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The general characteristic of power electronic couplers for alternative energy sources with electrical power grid was presented. The power electronic current source, working as a closed loop system, generating sine wave shaped current transfering the energy to the grid was discussed. The chosen results of simulation model of such system for sinusoidal reference signals were presented. The test results of the laboratory prototype were also presented.

The paper considers Generator of the Spatial Magnetic Field for medicine purposes. One of essential blocks there is three-channel power electronics current source, powering set of space oriented induction coils (electromagnets)sources of magnetic field. The control module utilizes DSP based microcomputer for power electronics applications. The microcomputer is integrated with industrial PC in form of PCI card. The execution block utilizes three power electronics inverters, utilizing PWM strategy. The paper describes fundamentals of current source control algorithms and test results of laboratory model of generator.

No abstract