JPS5670464A - Single-phase reactive power converter - Google Patents
Single-phase reactive power converterInfo
- Publication number
- JPS5670464A JPS5670464A JP14798479A JP14798479A JPS5670464A JP S5670464 A JPS5670464 A JP S5670464A JP 14798479 A JP14798479 A JP 14798479A JP 14798479 A JP14798479 A JP 14798479A JP S5670464 A JPS5670464 A JP S5670464A
- Authority
- JP
- Japan
- Prior art keywords
- reactive power
- phase
- frequency
- volume
- power system
- 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
- Supply And Distribution Of Alternating Current (AREA)
Abstract
PURPOSE: To enable detection of a reactive power with small errors even for an imbalance three-phase power system and a frequency fluctuation system by multiplying the volume of electricity corresponding to the current and voltage of a power system phased in a prescribed manner and by removing an unrequired component of frequency with a filter.
CONSTITUTION: The current and voltage of a power system are converted into prescribed electric volumes by input converting circuits 1 and 2, while they are advanced or delayed in shifting respectively by phase angles of θ, 90-θ degrees by phasers 3 and 4. And when the outputs of the phase shifters 3 and 4 are processed for multiplication in a multiplying circuit 5, they turn to be a DC component proportional to the volume of the reactive power and a higher harmonic component which is double the volume of inputted electricity. When this unnecessary higher harmonic component is removed by LPF 6, the reactive power with small errors also for an imbalance three-phase power system and a system wherein the frequency fluctuates is detected and thus the single-phase reactive power converter which can continue operation even when the rated frequency is changed.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14798479A JPS5670464A (en) | 1979-11-15 | 1979-11-15 | Single-phase reactive power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14798479A JPS5670464A (en) | 1979-11-15 | 1979-11-15 | Single-phase reactive power converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5670464A true JPS5670464A (en) | 1981-06-12 |
Family
ID=15442529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14798479A Pending JPS5670464A (en) | 1979-11-15 | 1979-11-15 | Single-phase reactive power converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5670464A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57111460A (en) * | 1980-11-17 | 1982-07-10 | Siemens Ag | Electronic type reactive power measuring apparatus |
| JPS606877A (en) * | 1983-02-26 | 1985-01-14 | Ohkura Electric Co Ltd | Method and device for detecting reactive power |
| JPH01224676A (en) * | 1988-03-04 | 1989-09-07 | Tokyo Electric Power Co Inc:The | Electronic watthour meter |
| JPH01224675A (en) * | 1988-03-04 | 1989-09-07 | Tokyo Electric Power Co Inc:The | Electronic watthour meter |
-
1979
- 1979-11-15 JP JP14798479A patent/JPS5670464A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57111460A (en) * | 1980-11-17 | 1982-07-10 | Siemens Ag | Electronic type reactive power measuring apparatus |
| JPS606877A (en) * | 1983-02-26 | 1985-01-14 | Ohkura Electric Co Ltd | Method and device for detecting reactive power |
| JPH01224676A (en) * | 1988-03-04 | 1989-09-07 | Tokyo Electric Power Co Inc:The | Electronic watthour meter |
| JPH01224675A (en) * | 1988-03-04 | 1989-09-07 | Tokyo Electric Power Co Inc:The | Electronic watthour meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5683284A (en) | Variable speed operating device for induction motor | |
| JPH01133522A (en) | Controller for active filter | |
| JPS5670464A (en) | Single-phase reactive power converter | |
| CN207603217U (en) | A kind of adaptive positive sequence fundamental extraction circuit of frequency | |
| JPS5679223A (en) | Detecting system for instantaneous torque of ac motor | |
| JPS56117576A (en) | Compensating circuit for phase difference of power converter | |
| JPS5441419A (en) | Three-phase.two-phase power conversion transformer | |
| JPS5442712A (en) | Electric car controlling system | |
| JPS5728579A (en) | Starting device of squirrel-cage induction motor | |
| ABDEL-RAZEK | Natural commutation in solid rotor synchronous machines associated with static convertors | |
| JPS5480540A (en) | Power source device | |
| JPS54113044A (en) | Ground faulted phase detecting relay | |
| JPS56108967A (en) | Reactive power detector | |
| SU964853A1 (en) | Device for symmetrization of asymmetric three-phase load | |
| JPS56159974A (en) | Inverter | |
| JPS5385468A (en) | Polyphase power detector | |
| JPS5694857A (en) | Demodulating circuit of am stereo signal | |
| JPS5684564A (en) | Reactive power meter | |
| JPS55127885A (en) | Method for detecting missing phase in output of three- phase inverter | |
| SU1030738A1 (en) | Method and device for measuring reactive power of electrical system non-sine modes | |
| SU1067564A1 (en) | Device for symmetrizing voltages in power supply system with single-phase load | |
| JPS552963A (en) | Phase rotation detecting circuit for three-phase power supply | |
| JPS5579684A (en) | Multiplex current type inverter system | |
| Tran et al. | Compensation of offset for SRF-PLL in grid-connected inverters | |
| JPS54134327A (en) | Suppressing overcurrent in inverter device |