A plasma energy converter and an electromagnetic reactor used for producing said converter are claimed. The invention relates to methods and devices of plasma physics., in particular to systems used for the electromagnetically confining a high-energy plasma in such a way that the conditions for carrying out high-temperature reactions, including a controlled nuclear fusion reaction, are formed. The invention comprises a working chamber provided with a working medium which is placed in the field of an electromagnetic system for confining and heating a plasma. Said system consists of at least two electromagnetic vortex reactors having opposite charges and mutually oppositely oriented spins, the vortex fields of which are located in the working chamber. The reactors comprise a working chamber and a system for initiating the plasma state of the working medium. Said system for initiating the plasma state of the working medium comprises the concentrator of a microwave vortex electromagnetic field, the axis of which coincides with the axis of the reactor vortex field.