Patent ID: 11863067
Assignee: SUNGROW POWER SUPPLY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. The bridge cascade system according to claim 5, wherein N=2 and the phase unit comprises three bootstrap power supply circuits, which are referred to as, according to potentials from high to low: a first bootstrap power supply circuit, a second bootstrap power supply circuit, and a third bootstrap power supply circuit; and
in the phase unit:
a series arrangement of the second bootstrap power supply circuit and the third bootstrap power supply circuit is connected in parallel with the first bootstrap power supply circuit; or
a series arrangement of the first bootstrap power supply circuit and the third bootstrap power supply circuit is connected in parallel with the second bootstrap power supply circuit; or
a series arrangement of the first bootstrap power supply circuit and the second bootstrap power supply circuit is connected in parallel with the third bootstrap power supply circuit; or
a parallel arrangement of the second bootstrap power supply circuit and the third bootstrap power supply circuit is connected in series with the first bootstrap power supply circuit; or
a parallel arrangement of the first bootstrap power supply circuit and the third bootstrap power supply circuit is connected in series with the second bootstrap power supply circuit.