公开(公告)号：US20240039289A1

公开(公告)日：2024-02-01

申请号：US18265946

申请日：2021-12-07

Applicant: ALTENERGY POWER SYSTEM INC.

Inventor： Yongchun YANG ,  Guoyong HUA ,  Biaojie QI ,  Yuhao LUO

IPC: H02J3/38 ,  H02J3/46

CPC classification number: H02J3/381 ,  H02J3/46 ,  H02J2300/24

Abstract: A power supply system and a solar photovoltaic inverter, a DC/DC module and a rectification module. Since a power supply outputted from a solar panel is low-voltage power, the power supply at an output end of the solar panel can be directly supplied to a DC driving module and a DC side circuit. Since a power supply outputted from a main transformer is high-voltage power, the AC outputted from the main transformer can be directly supplied to an inverter driving module, a rectification driving module, and an AC side circuit, without additionally providing an auxiliary power supply for high-voltage isolation, namely, without additionally providing a switching circuit, a transformer, a second rectifier module, and a third rectifier module, thereby avoiding the noise and power consumption caused by frequent ON or OFF of the switching circuit, and reducing the cost.

公开(公告)号：US11695350B2

公开(公告)日：2023-07-04

申请号：US17610452

申请日：2020-02-17

Applicant: ALTENERGY POWER SYSTEM INC.

Inventor： Jian Wu ,  Biaojie Qi ,  Yongchun Yang ,  Yuhao Luo

IPC: H02M7/5387 ,  H02S40/32 ,  H02M1/12

CPC classification number: H02M7/5387 ,  H02M1/126 ,  H02S40/32

Abstract: A three-phase grid-connected inverter, and a method and a device for controlling the three-phase grid-connected inverter are provided. The method is applied to a three-phase three-leg grid-connected inverter. A structure of the three-phase three-leg grid-connected inverter is improved, so that a filter capacitor (C1, C2, and C3) is connected to a negative electrode of a direct current input bus to form a harmonic bypass circuit. Inverter devices connected in parallel in the system operate stably without increase of inductance of an inductor (L1, L2, L3). In addition, the three-phase three-leg grid-connected inverter according to the present disclosure operates in a discontinuous mode of inductor current (iL1, iL2, and iL3). That is, in the process that a power switch transistor (Q1, Q2, Q3, Q4, Q5 and Q6) on bridge legs is turned on, the inductor current (iL1, iL2, and iL3) drops to zero.

公开(公告)号：US09543854B2

公开(公告)日：2017-01-10

申请号：US14160478

申请日：2014-01-21

Applicant: Altenergy Power System, Inc.

Inventor： Yuhao Luo ,  Dongming Zhou

IPC: H02M7/42 ,  H02M7/493 ,  H02M1/00 ,  H02J3/26

CPC classification number: H02M7/42 ,  H02J3/26 ,  H02M7/493 ,  H02M2001/0032 ,  Y02B70/16 ,  Y02E10/56 ,  Y02E40/50 ,  Y10T307/707

Abstract: The invention provides a solar photovoltaic three-phase micro-inverter system comprising a plurality of three-phase micro-inverters. Every three of the three-phase micro-inverters form a group and are coupled to a three-phase AC power grid. Each of the three-phase micro-inverters comprises 3 single-phase inverter circuits, each of the single-phase inverter circuits comprises 2 conversion circuits, and each of the conversion circuits corresponds to one phase of the three-phase AC power grid. AC outputs of the same conversion circuits of the three micro-inverters in one group are coupled to three-phase live wires of the three-phase AC power grid respectively. Accordingly, the invention provides a method for improving conversion efficiency of the solar photovoltaic three-phase micro-inverter system.

Abstract translation: 本发明提供一种包括多个三相微逆变器的太阳能光伏三相微逆变器系统。 三相微逆变器中的每三个组成一组并耦合到三相交流电网。 每个三相微逆变器包括3个单相逆变器电路，每个单相逆变器电路包括2个转换电路，并且每个转换电路对应于三相交流电网的一相。 一组三个微逆变器的相同转换电路的交流输出分别耦合到三相交流电网的三相带电线。 因此，本发明提供了一种提高太阳能光伏三相微逆变器系统的转换效率的方法。

公开(公告)号：US20140062198A1

公开(公告)日：2014-03-06

申请号：US14076006

申请日：2013-11-08

Applicant: Altenergy Power System, Inc.

Inventor： Yuhao LUO

IPC: H02J3/38

CPC classification number: H02J3/38 ,  H02J3/385 ,  H02M1/14 ,  H02M7/4807 ,  Y02E10/58 ,  Y10T307/492

Abstract: The invention provides a solar photovoltaic three-phase micro-inverter, comprising DC terminals, connected with three DC photovoltaic assemblies for receiving DC; three single-phase inverter circuits, having DC input terminals connected with the DC photovoltaic assemblies via the terminals, for converting the DC to AC; AC terminals, connected with the AC output terminals of the inverter circuits and a three-phase AC power grid, for outputting the AC generated by the inverter circuits; wherein DC input terminals of each inverter circuit are connected in parallel with each other, and AC output terminals are connected with one phase of the three-phase AC power grid and a neutral wire via the AC terminals. The invention further provides a solar photovoltaic generation system. The invention connects DC sides of three single-phase inverter circuits in parallel, which can simply eliminate ripple power at DC side input terminals in a three-phase micro-inverter.

Abstract translation: 本发明提供了一种太阳能光伏三相微逆变器，包括直流端子，与三个用于接收直流的DC光伏组件连接; 三个单相逆变器电路，具有通过端子与DC光伏组件连接的DC输入端，用于将DC转换成AC; 与逆变器电路的交流输出端子连接的交流端子和三相交流电网，用于输出由逆变器电路产生的交流; 其中每个逆变器电路的直流输入端子彼此并联连接，并且AC输出端子通过AC端子与三相交流电网和中性线的一相连接。 本发明还提供了一种太阳能光伏发电系统。 本发明并联三相逆变电路的直流侧，可以简单地消除三相微逆变器直流侧输入端的纹波功率。