FIELD: control of power quality in power supply systems. SUBSTANCE: analyzer has input block, positive phase-sequence filter, series-connected selection-storage block, analog switch, rectifier, selective amplifier, effective value separating block, registrar, control unit. Positive phase-sequence filter has three-legged instrument transformer, 90 deg. out of phase shifter and adder. Control unit has connected in series clock-pulse generator, NOR gate, delay element and NOR gate. EFFECT: higher efficiency. 3 cl, 5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DIGITAL DEVICE FOR MEASURING VOLTAGE HARMONIC FACTOR | 1990 |
|
RU2030753C1 |
| ANALYZER OF ENVELOPE OF SIGNAL OF THREE-PHASE SUPPLY LINE | 1989 |
|
RU2046356C1 |
| DEVICE FOR MEASURING QUALITY PARAMETERS OF THREE-PHASE NETWORK POWER | 0 |
|
SU1765787A1 |
| 0 |
|
SU1781642A1 | |
| STATISTICAL ANALYZER OF VOLTAGE SURGES AND DROPS | 0 |
|
SU1837325A1 |
| DIGITAL METER OF ELECTRIC POWER QUALITY IN THREE-PHASE MAINS | 0 |
|
SU1633368A1 |
| THREE-PHASE DISBALANCE DIGITAL METER | 0 |
|
SU1707574A1 |
| DEVICE FOR SAMPLING TESTS OF INSULATION RESISTANCE | 0 |
|
SU1762276A1 |
| DEVICE FOR MEASURING SYMMETRICAL COMPONENTS OF THREE-PHASE MAINS VOLTAGE | 0 |
|
SU1725166A1 |
| RESONANT VOLTAGE INVERTER | 1993 |
|
RU2072619C1 |
