JPS6470807A - Device for compensating reactive power - Google Patents
Device for compensating reactive powerInfo
- Publication number
- JPS6470807A JPS6470807A JP22804487A JP22804487A JPS6470807A JP S6470807 A JPS6470807 A JP S6470807A JP 22804487 A JP22804487 A JP 22804487A JP 22804487 A JP22804487 A JP 22804487A JP S6470807 A JPS6470807 A JP S6470807A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- voltage
- outputted
- inputted
- reactive power
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/36—Nc in input of data, input key till input tape
- G05B2219/36071—Simulate on screen, if operation value out of limits, edit program
Landscapes
- Control Of Electrical Variables (AREA)
Abstract
PURPOSE:To obtain a device prevented from being affected by the variation of pressure by shifting the phase of a voltage signal by pi/2 to fix the voltage by a voltage fixing circuit and obtaining a reactive power compensating value from the product of a DC component of the produce of the fixed voltage signal and a current signal and the fixed voltage signal to control a control circuit. CONSTITUTION:The phase of a voltage signal V is shifted by pi/2 through a phase shifter 4 and outputted as an output signal A. The signal A is outputted from a voltage fixing circuit 5 as a fixed voltage signal B and the signal B is inputted to a multiplier 6 together with a current signal I. The product of the signal I and the signal B is inputted to a filter 7 and only a DC component is outputted as a signal C. The signal C is inputted to a multiplier 8 together with the signal B and the product of these signals B, C is outputted as a reactive power compensating command value D. The signal D from the multiplier 8 is inputted to a control circuit in an inverter part shown in the following diagram, reactive power necessary for a load 2 is supplied by controlling the inverter and only active power necessary for the load 2 is supplied from a power supply 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22804487A JPS6470807A (en) | 1987-09-11 | 1987-09-11 | Device for compensating reactive power |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22804487A JPS6470807A (en) | 1987-09-11 | 1987-09-11 | Device for compensating reactive power |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6470807A true JPS6470807A (en) | 1989-03-16 |
Family
ID=16870320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22804487A Pending JPS6470807A (en) | 1987-09-11 | 1987-09-11 | Device for compensating reactive power |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6470807A (en) |
-
1987
- 1987-09-11 JP JP22804487A patent/JPS6470807A/en active Pending
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