Abstract: A fault detection method includes: sequentially transmitting a first control signal to control chips corresponding to each of the plurality of battery switches after detecting a reverse feeding fault, when the plurality of battery switches are turned on and the plurality of utility power switches are turned off, causing a corresponding battery switch to be turned off; and detecting a difference between a front and a back terminal voltage of each of the plurality of utility power switches connected to the corresponding battery switch when the corresponding battery switch is turned off, where each of the plurality of utility power switches is off; determining that the plurality of utility power switches are short-circuited when a difference between the front terminal voltage and the back terminal voltage of at least one of the plurality of utility power switches is greater than or equal to a preset threshold; otherwise, determining that the plurality of utility power switches are normal.

Abstract: A prefabricated air-liquid integrated cabinet is disclosed to simplify wiring and pipeline connection work and reduce on-site installation and configuration work. The cabinet includes: a PDU integrated in the cabinet, an rack-based CDU, a liquid distribution unit, an air-liquid heat exchanger, a monitoring platform, and a plurality of monitoring units, wherein the PDU is connected with a power supply through a power supply interface; a primary side of the CDU is connected with a cold source through a heat exchange interface, and a secondary side of the CDU provides a cooling medium for the liquid distribution unit and the air-liquid heat exchanger; the liquid distribution unit is connected to a cold plate liquid cooling server, and supplies the cooling medium to the server; the air-liquid heat exchanger dissipates heat from the cabinet; and the monitoring platform acquires state parameters of the cabinet through the monitoring units.

Abstract: Provided in the present disclosure are a cabinet heat dissipation system and a control method and device thereof, for achieving a one-stop management of heat dissipation of a cabinet and improving an intelligence degree of heat dissipation control of the cabinet.

Abstract: Provided are a power module and a power distribution system. The power module includes an input busbar, an output busbar, an internal protection unit and a UPS. The input busbar is electrically connected to an AC input terminal of the UPS through the internal protection unit. The output busbar is electrically connected to an AC output terminal of the UPS through the internal protection unit. The battery input terminal is electrically connected to a DC input terminal of the UPS through the internal protection unit, or is electrically connected to the DC input terminal of the UPS and an external protection unit disposed outside the power module. The input busbar and the output busbar are disposed outside the UPS without passing through the inside of the UPS. The AC input terminal, the AC output terminal and the DC input terminal are all electrically connected to the protection unit.

Abstract: A rectifier converter of the UPS includes a rectifier discharge reuse module, a first mains switching module, a second mains switching module and a battery switching module. The rectifier discharge reuse module includes a filtering unit and a rectifier discharge unit that are connected to each other; the battery switching module is connected between a battery power supply and the filtering unit, and operates in a case that the battery power supply supplies power to the rectifier converter; and the first mains switching module is connected between a mains power supply and the filtering unit, the second mains switching module is connected between the filtering unit and the rectifier discharge unit, and the first mains switching module and the second mains switching module operate in a case that the mains power supply supplies power to the rectifier converter.

Abstract: Provided are a method and a system for predicting a lifespan of a fan, a fan, a storage medium and a program product. The method includes: acquiring an ambient temperature of the fan; calculating a mechanical factor lifespan and an environmental factor lifespan of the fan, in a case where the ambient temperature of the fan meets a first condition; and fusing the mechanical factor lifespan and the environmental factor lifespan to output a remaining lifespan of the fan. By fusing the mechanical factor lifespan and the environmental factor lifespan of the fan, an accuracy in predicting a lifespan of the fan is improved, without increasing costs, and the remaining lifespan of the fan can be outputted in real time. Further, by monitoring the remaining lifespan of the fan, an effect of good thermal management performance and an extended lifespan of an equipment can be achieved.

