Gree Electric Appliances, Inc. of Zhuhai

Keqin Liu

Jing Wang

Shiyong Jiang

Xuefen Zhang

Peng Ren

Chongyang Feng

Zhigang Zhao

Wu Wen

Yu Zhang

Jianhua Li

Mingzhu Dong

Ningning Chen

Han Liu

Jinrong Yuan

Yingyi Jiang

Weitao Ni

Hewei Lou

Jiangxi Song

Yingshuai You

Disclosed are a photovoltaic electric appliance and a charging control method, device and circuit thereof, and a storage medium. The charging control circuit includes: a double-relay circuit and a charging relay circuit, wherein the double-relay circuit is arranged between a grid side circuit and a machine side circuit of the photovoltaic electric appliance; and the charging relay circuit is configured to turn on to realize the gradual charging of a bus capacitor when the double-relay circuit is not turned on. A charging relay circuit is added to an alternating-current power supply side, so that when double relays are not closed, a charging relay can be closed to realize the gradual charging of a bus capacitor.

Photovoltaic electric appliance and charging control method, device and circuit thereof, and storage medium

The present invention provides a power conversion method, apparatus, and device, and a medium. The power conversion apparatus comprises: a configurable input interface, a power conversion circuit, and a configurable output interface. The configurable input interface is provided to configure a first electrical connection mode between an input power supply and the power conversion circuit, and to electrically connect the input power supply to the power conversion circuit. The configurable output interface is provided to configure a second electrical connection mode between a load and the power conversion circuit, and to electrically connect the load to the power conversion circuit. The power conversion circuit is provided to perform corresponding power conversion according to a parameter of the input power supply and a parameter of the load. Embodiments of the present invention resolve the problem in the related art of poor general applicability of a power conversion apparatus, thereby improving the general applicability of the power conversion apparatus.

Power conversion method, apparatus, and device, and medium

Disclosed is a control parameter determining method for a photovoltaic air conditioning system, specifically including: determining a real-time inductance parameter of a controlled object of the photovoltaic air conditioning system according to real-time grid-connected power of the photovoltaic air conditioning system; substituting the real-time inductance parameter into the controlled object of the control system to calculate a basic control parameter of the control system; presetting a plurality of adjustment parameters corresponding to different grid-connected power respectively; when the real-time grid-connected power is matched with one of the grid-connected power, selecting an adjustment parameter corresponding to the matched grid-connected power to modify the basic control parameter, to obtain a target control parameter. The present disclosure further disclosed a control parameter determining apparatus and a control system for a photovoltaic air conditioning system.

Control parameter determining method and apparatus, and control system for photovoltaic air conditioning system

A control method for a direct current electrical device and a direct current electrical device. The method includes: acquiring input parameters of a power supply of the direct current electrical device, identifying a type of the power supply according to the input parameters, and determining an operation mode of the direct current electrical device corresponding to the type of the power supply, and controlling an operation of the direct current electrical device according to the operation mode.

Control method for direct current electrical device and direct current electrical device

A method for controlling a photovoltaic air conditioning system. The method comprises: detecting a grid frequency (); when the detected grid frequency is not equal to a pre-set frequency, calculating and obtaining a control parameter according to the detected grid frequency (); and controlling a photovoltaic air conditioning by means of the calculated and obtained control parameter (). Also disclosed is a photovoltaic air conditioning control device.

Method and device for controlling photovoltaic air conditioning system

A method, a device and a system for controlling heat dissipation of an electrical cabinet are provided. The method includes: a heating capacity in the electrical cabinet is predicted; according to the heating capacity predicted, a corresponding heat dissipation capacity is determined; and a rotational speed of a heat dissipation fan is controlled, so that a difference between the heating capacity and the heat dissipation capacity is within a predetermined range.

Method, device and system for controlling heat dissipation of electrical cabinet

The disclosure relates to the field of electronic elements, and discloses an Insulated Gate Bipolar Transistor (IGBT) module assembly which comprises a cooling plate and an IGBT module fixedly connected to the cooling plate, wiring terminals are arranged at an end face of the IGBT module, which is away from the cooling plate, the IGBT module comprises a side face adjacent to the end face, and the side face and the cooling plate form a water guiding groove. In the disclosure, the side face and the cooling plate form the water guiding groove, and a great amount of condensed water collected on the cooling plate can be guided to flow out through the water guiding groove instead of flowing to the end face of the IGBT module, on which the wiring terminals are arranged.

IGBT module assembly

A method for controlling an air conditioner outdoor unit comprises: acquiring the working mode of the air conditioner outdoor unit; acquiring sensor parameters of the air conditioner outdoor unit according to the working mode, the sensor parameters including wind direction parameters read by a wind direction sensor () or temperature parameters read by a temperature sensor (); determining control parameters for the air conditioner outdoor unit by the working mode and the sensor parameters corresponding to the working mode; driving the rotating speed of a fan () and the rotating angle of a wind direction adjusting device () by use of the control parameters. In addition, a control system for the air conditioner outdoor unit is also related to.

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Guangdong, China

Keqin Liu