JPS54115753A - Ac current controlling method - Google Patents
Ac current controlling methodInfo
- Publication number
- JPS54115753A JPS54115753A JP2257978A JP2257978A JPS54115753A JP S54115753 A JPS54115753 A JP S54115753A JP 2257978 A JP2257978 A JP 2257978A JP 2257978 A JP2257978 A JP 2257978A JP S54115753 A JPS54115753 A JP S54115753A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- electric valve
- ignition
- supplied
- power factor
- 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.)
- Granted
Links
Landscapes
- Control Of Voltage And Current In General (AREA)
Abstract
PURPOSE: To permit AC current to be continuously controlled, even if the power factor of load is changed, by figuring out the limit value of phase in which an electric valve can be turned on according to the time period from zero point of AC supply voltage through the turn-on of the electric valve to the next turn-off thereof.
CONSTITUTION: When power is supplied through a controllable electric valve to loads 3, 4 containing inductance, voltage across an electric valve 2 and supply voltage are applied to a phase detecting circuit 8 to obtain to obtain supply phase and angle phase left uncontrolled. Both phases are then supplied to a logical circuit 9. On the basis of logical signal at the output of the logical circuit is figured out the limit valve of αL of ignition phase by integrators 11, 21. Then logical product of this αL and the ignition phase Va taken out by AND gates 13, 23 is sent to a pulse amplifier 14 to control the ignition of the electric valve 2. Hence the ignition phase can be controlled not to exceed power factor angle so that the total output can be supplied without any adjustment even if the power factor of load is changed.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2257978A JPS6030964B2 (en) | 1978-02-28 | 1978-02-28 | AC current control method |
AU44523/79A AU521914B2 (en) | 1978-02-28 | 1979-02-22 | Controlling electric valves in ac power supply |
GB7906434A GB2016827B (en) | 1978-02-28 | 1979-02-23 | Method and apparatus for controlling electric valves in acpower supply |
US06/014,475 US4260948A (en) | 1978-02-28 | 1979-02-23 | Method and apparatus for controlling electric valves in AC power supply |
DE2907478A DE2907478C2 (en) | 1978-02-28 | 1979-02-26 | Method for controlling the electrical power supplied from an alternating current source via electrical valves to a predominantly inductive consumer |
CA322,346A CA1133054A (en) | 1978-02-28 | 1979-02-27 | Method and apparatus for controlling electric valve in ac power supply |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2257978A JPS6030964B2 (en) | 1978-02-28 | 1978-02-28 | AC current control method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54115753A true JPS54115753A (en) | 1979-09-08 |
JPS6030964B2 JPS6030964B2 (en) | 1985-07-19 |
Family
ID=12086761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2257978A Expired JPS6030964B2 (en) | 1978-02-28 | 1978-02-28 | AC current control method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6030964B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9218737B2 (en) | 2008-11-19 | 2015-12-22 | System General Corp. | Receiving control circuit for a wall control interface with phase modulation and detection for power management |
-
1978
- 1978-02-28 JP JP2257978A patent/JPS6030964B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9218737B2 (en) | 2008-11-19 | 2015-12-22 | System General Corp. | Receiving control circuit for a wall control interface with phase modulation and detection for power management |
Also Published As
Publication number | Publication date |
---|---|
JPS6030964B2 (en) | 1985-07-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5534854A (en) | Controlling method of secondary winding-exciting motor | |
JPS54115753A (en) | Ac current controlling method | |
JPS5517226A (en) | Controlling method for inverter and its control circuit | |
JPS5725192A (en) | Controller for induction motor | |
JPS54115754A (en) | Power feed control equipment using electric valve | |
JPS5450858A (en) | Temperature controller | |
JPS5619380A (en) | Voltage control of three-phase power supply | |
JPS57116579A (en) | Control system for semiconductor type ac switch | |
JPS5636716A (en) | Constant voltage control system | |
JPS5790728A (en) | Stabilizer of load electric power | |
JPS54155425A (en) | Control of inverter | |
JPS57134726A (en) | Conduction controller for lattice control rectifying element | |
JPS57142194A (en) | Electric power-saving control circuit for motor | |
JPS531821A (en) | Dc-ac converter | |
JPS56162997A (en) | Motor controlling device by primary frequency control | |
JPS53127665A (en) | Reactive power controller | |
JPS54721A (en) | Constant output controller for motor | |
JPS55111685A (en) | Motor speed controller | |
JPS57119672A (en) | Controlling system of output current for frequency converter device | |
JPS5448023A (en) | Reactive power controller for generator | |
JPS57177285A (en) | Power crow-bar power source | |
JPS5636717A (en) | Constant current control system | |
JPS56133999A (en) | Inverter control circuit | |
JPS55123713A (en) | Constant-current power unit | |
JPS5473240A (en) | System of controlling variation of alternating current voltage of alternating current-direct current converter |