Patent ID: 11862377
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A transformer, comprising:
a magnetic core comprising a first magnetic cylinder and a second magnetic cylinder, one end of the first magnetic cylinder is coupled to one end of the second magnetic cylinder and the other end of the first magnetic cylinder is coupled to the other end of the second magnetic cylinder, to form an annulus;
one or more primary-side windings are wound around the first magnetic cylinder and the second magnetic cylinder, and the one or more primary-side windings are connected to a first primary-side switch circuit; when the first primary-side switch circuit supplies power to the one or more primary-side windings, a magnetic flux is generated around the one or more primary-side windings on the first magnetic cylinder and the second magnetic cylinder; and a direction of a magnetic flux generated on the first magnetic cylinder is the same as a direction of a magnetic flux generated on the second magnetic cylinder;
a fractional turn of a first secondary-side winding is separately wound around the first magnetic cylinder and the second magnetic cylinder, the first secondary-side winding is configured to induce the magnetic flux on the first magnetic cylinder or the second magnetic cylinder to generate a current;
wherein the first secondary-side winding is connected to a secondary-side rectifier circuit, wherein
the secondary-side rectifier circuit comprises a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, and four capacitor groups, wherein each capacitor group comprises at least one capacitor or at least two capacitors connected in parallel;
the first secondary-side winding, a second secondary-side winding, a third secondary-side winding, and a fourth secondary-side winding are wound around the first magnetic cylinder, wherein
one end of the first secondary-side winding is connected to a positive pole of a second capacitor group, and the other end of the first secondary-side winding is connected to a negative pole of a first capacitor group by using the first switch,
one end of the second secondary-side winding is connected to the positive pole of the second capacitor group, and the other end of the second secondary-side winding is connected to the negative pole of the first capacitor group by using the second switch,
one end of the third secondary-side winding is connected to a positive pole of the first capacitor group, and the other end of the third secondary-side winding is connected to a negative pole of the second capacitor group by using the third switch, and
one end of the fourth secondary-side winding is connected to the positive pole of the first capacitor group, and the other end of the fourth secondary-side winding is connected to the negative pole of the second capacitor group by using the fourth switch; and
a fifth secondary-side winding, a sixth secondary-side winding, a seventh secondary-side winding, and an eighth secondary-side winding are wound around the second magnetic cylinder, wherein
one end of the fifth secondary-side winding is connected to a positive pole of a fourth capacitor group, and the other end of the fifth secondary-side winding is connected to a negative pole of a third capacitor group by using the fifth switch,
one end of the sixth secondary-side winding is connected to the positive pole of the fourth capacitor group, and the other end of the sixth secondary-side winding is connected to the negative pole of the third capacitor group by using the sixth switch,
one end of the seventh secondary-side winding is connected to a positive pole of the third capacitor group, and the other end of the seventh secondary-side winding is connected to a negative pole of the fourth capacitor group by using the seventh switch, and
one end of the eighth secondary-side winding is connected to the positive pole of the third capacitor group, and the other end of the eighth secondary-side winding is connected to the negative pole of the fourth capacitor group by using the eighth switch.