公开(公告)号：US20240275306A1

公开(公告)日：2024-08-15

申请号：US18563421

申请日：2022-04-02

Applicant: ALTENERGY POWER SYSTEM INC.

Inventor： Dongming ZHOU ,  Yongchun YANG ,  Biaojie QI ,  Yuhao LUO ,  Kaifeng JIN

IPC: H02M7/5387 ,  H02M1/12 ,  H02M1/32

CPC classification number: H02M7/53871 ,  H02M1/126 ,  H02M1/32

Abstract: A micro-inverter and a grid-tied output control method and device therefor. The micro-inverter comprises an inverter full-bridge circuit and an LC filter circuit. The LC filter circuit is grid-tied to a power grid by means of an output switch. The method comprises: obtaining a voltage amplitude, a frequency, and a phase of a voltage of the power grid by using phase locking; adjusting a power switching transistor driving the inverter full-bridge circuit to cause an output voltage of the micro-inverter to track the voltage of the power grid; and controlling the output switch to be switched on so that the micro-inverter operates normally. In the present application, before the output switch is turned off to grid-tie the micro-inverter, the power grid voltage is phase-locked and the output voltage of the micro-inverter is controlled to track the power grid voltage.

公开(公告)号：US20240405570A1

公开(公告)日：2024-12-05

申请号：US18699309

申请日：2022-02-23

Applicant: ALTENERGY POWER SYSTEM INC.

Inventor： Kaifeng JIN ,  Dongming ZHOU ,  Yuhao LUO

IPC: H02J3/46

Abstract: A method and a device for a current source to respond, and a computer-readable storage medium are provided. Parallel control for the current source and a voltage source is established, and a voltage across an alternating-current bus is acquired. When the voltage is lower than a first threshold, the current source outputs a current to increase the voltage across the alternating-current bus. Then, it is determined whether the voltage exceeds a second threshold. When the voltage exceeds the second threshold, the current source stops outputting the current. When the voltage does not exceed the second threshold, power is distributed between the current source and the voltage source after power synchronization. The current source directly outputs the current, and therefore unnecessarily wait for the power from the voltage source.