Abstract: The application discloses an inverter and a photovoltaic and energy storage system. The inverter includes a first cabinet configured for being fixed on a mounting surface and a second cabinet configured for being fixed on the mounting surface, where the first cabinet is provided with a first connection terminal, the second cabinet is provided with a second connection terminal, the first connection terminal and the second connection terminal are configured for plugging along a direction that the first cabinet moves to the mounting surface, and the first connection terminal and the second connection terminal are plugged with each other when the first cabinet is located on the mounting surface. The inverter described above simplifies assembly of the first cabinet and the second cabinet, thereby simplifying mounting of the inverter.

Abstract: A wiring structure and a photovoltaic system are provided in the present application. The wiring structure is used to electrically connect two electronic devices or to electrically connect one electronic device with an external circuit. The electronic device includes a housing and an electronic component located inside the housing. The wiring structure comprises a first terminal, which is provided on the housing and electrically connected to the electronic component; and a second terminal, which includes a quick-connecting terminal and an electrical connection module that are electrically connected to each other. The quick-connecting terminal is connected to the first terminal, and the electrical connection module is configured to electrically connect the electronic device or the external circuit.

Abstract: An energy storage power supply includes an energy storage inverter and multiple battery modules, and the multiple battery modules are arranged in any horizontal direction and are connected in series and/or in parallel with each other, the energy storage inverter is arranged above any one of the multiple battery modules, and the energy storage inverter is connected in series and/or in parallel with the battery module arranged below the energy storage inverter. The energy storage power supply realizes a conversion between direct current and alternating current by connecting the energy storage inverter and the multiple battery modules in series and/or in parallel with each other, and reduces an overall height of the energy storage power supply by arranging the battery modules and a base in any horizontal direction, which facilitates subsequent overhaul and maintenance.

Abstract: The present application relates to the technical field of semiconductor, and in particular to an inverter. The inverter provided by the present application includes a substrate, a discrete device and a heat conducting component. The discrete device and the heat conducting component are both arranged on the substrate. A part of the heat conducting component is located in an area of the substrate where the discrete device is provided, and another part of the heat conducting component is located in an area of the substrate where the discrete device is not provided. The heat conducting component may rapidly transfer the heat of the overheated area of the substrate where the discrete device is mounted to the less hot area of the substrate, and promote the heat generated by the discrete device to spread evenly to the substrate.

Abstract: An overvoltage absorption circuit and a single-phase HERIC topology are provided. The overvoltage absorption circuit is applicable to the single-phase HERIC topology, and includes a clamping capacitor, an absorption resistor, a first diode, and a second diode. One terminal of the clamping capacitor and one terminal of the absorption resistor are each connected to collectors of two cross transistors in the single-phase HERIC topology. The other terminal of the clamping capacitor and the other terminal of the absorption resistor are each connected to the anodes of the first diode and the second diode. The cathode of the first diode is connected to the emitter of one of the two cross transistors. The cathode of the second diode is connected to the emitter of the other of the two cross transistors.

Abstract: The present application relates to the technical field of semiconductor, and in particular to an inverter. The inverter provided by the present application includes a substrate, a discrete device and a heat conducting component. The discrete device and the heat conducting component are both arranged on the substrate. A part of the heat conducting component is located in an area of the substrate where the discrete device is provided, and another part of the heat conducting component is located in an area of the substrate where the discrete device is not provided. The heat conducting component may rapidly transfer the heat of the overheated area of the substrate where the discrete device is mounted to the less hot area of the substrate, and promote the heat generated by the discrete device to spread evenly to the substrate.

Abstract: An overvoltage absorption circuit and a single-phase HERIC topology are provided. The overvoltage absorption circuit is applicable to the single-phase HERIC topology, and includes a clamping capacitor, an absorption resistor, a first diode, and a second diode. One terminal of the clamping capacitor and one terminal of the absorption resistor are each connected to collectors of two cross transistors in the single-phase HERIC topology. The other terminal of the clamping capacitor and the other terminal of the absorption resistor are each connected to the anodes of the first diode and the second diode. The cathode of the first diode is connected to the emitter of one of the two cross transistors. The cathode of the second diode is connected to the emitter of the other of the two cross transistors.

Abstract: A medium-high voltage energy conversion system, and a control method and a controller therefor are provided. In the control method, an operation state of the medium-high voltage energy conversion system is acquired. In a case that the system is in a normal operation state, the system is controlled to operate in a first direct circuit current source mode. In a case that the system is in a first fault state in which a direct current grid voltage drops, the system is controlled to operate in a direct current voltage source mode. In a case that the system is in a second fault state in which a direct current grid voltage is in an overvoltage state, the system is controlled to operate in a second direct circuit current source mode.