Abstract: A heat dissipating system and a power cabinet are provided. The heat dissipating system includes a cabinet, a first circulating fan and a heat exchanger. The cabinet has an outer circulating air duct and a sealed inner circulating air duct. The air inlet and the air outlet connected to the outside are arranged in the outer circulating air duct, and the heat exchanger is arranged in the cabinet and configured to exchange heat between the inner circulating air duct and the outer circulating duct. The first circulating fan is arranged outside the air inlet of the outer circulating air duct or arranged inside the outer circulating air duct, and configured to supply air to the outer circulating air duct. The heat dissipation efficiency of the inner circulating air duct is improved.

Abstract: An IGBT module, a conductor installing structure for the IGBT module and an inverter are provided. The conductor installing structure for the IGBT module includes a substrate, a conductor and an insulation sleeve sleeved on the conductor and insulatedly isolating the conductor from the substrate. In the conductor installing structure for the IGBT module according to the present disclosure, by using the insulation sleeve sleeved on the conductor to insulatedly isolating the conductor from the substrate, the comparative tracking index of the IGBT module is improved, thereby improving the creepage distance of the IGBT module. In addition, compared with conventional technologies of spraying insulation varnish or insulation paste, the insulating property of the insulation sleeve can be better detected and guaranteed, and the bounding between the insulation sleeve and the substrate can be better enhanced, improving the insulation reliability.

Abstract: An inverter system is provided, by which the magnitudes of currents flowing through inverter modules are substantially equal. The inverter system includes multiple inverter modules connected in parallel, where input terminals of all the multiple inverter modules are connected to a same direct current input bus, and output terminals of all the multiple inverter modules are connected to a same alternating current output bus. An input contact S1 of the direct current input bus and an output contact S2 of the alternating current output bus are such located that a difference between impedances of any two branches between S1 and S2 does not exceed a preset value.

Abstract: A heat dissipating system and a power cabinet are provided. The heat dissipating system includes a cabinet, a first circulating fan and a heat exchanger. The cabinet has an outer circulating air duct and a sealed inner circulating air duct. The air inlet and the air outlet connected to the outside are arranged in the outer circulating air duct, and the heat exchanger is arranged in the cabinet and configured to exchange heat between the inner circulating air duct and the outer circulating duct. The first circulating fan is arranged outside the air inlet of the outer circulating air duct or arranged inside the outer circulating air duct, and configured to supply air to the outer circulating air duct. The heat dissipation efficiency of the inner circulating air duct is improved.

Abstract: An inverter system is provided, by which the magnitudes of currents flowing through inverter modules are substantially equal. The inverter system includes multiple inverter modules connected in parallel, where input terminals of all the multiple inverter modules are connected to a same direct current input bus, and output terminals of all the multiple inverter modules are connected to a same alternating current output bus. An input contact S1 of the direct current input bus and an output contact S2 of the alternating current output bus are such located that a difference between impedances of any two branches between S1 and S2 does not exceed a preset value.

Abstract: A power cabinet, a grid-connected photovoltaic system and a container are provided according to the present application. In the power cabinet, three types of devices, namely, a heat dissipation element, a magnetic element, and a high-protection-level element are arranged in three mutually independent cavities, respectively; corresponding heat dissipation devices are further arranged in the three cavities respectively, and each of the heat dissipation devices meets the heat dissipation requirements of the devices in the corresponding cavity. With this arrangement, the three types of devices have their own heat dissipation solutions respectively and do not affect one another. Even if they are operated for a long time in a dusty environment, the magnetic element will not be affected by dust since the heat dissipation requirements of the three devices are satisfied in the three cavities respectively, and the reliability is improved compared with the conventional technology.

Abstract: An IGBT module, a conductor installing structure for the IGBT module and an inverter are provided. The conductor installing structure for the IGBT module includes a substrate, a conductor and an insulation sleeve sleeved on the conductor and insulatedly isolating the conductor from the substrate. In the conductor installing structure for the IGBT module according to the present disclosure, by using the insulation sleeve sleeved on the conductor to insulatedly isolating the conductor from the substrate, the comparative tracking index of the IGBT module is improved, thereby improving the creepage distance of the IGBT module. In addition, compared with conventional technologies of spraying insulation varnish or insulation paste, the insulating property of the insulation sleeve can be better detected and guaranteed, and the bounding between the insulation sleeve and the substrate can be better enhanced, improving the insulation reliability.

