JPS55133698A - Thyristor scherbius system - Google Patents
Thyristor scherbius systemInfo
- Publication number
- JPS55133698A JPS55133698A JP3994879A JP3994879A JPS55133698A JP S55133698 A JPS55133698 A JP S55133698A JP 3994879 A JP3994879 A JP 3994879A JP 3994879 A JP3994879 A JP 3994879A JP S55133698 A JPS55133698 A JP S55133698A
- Authority
- JP
- Japan
- Prior art keywords
- power
- thyristors
- occurs
- thyristor
- under
- 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)
Abstract
PURPOSE:To prevent commutation failure under instantaneous power clutter, by using the forward power rectifier diode of a Scherbius unit and a thyristor unit to absorb an abnormal voltage which occurs across the secondary side of an induction motor under power failure. CONSTITUTION:Thyristors 12-14 are connected in parallel with one another between the current inflow line of a power rectifier 4 and the respective phases of a secondary AC circuit. Under power clutter such as phase disappearance, the thyristors 12-14 are fired by a detection signal from a power failure detector or the like to form a short circuit between the thyristors 12-14 and the current inflow side diode 4b of the power rectifier 4 to immediately absorb an abnormal output which occurs on the secondary side of a motor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3994879A JPS55133698A (en) | 1979-04-02 | 1979-04-02 | Thyristor scherbius system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3994879A JPS55133698A (en) | 1979-04-02 | 1979-04-02 | Thyristor scherbius system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55133698A true JPS55133698A (en) | 1980-10-17 |
Family
ID=12567173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3994879A Pending JPS55133698A (en) | 1979-04-02 | 1979-04-02 | Thyristor scherbius system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55133698A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50143019A (en) * | 1974-05-08 | 1975-11-18 | ||
JPS53123853A (en) * | 1977-04-05 | 1978-10-28 | Mitsubishi Electric Corp | Protective equipment for static scherbius eqipment |
JPS5413917A (en) * | 1977-07-04 | 1979-02-01 | Hitachi Ltd | Secondary exciter for induction motor |
-
1979
- 1979-04-02 JP JP3994879A patent/JPS55133698A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50143019A (en) * | 1974-05-08 | 1975-11-18 | ||
JPS53123853A (en) * | 1977-04-05 | 1978-10-28 | Mitsubishi Electric Corp | Protective equipment for static scherbius eqipment |
JPS5413917A (en) * | 1977-07-04 | 1979-02-01 | Hitachi Ltd | Secondary exciter for induction motor |
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