FIELD: electricity.
SUBSTANCE: according to the invention a device (32, 34) intended for the device (30, 22) power supply operating from the three-phase power supply in standard mode, ensures the operation from the single-phase power supply. The device as disclosed by the invention uses evaluation of the in-phase component based on the voltage measured on leads connected to single-phase power supply. Quadrature-phase component is evaluated based on numerical derivative of in-phase component. In-phase component is also supplied to current controller as anticipatory input signal in order to minimize errors.
EFFECT: possibility of three-phase device operation from single-phase power supply.
15 cl, 5 dwg
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