公开(公告)号：US11075522B2

公开(公告)日：2021-07-27

申请号：US16258897

申请日：2019-01-28

Applicant: ABB Schweiz AG

Inventor： Junjie Ge ,  Xing Huang ,  Hailian Xie

IPC: H02J3/38 ,  G05F1/67 ,  G05F1/10 ,  H01L31/02 ,  H02J7/35

Abstract: A control system and photovoltaic system and micro-grid using the same and method thereof. The control system for controlling a photovoltaic converter includes: a first input, for receiving first signals indicating first sampling values of an input current of the photovoltaic converter provided by a solar panel; a second input, for receiving second signals indicating second sampling values of an input voltage of the photovoltaic converter provided by the solar panel; a third input, for receiving third signals indicating third sampling values of an output voltage of the photovoltaic converter; and a controller, for first regulating the output voltage of the photovoltaic converter in a direction towards a reference voltage based on the third sampling value by regulating the input voltage by first voltage change of a first predetermined level; wherein: the controller is further adapted for monitoring a trend of the input voltage and power provided by the solar panel based on the first sampling values and the second sampling values for the previous sampling time points and the current sampling time point, and suspending the first regulation in case that the trend changes. This allows for an improvement of transient response of the control system and preventing possible overshooting of a lower input voltage even when the solar panel operating point is relatively far away from the MPP.

公开(公告)号：US10578082B2

公开(公告)日：2020-03-03

申请号：US15631768

申请日：2017-06-23

Applicant: ABB Schweiz AG

Inventor： Yao Chen ,  Xing Huang

IPC: F03D9/25 ,  H02J3/38 ,  F03D7/02 ,  F03D7/04 ,  H02S10/10 ,  H02J11/00

Abstract: A method and a control system using the same for coordinating control of a plurality of wind turbines of a wind farm during a fault in a utility grid to which power is to be delivered via at least one cable of the wind farm. The method includes: opening each of the electrical connections; selecting at least one wind turbine of the plurality of wind turbines according to a criteria where a sum of value for active power supply that is available from the selected at least one generator is equal or above a sum of values for active power consumption that is consumable by the energy storage system of the selected at least one wind turbine, the auxiliary equipment of the selected at least one wind turbine and the substation level auxiliary equipment; activating the selected wind turbine; for the selected wind turbine: electrically connecting the power input of its converter to the power output of its generator, electrically connecting the power output of its converter to the power input of its auxiliary equipment, the power input of its energy storage system and the corresponding cable, and electrically connecting the power input of a substation level auxiliary equipment to the cable which is electrically connected to the selected wind turbine; the activated wind turbine acting as active power supply for the substation level auxiliary equipment. The method and the control system using the same provide an effective and economic way of using the power generated by the wind turbine generator for powering the auxiliary equipment of the wind turbine, charging the energy storage system of the wind turbine and powering the substation level auxiliary equipment, during the wind farm operates in an islanding mode.

公开(公告)号：US10137796B2

公开(公告)日：2018-11-27

申请号：US14896170

申请日：2014-10-31

Applicant: ABB Schweiz AG

Inventor： Xing Huang ,  Rongrong Yu ,  Yao Chen ,  Hector Zelaya De La Parra

IPC: H02J7/00 ,  B60L11/18 ,  H02J3/14 ,  H02J3/32 ,  H02J3/38 ,  H02J13/00

Abstract: A control system for an electric vehicle charging station (EVCS) is provided, the control system comprises: a central controller configured to receive an ancillary service order from a power grid and distribute the ancillary service order to one or more local controllers periodically; and the one or more local controllers configured to control a plurality of electric vehicle supply devices based on the distributed ancillary service order in real time. The method controlling the electric vehicle charging station (EVCS) is also provided.