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1. 发明公开

EP4293891A1 MICRO-INVERTER AND GRID-TIED OUTPUT CONTROL METHOD AND DEVICE THEREFOR 审中-实审
公开(公告)号：EP4293891A1
公开(公告)日：2023-12-20
申请号：EP22814847.4
申请日：2022-04-02
申请人： Altenergy Power System Inc.
发明人： ZHOU, Dongming , YANG, Yongchun , QI, Biaojie , LUO, Yuhao , JIN, Kaifeng
IPC分类号： H02M7/5387 , H02M1/088 , H02M1/12 , H02J3/38
摘要： 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: acquiring a voltage amplitude, a frequency, and a phase of a power grid voltage by using phase locking; adjusting a power switching transistor driving an inverter full-bridge circuit to cause an output voltage of a micro-inverter to track the power grid voltage; and controlling the output switch to be turned off so that the micro-inverter works normally. According to 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, so that damage to a power switching transistor caused by a current at the moment when the output switch is turned off can be effectively avoided, thereby effectively improving the reliability and the service life of the micro-inverter.

2. 发明公开

EP4415201A1 CURRENT SOURCE RESPONSE METHOD AND APPARATUS, AND COMPUTER-READABLE STORAGE MEDIUM 审中-实审
公开(公告)号：EP4415201A1
公开(公告)日：2024-08-14
申请号：EP22912947.3
申请日：2022-02-23
申请人： Altenergy Power System Inc.
发明人： JIN, Kaifeng , ZHOU, Dongming , LUO, Yuhao
IPC分类号： H02J3/32 , H02J3/46
CPC分类号： H02J3/32 , H02J3/46
摘要： A current source response method and apparatus, and a computer-readable storage medium. The method comprises: establishing parallel control over a current source and a voltage source; acquiring a voltage value of an alternating-current bus; when the voltage value is less than a first threshold value, controlling the current source to output a current, so as to increase the voltage of the alternating-current bus; and then determining whether the voltage value exceeds a second threshold value, and if so, controlling the current source to stop outputting the current, and if not, performing power distribution on the current source and the voltage source when power synchronization is completed. It can be seen that by means of the method, when a voltage value of an alternating-current bus is greater than a first threshold value, a current is output, such that there is no need to calculate power; a current source is controlled to output the current, such that there is no need to enable the current source to output the current by transmitting the power to the current source by means of a voltage source, thereby reducing the time during which the current source outputs the current; and the voltage of the bus is measured in real time, thereby increasing the response speed of the current source, and avoiding the possibility of damage to the voltage source.

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