A five-level double-buck grid-connected inverter
A dual step-down, inverter technology, used in electrical components, single-grid parallel feeding arrangements, conversion of AC power input to DC power output, etc.
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Embodiment 1
[0075] like figure 2 As shown, the common mode inductor branch 4 includes the first common mode filter inductor L m1 and a second common-mode filter inductor L m2 .
[0076] Input DC source U dc The positive output terminals of the first divider capacitor C dc1 positive pole of the first power switch tube S 1 The drain and the third power switch S 3 The drain connection of the input DC source U dc The negative output terminals are respectively connected to the second voltage dividing capacitor C dc2 The negative pole of the second power switch tube S 2 source of the fourth power switch S 4 The source connection; the first voltage divider capacitor C dc1 The negative pole of the second voltage dividing capacitor C dc2 The anode of the third power diode D 3 The anode of the fourth power diode D 4 The cathode connection; the third power diode D 3 The cathode and the seventh power switch S 7 The drain connection of the seventh power switch tube S 7 The sources of t...
Embodiment 2
[0090] Such as Figure 5 As shown, the common mode inductance branch 4 includes the common mode filter inductance L m .
[0091] Input DC source U dc The positive output terminals are respectively connected to the first voltage dividing capacitor C dc1 positive pole of the first power switch tube S 1 The drain and the third power switch S 3 The drain connection of the input DC source U dc The negative output terminals are respectively connected to the second voltage dividing capacitor C dc2 The negative pole of the second power switch tube S 2 source of the fourth power switch S 4 The source connection; the first voltage divider capacitor C dc1 The negative pole of the second voltage dividing capacitor C dc2 The anode of the third power diode D 3 The anode of the fourth power diode D 4 The cathode connection; the third power diode D 3 The cathode and the seventh power switch S 7 The drain connection of the seventh power switch tube S 7 The sources of the first po...
Embodiment 3
[0094] Such as Image 6 As shown, the common mode inductance branch 4 includes the common mode filter inductance L m .
[0095] Input DC source U dc The positive output terminals are respectively connected to the first voltage dividing capacitor C dc1 positive pole of the first power switch tube S 1 The drain and the third power switch S 3 The drain connection of the input DC source U dc The negative output terminals are respectively connected to the second voltage dividing capacitor C dc2 The negative pole of the second power switch tube S 2 source of the fourth power switch S 4 The source connection; the first voltage divider capacitor C dc1 The negative pole of the second voltage dividing capacitor C dc2 The anode of the third power diode D 3 The anode of the fourth power diode D 4 The cathode connection; the third power diode D 3 The cathode and the seventh power switch S 7 The drain connection of the seventh power switch tube S 7 The sources of the first pow...
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