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info@upspowersupply.netWhat is the Working Principle of UPS?
To ensure normal power supply under any condition is an important basis for the metallurgy industry. Therefore, apart from ensuring normal power supply for the industrial grid, the UPS should be equipped. The UPS is an important equipment to ensure stability and continuity of power supply. Due to a high degree of intelligentization, the energy storage materials can adopt non-maintenance accumulator. As a result, maintenance and repair of the system is usually ignored. Nevertheless, maintenance quality has a huge influence on the electric power’s service life and fault rate. In the following part, we will introduce do’s and don’ts as well as daily maintenance requirements of UPS.
Though the UPS power supply system’s equipment model and system capacity that every enterprise is equipped with are different, their working principle and major function are the same. In terms of UPS power source type selection, every station chooses the online type. This is because the online UPS power system can switch various kinds of power supply at zero time, the length of power supply is optional, and the UPS is characterized by steady voltage, frequency and purification.
Components of the UPS
The UPS is made up of four parts, including rectification, energy storage, commutation and switch control. The voltage stabilization function of the UPS is ensured by the rectifier, and the rectification devices adopt controllable silicon or high-frequency switch rectifier. It can control the output range according to changes of the outer supply. When the external electricity changes (the change should be in line with the system requirements), the output is the rectification voltage whose range generally remains the same. The purification function is realized by the energy storage battery. Since the rectifier’s interference of the instant impulse cannot be eliminated, the voltage after rectification still disturbs the impulse. The energy storage battery can, apart from storing the DC, be likened to be the capacitor of a large container to the rectifier. Its equivalent capacitance is in direct proportion to the capacity of the energy-storage battery. Since the voltage on two ends of the capacitance will not change suddenly, the capacitor will eliminate the impulse interference of the impulse’s smooth characteristics for the purpose of purification. It can also be known as interference of the disturbance. The frequency’s stabilization is realized via the transformer, and the frequency stability is decided by the stability of the oscillation frequency. For the convenience of daily operation and maintenance of the UPS, the system operating switch is designed. The main engine automatically checks the bypass switch after fault.
Working principle of the UPS
AC-DC conversion:
The AC current from the grid turns into the DC voltage via the autotransformer’s voltage reduction, full-wave rectification, and filtering and is provided for the inverter circuit. The AC-DC input has the soft launch circuit, which can well avoid the impact of the startup on the grid.
DC-AC inverter circuit:
Adopt the large-power IDBT module full-bridge inverter circuit with a large power margin. Within the dynamic output scope, the output resistance is very small but quick in response. Since the high-frequency modulation current-limiting technology and the quick short-circuit protection technology is adopted, the inverter can work safely and reliable either under power supply voltage transient change or under the load impact or short circuit.
Control drive:
Control drive is at the core of finishing the whole machine’s functional control. Apart from providing testing, protection, synchronizing, switch and display drive signals, the control drive can finish the control of the SPWM. The dynamic double-voltage feedback is employed to greatly improve the inverter’s dynamic characteristics and stability.
Though the UPS power supply system’s equipment model and system capacity that every enterprise is equipped with are different, their working principle and major function are the same. In terms of UPS power source type selection, every station chooses the online type. This is because the online UPS power system can switch various kinds of power supply at zero time, the length of power supply is optional, and the UPS is characterized by steady voltage, frequency and purification.
Components of the UPS
The UPS is made up of four parts, including rectification, energy storage, commutation and switch control. The voltage stabilization function of the UPS is ensured by the rectifier, and the rectification devices adopt controllable silicon or high-frequency switch rectifier. It can control the output range according to changes of the outer supply. When the external electricity changes (the change should be in line with the system requirements), the output is the rectification voltage whose range generally remains the same. The purification function is realized by the energy storage battery. Since the rectifier’s interference of the instant impulse cannot be eliminated, the voltage after rectification still disturbs the impulse. The energy storage battery can, apart from storing the DC, be likened to be the capacitor of a large container to the rectifier. Its equivalent capacitance is in direct proportion to the capacity of the energy-storage battery. Since the voltage on two ends of the capacitance will not change suddenly, the capacitor will eliminate the impulse interference of the impulse’s smooth characteristics for the purpose of purification. It can also be known as interference of the disturbance. The frequency’s stabilization is realized via the transformer, and the frequency stability is decided by the stability of the oscillation frequency. For the convenience of daily operation and maintenance of the UPS, the system operating switch is designed. The main engine automatically checks the bypass switch after fault.
Working principle of the UPS
AC-DC conversion:
The AC current from the grid turns into the DC voltage via the autotransformer’s voltage reduction, full-wave rectification, and filtering and is provided for the inverter circuit. The AC-DC input has the soft launch circuit, which can well avoid the impact of the startup on the grid.
DC-AC inverter circuit:
Adopt the large-power IDBT module full-bridge inverter circuit with a large power margin. Within the dynamic output scope, the output resistance is very small but quick in response. Since the high-frequency modulation current-limiting technology and the quick short-circuit protection technology is adopted, the inverter can work safely and reliable either under power supply voltage transient change or under the load impact or short circuit.
Control drive:
Control drive is at the core of finishing the whole machine’s functional control. Apart from providing testing, protection, synchronizing, switch and display drive signals, the control drive can finish the control of the SPWM. The dynamic double-voltage feedback is employed to greatly improve the inverter’s dynamic characteristics and stability.
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