPYRIGHT: (C)1979,JPO&Japio
JP6114478A 1978-05-24 1978-05-24 Field pole switching circuit of direct currnt motor Pending JPS54153223A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6114478A JPS54153223A (en) 1978-05-24 1978-05-24 Field pole switching circuit of direct currnt motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6114478A JPS54153223A (en) 1978-05-24 1978-05-24 Field pole switching circuit of direct currnt motor

Publications (1)

Publication Number Publication Date
JPS54153223A true JPS54153223A (en) 1979-12-03

Family

ID=13162602

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6114478A Pending JPS54153223A (en) 1978-05-24 1978-05-24 Field pole switching circuit of direct currnt motor

Country Status (1)

Country Link
JP (1) JPS54153223A (en)

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