Multi-level rectifying T-shaped converter topological structure
A multi-level rectification and topology technology, which is applied in the direction of converting irreversible AC power input to DC power output, etc., can solve the problem that the voltage of each capacitor is not easy to balance, multi-level restrictions, increase the cost and volume of power electronic conversion devices, etc. problem, to achieve the effect of reducing the number, good expansion, and increasing the number of levels
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[0017] The present invention will be further described in conjunction with accompanying drawing:
[0018] figure 1 Circuit schematic diagram for a single bridge arm, through C T1 、C T2 ...C Tk-1 、C Tk , C B1 、C B2 ...C Bk-1 、C Bk A total of 2k capacitors constitute the vertical axis of the T-type converter; through S 1 , S 2 ... S k-1 , S k A total of k bidirectional controllable switches constitute the transverse axis of the T-type converter, and the bidirectional controllable switch can be realized by two IGBTs in reverse series or other semiconductor devices capable of realizing bidirectional switching functions and their topological circuits.
[0019] bi-directional switch S i , S i+1 Node D between (i=1, 2...k-1) i and capacitance C Ti 、C Ti+1 Node D between (i=1, 2...k-1) Ti between is controlled by the unidirectional switch S Tk1 , S Tk2 ... S Tk(2k) Constitute a one-way rectification branch flowing from the horizontal axis to the vertical axis, at n...
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