DC magnetic biasing suppression method for bidirectional full-bridge DC/DC converter
A DC bias suppression and converter technology, applied in the direction of converting DC power input to DC power output, instruments, adjusting electrical variables, etc., can solve the problem of reducing the excitation inductance, increasing the cost and loss, and damaging the power of the full-bridge circuit Switch tube and other problems to achieve the effect of eliminating DC bias and suppressing bias magnetism
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[0018] Such as figure 1 As shown, a bidirectional full-bridge DC / DC converter circuit, its circuit structure is: the primary side of the high-frequency transformer T1 and the inductor L s The series connection is connected to bridge structure switch tubes Sa1 to Sa4, and the secondary side is connected to bridge structure switch tubes Sb1 to Sb4; the DC terminal V1 is between the upper and lower arms of the primary side, and the DC terminal V2 is between the upper and lower arms of the secondary side. The transformation ratio of the above-mentioned high-frequency transformer is n; the above-mentioned switch tubes are anti-parallel diodes.
[0019] Such as figure 2 As shown, the principle diagram of the control method of the present invention. In one cycle, Sa1 and Sa4 are turned on at the same time in the first half cycle, Sa2 and Sa3 remain off; Sa2 and Sa3 are turned on at the same time in the second half cycle, Sa1 and Sa4 remain off, making the primary voltage of the high-fre...
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