The multi-channel segregation with backup battery exports the switching power supply

With the rapid development of the social economy, the demand for electric energy continues to increase. In light of the diminishing availability of non-renewable energy sources, such as fossil fuels, many countries are recognizing the importance of energy conservation and the development of renewable energy. In recent years, advanced technologies, including high-voltage direct current transmission and solar energy generation, have experienced significant growth. The advancement of these technologies has led to the emergence of high-power controlled devices, such as Insulated Gate Bipolar Transistors (IGBTs). These large power devices often exceed standard integrated levels in terms of power handling and cost, necessitating appropriate driving circuits.

Due to the nature of high-power devices, which often operate in bridge configurations, each power device requires independent driving circuit voltage supplied through multi-channel isolated direct current. This multi-channel isolated direct current is typically generated by a switching power supply. The switching power supply is usually powered by the mains electricity, ensuring stable and isolated multi-channel direct current output as long as the mains supply is functioning. However, in the event of a mains failure, the output voltage of the switching power supply will decrease. Because the direct current line connecting to the high-power switching device often has a large electrolytic capacitor in parallel, the voltage drop from the switching power supply can lead to a reduction in the driving circuit voltage, potentially causing the power device to shut off abruptly, which could result in damage.

Therefore, the power supply for the driving circuit is crucial for the overall system's reliability. To ensure the dependable operation of power devices, the driving circuit must maintain continuous operation; in case of mains failure, it should provide power long enough for the power devices to shut down safely. While it is possible to allocate a separate storage battery for each output of the multi-channel isolated switching power supply, this approach necessitates many batteries and chargers, complicating maintenance and potentially compromising reliability.

To address these issues, a continuous multileaving switching power supply with a backup battery is proposed. This switching power supply can continue to provide direct current voltage during mains outages and can signal the control circuit about the mains status. When mains power is available, it supplies multi-channel isolated outputs and auxiliary power to the load. The multi-channel isolated outputs can meet various load power requirements, allowing for the design of a corresponding multi-channel isolated switching power supply, with variations in output voltage levels and quantities. The auxiliary power supply also draws energy from the mains to facilitate charging and control functions.

The proposed circuit design incorporates a multileaving architecture that enables seamless transition between mains power and backup battery operation. This architecture ensures that the switching power supply can efficiently manage the power output to various loads while maintaining operational integrity during power interruptions. The design includes necessary protection mechanisms, such as overvoltage and overcurrent protection, to safeguard both the power devices and the overall system. The integration of monitoring circuits allows for real-time assessment of power supply status, enhancing the reliability and performance of the system in diverse operating conditions.With the high-speed development of social economy, the human demand for electric energy is larger and larger. Under non-renewable, situations in short day by day of energy such as the fossil energy, etc. , the increasingly many country realizes the power saving and develops the importance of the regenerated energy.

So in recent years, new and high t echnology such as high voltage direct current transmission, solar electrical energy generation get the fast development. And high-new technical development these leave controlled device of high-power that the characteristic promote day by day, such as IGBT.

These large power devices are often taller than the large, integrated level in power and costing an arm and a leg, and need suitable his work`s driving circuit. Because big power device these make up, form bridge circuit, work only more often at work, each power device is independent, so its required voltage of driving circuit must be offered by multi-channel isolated direct-current volts, and such multi-channel isolated direct-current volts is exported and generally realized by the switching power supply.

The switching power supply is generally supplied power for it by city power, so long as city power is normal, the switching power supply can work, and can export stable and multi-channelly and isolate the direct-current volts. Once city power breaks down, the output voltage of switching power supply will drop, and because the direct-flow mother who connects the HPSD is connecting the electrolytic capacitor greater in capacity in parallel on the line, the output voltage of the switching power supply must lead to the fact the voltage of the driving circuit drops while dropping, therefore will probably cause the power device to shut off and burn immediately at the moment of should be shut offing.

So, the power supply switching power supply of the driving circuit is essential to overall system. For guarantee power device reliable operation, its driving circuit should be able to uninterrupted duty; Or in case of deenergization of city power, keep supplying power for some time, let power devices all close the deenergization in succession. Because the switching power supply is multi-channel isolated and exported, and there are many kinds of voltage class, if for export, allocate one storage battery all the way while being every, though all right security system run some time in case of deenergization of city power, but there is more quantity of storage batteries, need much chargers, and the node is various, safeguard the inconvenience, make reliability give a great discount.

For it guarantees to be multi-channel to isolate, export the switching power supply, continue, work under the the intersection of city power and the intersection of deenergization and situation, and only use a storage battery, this text designs a kind of incessant multileaving switching power supply with backup battery, this switching power supply can continue offering the direct-current volts in case of deenergization of city power, and can offer the fault signal of city power to the controlling circuit. In cases city power is normal, city power gives at the same time multi-channelly and isolates and exports switching power supply and accessory power supply to supply power.

Multi-channel to isolate the mutual isolated direct-current volts of power supply multibank of the output switch and supply power for load, to different the intersection of load and power reguirements, can design a corresponding one to be multi-channel to isolate, export switching power supply, and such multi-channel main circuit form that isolates and outputs switching power supply is identical, just grade and quantity of the output voltage are different to some extent. Multi-channel to isolate, export switching power supply work, accessory power supply obtain electric energy from city power too, in order to charge / the control

🔗 External reference