The UPS power supply has now widely used a generalized soft switch technology that is different from traditional resonant ZCS, Zus soft switch, to reduce switching loss and improve the switching frequency. This soft switch is a non-destructive buffer circuit that can not only make the switching process softened, but also has a simple circuit, and does not require additional resonant networks, and the cost is characterized.
The input is installed with high-efficiency input filters and active power factors corrector, and uses skewers parallel compensation techniques to reduce input current distortion, reduce the contamination of the UPS power supply to the mains supply to the green power transmission. In order to implement UP miniaturization, reduce the size of the output transformer is the size of the output filter, reduce the electromagnetic *, prevent the saturation of the high-frequency transformer, currently in South Korea is a series resonance inverter, and then the isolation transformer and variable conversion composition high frequency Connected UPS power supply.
Digital control has become the mainstream of the development of new UPS power control technology, which is widely applied to digital processor DSP, which makes control circuitry fully microprocessor. Because the digital controller has high precision, anti-* ability, easy to implement detection, fault diagnosis, and isolation of the UPS power supply, easy to implement remote test, easy to implement parallel and thermal plugging of multiple UPS power supplies, easy to implement the monitoring of the battery And management, that is, the intervention of the computer can make the UPS power to achieve intelligent management, allowing the power to run in the optimized state.
The battery is the heart of the UPS power supply. At present, the UPS power supply generally uses maintenance-free sealed lead-acid batteries, and the United States also uses high-power lead air spare power supply devices (RPUs) to replace the battery. In order to increase the service life of the battery, there is currently a three-stage battery management program, that is, constant flow balance charging, floating charging and natural discharging three stages to prevent overcharge, and over. It has been introduced to the battery management system based on microprocessor monitoring technology, observed the charging and discharge of the battery at any time, and double protection for battery charge and discharge.
Redundant technology and thermal plug technology. Adopt intelligent UPS management system. The so-called intelligent UPS refers to the hardware interface that connects the traditional UPS power supply to the computer, combined with specially designed software to provide dual protection of computer and data data, ensuring that the UPS can detect all faults in the completion of basic functions. , Display and handling, etc., fully realize network monitoring management.
UPS uninterruptible power wiring diagram:
Changchun Hongbao is an export-oriented enterprise specializing in research, development, production, sales and technical services in power field products.
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