Abstract: Provided are an uninterruptible power supply (UPS), a method and an apparatus for soft starting the UPS, and a controller. In the UPS, an inverter circuit is provided with three-phase output terminals, and two output terminals of a pre-charge circuit are electrically connected to output terminals of any two phases, respectively. The UPS charges a bus capacitor through an energy storage operation and a freewheeling operation, so that a voltage of the bus capacitor is greater than a peak value of a mains power. When the mains relay is powered on, a voltage of an end of the mains relay that is electrically connected to the mains power is lower than the voltage of the bus capacitor. Due to limitation of a conduction direction in a rectification circuit, no inrush current occurs, thereby reducing arcing of relay contacts and improving stability of the UPS during a power-on process.

Abstract: A fault detection and processing method and apparatus for an uninterruptible power supply, and a controller are provided. The current at at least one sampling point to-be-tested in at least one fault circuit to-be-detected in the uninterruptible power supply is sampled, and the sampled current is compared with a corresponding fault current range to determine a faulty device causing an abnormal current in the fault circuit to-be-detected. Based on the faulty switching device, the operation state of a rectification and discharge multiplexing circuit is adjusted in order to cut off the fault circuit where the faulty switching device is located, and to timely stop the impact of the fault current on the uninterruptible power supply, thereby ensuring the reliability of the power supply system.

Abstract: Provided in the present disclosure are a method, an apparatus and a controller for fault detection of an uninterruptible power supply. A second terminal of a mains power switch device in the uninterruptible power supply is electrically connected to a corresponding battery switch device. Before the mains power switch device is closed, a comparison is made, by the controller, between the voltage value of the second terminal of the mains power switch device and the voltage value of the battery positive access terminal/battery negative access terminal associated with the mains power switch device. In a case where the absolute value of the difference between the two voltages is less than or equal to the first preset voltage difference, it is determined that the absolute value of the originally large voltage difference is reduced due to a failure of the battery switch device.

Abstract: Disclosed is a prefabricated alternating-current integrated power module, including a modular low-voltage input and bus coupling device, a low-voltage compensation device, a maintenance bypass device, an uninterruptable power supply power module device and an uninterruptable power supply feed device, which are detachably connected along a horizontal direction. All the devices and connection components among the devices of the prefabricated alternating-current integrated power module are prefabricated in the factory, greatly reducing the footprint, and achieving rapid delivery and deployment at the customer's site. With the prefabricated alternating-current integrated power module, the uninterruptable power supply power module device can be repaired or replaced without powering off the system. Further, capacity expansion and quick deployment can be performed without powering off the system, eliminating the impact of power outage operation.

Abstract: The present disclosure relates to the field of power supply technology, and discloses a power distribution module allowing maintenance without power interruption and power distribution system. The power distribution module includes a cabinet and a mains horizontal busbar unit, a distribution busbar unit, an input switch unit, an input connection unit, an output connection unit, an output switch unit, an output horizontal busbar unit and a UPS unit which are installed in the cabinet in a modular design. The cabinet includes a rack and an isolation housing for insulation isolation assembled on the rack.

Abstract: Provided are a power module and a power distribution system. The power module includes an input busbar, an output busbar, an internal protection unit and a UPS. The input busbar is electrically connected to an AC input terminal of the UPS through the internal protection unit. The output busbar is electrically connected to an AC output terminal of the UPS through the internal protection unit. The battery input terminal is electrically connected to a DC input terminal of the UPS through the internal protection unit, or is electrically connected to the DC input terminal of the UPS and an external protection unit disposed outside the power module. The input busbar and the output busbar are disposed outside the UPS without passing through the inside of the UPS. The AC input terminal, the AC output terminal and the DC input terminal are all electrically connected to the protection unit.

Abstract: A silicon controlled rectifier soaking control method and apparatus, and a computer-readable storage medium. The method comprises: acquiring heating parameters of at least two silicon controlled rectifiers connected in parallel (ST1), wherein the at least two silicon controlled rectifiers comprise a first silicon controlled rectifier and a second silicon controlled rectifier, and the heating parameters comprise a first heating parameter of the first silicon controlled rectifier and a second heating parameter of the second silicon controlled rectifier; comparing the first heating parameter and the second heating parameter with a set threshold value, and adjusting trigger angles of the first silicon controlled rectifier and/or the second silicon controlled rectifier on the basis of the comparison results (ST2); and repeatedly executing step ST1 and step ST2 until a difference value between the first heating parameter and the second heating parameter is within a set difference value range (ST3).

