CONTROL METOD FOR FOUR STATIC STABILISED DC VOLTAGE SOURCES, WORKING IN PARALLEL ACROSS COMMON LOAD Russian patent published in 2009 - IPC H02J1/10 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used in designing systems for generating electrical energy or systems for guaranteed electrical power supply, in which static stabilised electric power sources are connected in parallel across a common load so as to achieve reliable power supply and increase output power. In the proposed method, instantaneous values of output voltage and current are measured for each source. A reference voltage signal is generated. Voltage is generated, proportional to the current difference. A composite signal is generated by summing up voltage, proportional to the current difference of the sources and a signal, proportional to the output voltage of the source. A comparison signal is generated, proportional to which a control signal is generated. The said comparison signal is generated by integrating the difference between the reference voltage signal and the composite signal. When generating voltage proportional to the current difference, two components are used, the first of which is the current difference between two sources, multiplied by a constant, and the second is a current difference between two other sources with a unit coefficient of proportionality. Each current difference is used once when generating the first or second component.

EFFECT: increased stability of voltage across a common load and uniformity of load current distribution between sources in static mode.

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