Boe Technology Group Co., Ltd.

Danfoss A/s

Beijing Baidu Netcom Science and Technology Co., Ltd.

Beijing Boe Energy Technology Co., Ltd.

Jia He

Jin Li

Bo Wang

Yu Chen

Hui Su

Anders Vestergaard

Xiaoyan Han

Ping Zheng

Torben Funder-Kristensen

Xianping Qu

Beibei Miao

Zhi Zang

Shimin Tao

Hans Christian Orye

Christian Eggert Mortensen

Embodiments of the present disclosure provide a disk capacity predicting method, apparatus, equipment and non-volatile computer storage medium. On the one hand, the change data of the disk capacity is obtained according to the historical capacity data of the disk; then the target inflection point in the historical capacity data is obtained according to the change data of the disk capacity; and then the linear relationship between the time and disk capacity is obtained according to the historical capacity data after the target inflection point. Therefore, technical solutions provided by embodiments of the present disclosure may achieve improvement of accuracy of prediction of disk capacity trend and reduce the cost needed in disk capacity prediction.

Disk capacity predicting method, apparatus, equipment and non-volatile computer storage medium

A maximum power point tracking method, device and a photovoltaic power generation system. The maximum power point tracking method involves sampling a present voltage and a present current of a photovoltaic array and obtaining a present power based on the present voltage and the present current. The maximum power point tracking using a difference between the present power and a power for a previous sampling time as a present perturbation power, and based on a ratio of the present perturbation power to a perturbation power for a previous sampling time obtain a gradient perturbation voltage step ratio. Further, the maximum power point tracking obtains a perturbation voltage step based on the gradient perturbation voltage step ratio and the voltage difference between the present voltage and the voltage for the previous sampling time, and control an output voltage based on the perturbation voltage step.

Maximum power point tracking method and device, and photovoltaic power generation system

The invention provides a method of making a component from first and second parts which are joined in a welding process wherein a laser beam is transmitted in a direction from a laser source and at least partly into a gap. The gap is made between edges of the component, and to enable a faster laser welding process, the laser has a focus point size which is at least of the size of the gap. To enable better control of the width of the gap, the invention further provides a method and components wherein one part is formed with a neck which extends into a complementary socket of the other part to prepare the parts for the welding process. The invention in particular concerns welding of brass.

Laser welding process

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Beijing, China

Jia He