Abstract: An air conditioning unit includes: a first refrigeration system including a first evaporator, a first compressor, a first condenser, a first one-way valve, and a first throttling element connected in sequence in a loop as well as a second one-way valve connected in parallel with the first compressor, and a first fluorine pump connected in parallel with the first one-way valve; and a second refrigeration system including a second evaporator, a second compressor, a second condenser, a third one-way valve, and a second throttling element connected in sequence in a loop as well as a fourth one-way valve connected in parallel with the second compressor, and a second fluorine pump connected in parallel with the third one-way valve, where the first evaporator and the second evaporator are arranged front and rear in sequence along a return air cooling duct.

Abstract: Disclosed are a power supply module housing and a power supply module comprising same. The power supply module housing comprises a main housing, the main housing is provided with a maintenance and installation opening for facilitating the maintenance and installation of the power supply module, and a skylight cover plate detachably covers the maintenance and installation opening. The power supply module comprises the power supply module housing, a connecting terminal is installed in the power supply module housing, and the skylight cover plate is provided at the position corresponding to the connecting terminal. According to the present application, additionally providing the maintenance and installation opening and the skylight cover plate on a top cover enables wiring to be performed without removing the top cover in a field wiring work, thereby simplifying the steps of field wiring, and reducing the risk during work at height.

Abstract: A rectifier converter of the UPS includes a rectifier discharge reuse module, a first mains switching module, a second mains switching module and a battery switching module. The rectifier discharge reuse module includes a filtering unit and a rectifier discharge unit that are connected to each other; the battery switching module is connected between a battery power supply and the filtering unit, and operates in a case that the battery power supply supplies power to the rectifier converter; and the first mains switching module is connected between a mains power supply and the filtering unit, the second mains switching module is connected between the filtering unit and the rectifier discharge unit, and the first mains switching module and the second mains switching module operate in a case that the mains power supply supplies power to the rectifier converter.

Abstract: An air conditioning unit includes: a first refrigeration system including a first evaporator, a first compressor, a first condenser, a first one-way valve, and a first throttling element connected in sequence in a loop as well as a second one-way valve connected in parallel with the first compressor, and a first fluorine pump connected in parallel with the first one-way valve; and a second refrigeration system including a second evaporator, a second compressor, a second condenser, a third one-way valve, and a second throttling element connected in sequence in a loop as well as a fourth one-way valve connected in parallel with the second compressor, and a second fluorine pump connected in parallel with the third one-way valve, where the first evaporator and the second evaporator are arranged front and rear in sequence along a return air cooling duct.

Abstract: Disclosed are a power supply module housing and a power supply module comprising same. The power supply module housing comprises a main housing, the main housing is provided with a maintenance and installation opening for facilitating the maintenance and installation of the power supply module, and a skylight cover plate detachably covers the maintenance and installation opening. The power supply module comprises the power supply module housing, a connecting terminal is installed in the power supply module housing, and the skylight cover plate is provided at the position corresponding to the connecting terminal. According to the present application, additionally providing the maintenance and installation opening and the skylight cover plate on a top cover enables wiring to be performed without removing the top cover in a field wiring work, thereby simplifying the steps of field wiring, and reducing the risk during work at height.

Abstract: The present invention discloses a skylight operating system of a modular data center, so as to timely respond to a firefighting requirement of the modular data center to reduce occurrence of firefighting-related accidents. The skylight operating system comprises: an electric skylight; a firefighting environment index monitoring device arranged inside the modular data center; a monitoring and interacting device arranged in a monitoring room outside the modular data center, and connected with the electric skylight and the firefighting environment index monitoring device, the monitoring and interacting device adapted for receiving monitoring information of the firefighting environment index monitoring device, and opening the electric skylight upon determination that a firefighting-related issue occurs inside the modular data center.