FIELD: electrical engineering.
SUBSTANCE: invention relates to electrical engineering and may be used for electric power generation system building-up or uninterruptible power supply where static stabilised electric power sources are switched in parallel to the common load in order to achieve technical result of the invention - improved reliability of power supply and increase output power. Momentary values of output voltage and current are measured for each source and reference voltage signal is measured. Then voltage proportional to the difference of source currents is also defined and added to the output voltage of the source. After that, comparison signal is generated and in proportion to the comparison signal, a control signal is generated. The above mentioned comparison signal is generated by integrating difference between reference voltage signal and composite signal. When voltage proportional to currents difference is generated, the difference of only two currents with similar weight factors is used, namely the difference of the given and the other sources currents or the difference of the other sources currents. Besides, each difference of currents is used only once when composite signals are generated.
EFFECT: proposed method increases voltage stability at common voltage and improves even distribution of load current among sources in static mode.
1 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| CONTROL METOD FOR FOUR STATIC STABILISED DC VOLTAGE SOURCES, WORKING IN PARALLEL ACROSS COMMON LOAD | 2008 |
|
RU2362249C1 |
| METHOD FOR CONTROL OF STATIC STABILISED AC VOLTAGE SOURCES, WORKING IN PARALLEL FOR COMMON LOAD | 2008 |
|
RU2380820C1 |
| METHOD TO CONTROL STATIC STABILISED AC VOLTAGE SOURCES OPERATED IN PARALLEL TO COMMON LOAD | 2008 |
|
RU2379812C1 |
| METHOD TO CONTROL STATIC STABILISED SOURCES OF AC VOLTAGE OPERATING IN PARALLEL FOR COMMON LOAD IN CASE OF ITS ASYMMETRY | 2011 |
|
RU2472269C1 |
| METHOD TO CONTROL STATIC STABILISED SOURCES OF AC VOLTAGE OPERATING IN PARALLEL FOR COMMON LOAD | 2011 |
|
RU2472268C1 |
| METHOD TO CONTROL STATIC STABILISED SOURCES OF AC VOLTAGE OPERATING IN PARALLEL FOR COMMON LOAD | 2011 |
|
RU2472281C1 |
| METHOD TO CONTROL STATIC STABILISED SOURCES OF AC VOLTAGE OPERATING IN PARALLEL FOR COMMON LOAD IN CASE OF ITS ASYMMETRY | 2011 |
|
RU2460194C1 |
| METHOD FOR CONTROL OF STATIC STABILIZED AC VOLTAGE SOURCES OPERATING IN PARALLEL TO COMMON LOAD | 2003 |
|
RU2256274C1 |
| METHOD OF CONTROL OF STATIC FREQUENCY CONDERTERS PARALLEL-OPERATING FOR COMMON LOAD | 0 |
|
SU966841A1 |
| METHODS FOR CONTROL OF STATIC STABILISED AC VOLTAGE SOURCES WORKING IN PARALLEL FOR COMMON LOAD | 2010 |
|
RU2452076C2 |
