FR2241911A1 - Control circuit for two parallel inverters - has control signals obtained from ring counters and phase-shifted w.r.t. synchronizing signal - Google Patents
Control circuit for two parallel inverters - has control signals obtained from ring counters and phase-shifted w.r.t. synchronizing signalInfo
- Publication number
- FR2241911A1 FR2241911A1 FR7323740A FR7323740A FR2241911A1 FR 2241911 A1 FR2241911 A1 FR 2241911A1 FR 7323740 A FR7323740 A FR 7323740A FR 7323740 A FR7323740 A FR 7323740A FR 2241911 A1 FR2241911 A1 FR 2241911A1
- Authority
- FR
- France
- Prior art keywords
- phase
- control signals
- inverter
- control
- shifted
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/497—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode sinusoidal output voltages being obtained by combination of several voltages being out of phase
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The control circuit for two parallel inverters feeding a common output transformer has the phase of one inverter synchronising signal shifted forward and the phase of the other synchronising signal shifted back by the same value. The points of intersection of the periodic sawtooth synchronising signal (Us) with an adjustable d.c. control voltage are determined, and the control signals for one inverter are derived in conjunction with a first point of intersection, whilst the control signals for the second one are derived from a second point. Each inverter has a ring counter (62, 63) controlling the thyristors and supplied from an addition circuit (60, 61) which adds together the outputs from two counters (53, 54 and 55, 56). Each counter counts the output from a frequency controlled HF oscillator (50) and is itself coupled to a common control unit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7323740A FR2241911A1 (en) | 1973-06-28 | 1973-06-28 | Control circuit for two parallel inverters - has control signals obtained from ring counters and phase-shifted w.r.t. synchronizing signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7323740A FR2241911A1 (en) | 1973-06-28 | 1973-06-28 | Control circuit for two parallel inverters - has control signals obtained from ring counters and phase-shifted w.r.t. synchronizing signal |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2241911A1 true FR2241911A1 (en) | 1975-03-21 |
Family
ID=9121728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7323740A Withdrawn FR2241911A1 (en) | 1973-06-28 | 1973-06-28 | Control circuit for two parallel inverters - has control signals obtained from ring counters and phase-shifted w.r.t. synchronizing signal |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2241911A1 (en) |
-
1973
- 1973-06-28 FR FR7323740A patent/FR2241911A1/en not_active Withdrawn
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |