A multi-phase network power supply with compensation for harmonic oscillations relates to electrical engineering and is intended for supplying various electrical devices connected to a multi-phase alternating-current electrical network. The technical result of the claimed solution consists in lessening harmonic components, reducing pulsations in the voltage and current output by the power supply, and significantly reducing the required power. The multi-phase alternating-current network power supply with compensation for harmonic oscillations comprises a main multi-phase rectifier of the alternating-current network, an additional multi-phase rectifier, a controller and an additional voltage or current supply, wherein the positive terminal of the main multi-phase rectifier is capable of being connected to a load, and the negative terminal of the main multi-phase rectifier is connected to the positive terminal of the additional voltage or current supply, the negative terminal of which is capable of being connected to a load, the output terminals of the additional multi-phase rectifier are connected to the input terminals of the additional voltage or current supply, wherein the additional multi-phase rectifier is equipped with electronic switches, one in the circuit of each rectifying element, and each electronic switch is connected to the controller.