The UPS of complete digitlization

Of power MOSFET and IGBT come out to be developed for UPS give an effulgent way, make UPS technology enters brand-new times —— to digitlize a times completely.

Above all, the input of UPS cancelled to be used at the labour frequency that keeps apart with town report partly transformer or use for step-down from Ou transformer, and use SPWM technology to realize rectification high frequency change (AC/DC) . Reduce size of dc side filter on one hand, improvement grades side adjustment performance continuously, raise town report voltage to allow span; Use control of DSP of digital signal processor in controlling a technology on the other hand, make sine of input electric current is changed, as identical as town report voltage, realize factor of UPS tall power input thereby (PF is about 1) , the harmonic “ that eliminates pair of town report pollutes ” , decrease substantially without work loss, reduced moving cost apparently, achieve the goal of environmental protection.

Next, cancelled the labour frequency transformer in UPS inverter, will realize the segregation of UPS and town report with high frequency transformer, and the output level of UPS uses SPWM commutation means (need not transformer is direct inversion) voltage of output labour frequency. The power MOSFET in inverter or IGBT job frequency are in 20kHz above, output filter is accordingly small and simple, and the sine wave of output is very smooth.

In-house to UPS accumulator group takes kind of step-down of high frequency change (DC/DC) charge, when town report power cut, UPS changeover is accumulator, to inverter power supply Shi Yicai takes kind of step-down of high frequency commutation (DC/DC) implementation.

Sine wave is used in inverter control circuit direct feedback technology, make its adjust high speed is changed, far technology of feedback of imitate of excel tradition mode, plus the small SPWM modulation that outputs filter and 20kHz above, make UPS trends corresponding character is first-rate. Function is used to pass admirably in inverter protection circuit shed protective technology, make inverter has stronger overload capacity not only, allow 100 ％ load lopsided (point to three-phase inverter) , and have strong oneself protection. Also assure to fall in afore-mentioned conditions just about, abandoned traditional pattern inverter outputs transformer, not only noise low and efficiency is tall. Complete digitlization UPS is new generation UPS, it is had high quality, high reliable, high index, muti_function wait for a characteristic. Land please: ? of pole of uncut jade of Mian Lai white browses more information

At the beginning of 21 centuries, global UPS technology will develop towards muti_function direction. Make its complete the power limits of series product extends 300kVA from 12kVA, satisfy the client's requirement in the round, the central power source that provides the place of key application system that includes special environment to fall to need protects a function, inside buy type DCexpert batteries is censorial system, can high accurate ground offers run time and batteries condition, because the breakdown of arise suddenly brings about data to lose,avoid, the error of batteries run time that its indicate is ±3 ％ only.
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