JPS5472418A - Variable frequency power source device - Google Patents
Variable frequency power source deviceInfo
- Publication number
- JPS5472418A JPS5472418A JP13948977A JP13948977A JPS5472418A JP S5472418 A JPS5472418 A JP S5472418A JP 13948977 A JP13948977 A JP 13948977A JP 13948977 A JP13948977 A JP 13948977A JP S5472418 A JPS5472418 A JP S5472418A
- Authority
- JP
- Japan
- Prior art keywords
- chopper
- alternative
- terminals
- alternative current
- circuit
- 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
Links
Landscapes
- Control Of Ac Motors In General (AREA)
- Ac-Ac Conversion (AREA)
Abstract
PURPOSE: To enable operating at any optional frequency together with to raise an economical property by connecting an alternative current electrical machine constituted of its each phase with symmetrical two windings to a circuit provided a diode bridge and a chopper between its direct current terminals.
CONSTITUTION: An alternative current motor M is commonly connected of its intermediate terminals 0 having symmetrical two windings at each phase, while one pair of diode bridge circuit of one side alternative current terminal being opened is constituted with diodes D11∼D14 and D21∼D24, together with choppers S1, S2 are connected between those direct current terminals, alternative current terminals of opened bridge circuits are connected to an alternative motor M on a reverse polarity respectively. In this manner when a chopper S1 is "on", a magnetic flux of each winding is on a positive direction, when a chopper S2 is "on", becomes to a negative direction, a revolving flux corresponding with an opening and closing period of choppers is generated, a circuit is simplified and an ecomomical property can be improved.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13948977A JPS5472418A (en) | 1977-11-22 | 1977-11-22 | Variable frequency power source device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13948977A JPS5472418A (en) | 1977-11-22 | 1977-11-22 | Variable frequency power source device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5472418A true JPS5472418A (en) | 1979-06-09 |
Family
ID=15246441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13948977A Pending JPS5472418A (en) | 1977-11-22 | 1977-11-22 | Variable frequency power source device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5472418A (en) |
-
1977
- 1977-11-22 JP JP13948977A patent/JPS5472418A/en active Pending
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