Abstract: An outdoor cabinet and a top structure thereof are provided. The top structure of the outdoor cabinet includes a top beam, wherein the top beam is a bending plate; the number of the top beams is at least two, one of two connected top beams is provided with a first locating breach, and the other is provided with a first protruding portion in cooperation with the first locating breach for locating. Compared with that the top beam in the conventional art is a flat plate, the top structure of the outdoor cabinet provided effectively improves the strength of the top beam by designing the top beam to be the bending plate, which improves the strength of the overall top structure, reduces the influence on the hoisting of the outdoor cabinet, and improves the flexibility of the hoisting of the outdoor cabinet.

Abstract: A photovoltaic inverter includes a box, and an inverter cabinet, a direct current cabinet, an alternating current cabinet, a communication cabinet, and a power distribution cabinet which are all arranged in the box. The inverter cabinet is arranged on a first side of the box. The alternating current cabinet, the communication cabinet and the power distribution cabinet are all arranged on a second side of the box. The alternating current cabinet, the communication cabinet, and the power distribution cabinet are all arranged opposite to the inverter cabinet. The direct current cabinet is arranged on a third side of the box, and the direct current cabinet is arranged on a same side of the inverter cabinet and the alternating current cabinet.

Abstract: A power cabinet, a grid-connected photovoltaic system and a container are provided according to the present application. In the power cabinet, three types of devices, namely, a heat dissipation element, a magnetic element, and a high-protection-level element are arranged in three mutually independent cavities, respectively; corresponding heat dissipation devices are further arranged in the three cavities respectively, and each of the heat dissipation devices meets the heat dissipation requirements of the devices in the corresponding cavity. With this arrangement, the three types of devices have their own heat dissipation solutions respectively and do not affect one another. Even if they are operated for a long time in a dusty environment, the magnetic element will not be affected by dust since the heat dissipation requirements of the three devices are satisfied in the three cavities respectively, and the reliability is improved compared with the conventional technology.

Abstract: A photovoltaic inverter includes a box, and an inverter cabinet, a direct current cabinet, an alternating current cabinet, a communication cabinet, and a power distribution cabinet which are all arranged in the box. The inverter cabinet is arranged on a first side of the box. The alternating current cabinet, the communication cabinet and the power distribution cabinet are all arranged on a second side of the box. The alternating current cabinet, the communication cabinet, and the power distribution cabinet are all arranged opposite to the inverter cabinet. The direct current cabinet is arranged on a third side of the box, and the direct current cabinet is arranged on a same side of the inverter cabinet and the alternating current cabinet.

Abstract: An inverter power cabinet includes a cabinet body and power devices arranged in the cabinet body. The cabinet body includes a low-protection grade installation cavity and an airtight high-protection grade installation cavity hermetically isolated from each other; the power devices include high protection grade power devices arranged in the low-protection grade installation cavity and low-protection grade power devices arranged in the high-protection grade installation cavity; the low-protection grade installation cavity has an outer cold air inlet and an inner hot air outlet in communication with outside world, and a first fan is provided in the low-protection grade installation cavity; and the inverter power cabinet includes a heat exchanger configured to dissipate heat of the high-protection grade installation cavity.

Abstract: An outdoor cabinet and a top structure thereof are provided. The top structure of the outdoor cabinet includes a top beam, wherein the top beam is a bending plate; the number of the top beams is at least two, one of two connected top beams is provided with a first locating breach, and the other is provided with a first protruding portion in cooperation with the first locating breach for locating. Compared with that the top beam in the conventional art is a flat plate, the top structure of the outdoor cabinet provided effectively improves the strength of the top beam by designing the top beam to be the bending plate, which improves the strength of the overall top structure, reduces the influence on the hoisting of the outdoor cabinet, and improves the flexibility of the hoisting of the outdoor cabinet.

Abstract: An inverter power cabinet includes a cabinet body and power devices arranged in the cabinet body. The cabinet body includes a low-protection grade installation cavity and an airtight high-protection grade installation cavity hermetically isolated from each other; the power devices include high protection grade power devices arranged in the low-protection grade installation cavity and low-protection grade power devices arranged in the high-protection grade installation cavity; the low-protection grade installation cavity has an outer cold air inlet and an inner hot air outlet in communication with outside world, and a first fan is provided in the low-protection grade installation cavity; and the inverter power cabinet includes a heat exchanger configured to dissipate heat of the high-protection grade installation cavity.