Interleaved Three-Phase Rectifier Dual Input Single Stage In Discontinuous Conduction Mode With Maximum Power Tracking Method For Application In Small Wind Generators

This paper presents a high gain three-phase interleaved rectifier operating in DCM, with dual input, for application in small wind generators. The two input diode bridges promote the sharing of the current efforts, resulting in a significant reduction of the converter's current efforts when compared to previous typologies. A theoretical analysis of the proposed converter was performed, followed by experimental tests using a laboratory prototype, comparing the operation with fixed frequency and variable frequency, utilizing a MPPT method, considering a power of approximately 1 kW on a 400 V DC bus. The experimental results confirmed that the rectifier operates with sinusoidal input currents, and showed a slight increase in the efficiency of the structure when working with variable frequency in relation to its operation at fixed frequency, both of which were close to 97%, with a difference of less than 1% between the two tested settings.