JPS5797355A - Dc rotary electric machine - Google Patents

Dc rotary electric machine

Info

Publication number
JPS5797355A
JPS5797355A JP17323380A JP17323380A JPS5797355A JP S5797355 A JPS5797355 A JP S5797355A JP 17323380 A JP17323380 A JP 17323380A JP 17323380 A JP17323380 A JP 17323380A JP S5797355 A JPS5797355 A JP S5797355A
Authority
JP
Japan
Prior art keywords
coils
field
groups
electric machine
rotary electric
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
JP17323380A
Other languages
Japanese (ja)
Inventor
Masaharu Muramatsu
Susumu Yamaguchi
Shoji Tanabe
Satoshi Miura
Seiji Yamashita
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 Ltd filed Critical Hitachi Ltd
Priority to JP17323380A priority Critical patent/JPS5797355A/en
Publication of JPS5797355A publication Critical patent/JPS5797355A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting

Abstract

PURPOSE:To prevent the insulation breakdown of a field coil in a DC electric machine by connecting coils forming the poles of the field coils in series-parallel form. CONSTITUTION:Coils 3a, 3c and 3b, 3d are respectively so connected to a power source that the surface faced with the armature 4 of field cores 2a, 2c becomes N-pole and the surface faced with the armature 4 of field cores 2b, 2d becomes S-pole. The coils 3a-3d are divided into groups G1 and G2 respectively having the coils 3a, 3c and 3b, 3d in such a manner that the coils 3a, 3c and 3b, 3d belonging to the groups G1, G2 are connected in parallel with each other. The groups G1, G2 are connected in series with each other. In this manner, the potential presented across the field coils can be lowered, thereby decreasing the factor of insulation breakdown due to insufficient withstand voltage.
JP17323380A 1980-12-10 1980-12-10 Dc rotary electric machine Pending JPS5797355A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17323380A JPS5797355A (en) 1980-12-10 1980-12-10 Dc rotary electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17323380A JPS5797355A (en) 1980-12-10 1980-12-10 Dc rotary electric machine

Publications (1)

Publication Number Publication Date
JPS5797355A true JPS5797355A (en) 1982-06-17

Family

ID=15956610

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17323380A Pending JPS5797355A (en) 1980-12-10 1980-12-10 Dc rotary electric machine

Country Status (1)

Country Link
JP (1) JPS5797355A (en)

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