If UPS redundancy above two UPS modules, the availability of UPS up to 99.999%, MTBF (Mean Time Between Failure) up to more than 15 million hours.
Minimum downtime. If the number of faulty UPS modules is less than or equal to the number of redundant UPS modules, the UPS module can be replaced online without affecting the operation of other modules; If the number of faulty UPS modules is greater than the number of redundant UPS modules, due to the use of replacement UPS module maintenance, so downtime will not exceed 5 minutes.
On the problem of hybrid solar inverter efficiency, designers have always been committed to improving the efficiency of the solar inverter. But which areas to start, so as to improve the efficiency of the inverter?
For the inverter with transformer, the main DC filter main circuit (or DC filter circuit), IGBT (or other inverter module), reactor, transformer, AC filter (or homemade filter circuit and wire). So in order to improve the conversion efficiency of the inverter, we can start from these aspects. For example:
1.IGBT, we can reduce the IGBT loss, reduce the switching frequency of the IGBT, but also cannot be reduced without limit, because when reducing the switching frequency, the waveform of the pure sine wave solar inverter will be worsen, the power quality will be reduced, and will increase the noise of the machine, so can only be appropriate to reduce the switching frequency of IGBT.
2.The loss of the transformer. While the transformer losses only the copper loss and iron loss, when we reduce these two loss, inverter conversion efficiency will be improved.
3.The loss of reactor, the reactor to improve the Q value, which is to reduce the inductance of the inductor. So many ways to improve the conversion efficiency of the inverter, I believe that experts in this area will have a lot of more effective methods to improve the efficiency of the products.
Telecom inverter is a kind of device which alternate 220V power frequency current into the voltage regulator output DC voltage, need to go through transformer, rectifier, filter, voltage regulator four links to complete. Each link has its role, the following is a small series of its summary.
1.The rectifier filter circuit: rectifier circuit to AC voltage UI is converted into DC voltage ripple, ripple through the filter circuit to filter components and large DC voltage U1 rectifier and filter circuit, the output ripple is less commonly used full wave rectifier filter, bridge rectifier filter etc.. 2.Power transformer: step-down transformer, 220V AC voltage converter with AC voltage to the power grid, and to the rectifier circuit, transformer secondary voltage of the transformer is determined by the secondary voltage. 3.Voltage regulator circuit: the function of the voltage regulator circuit is to make the output of the DC voltage stability, does not change with the AC power grid voltage and load changes. Commonly used integrated regulator has a fixed three terminal voltage regulator and adjustable three terminal voltage regulator. 4.Filter circuit: the rectifier circuit output voltage of the most of the AC components to be filtered, so as to get a smooth DC voltage, each filter capacitor C meets RL-C=3~5T/2 or T for input AC signal period, and RL is the equivalent load resistance of rectifier filter circuit.
It is a sunshine and beautiful day. SOROTEC held a garden party together for relaxing , and strengthen our team spirit, also to enrich our leisure time on last Saturday, all staffs and some employees with their family together joined this activity, the game include playing the balloon,playing the bowling,playing the dart, clipping marbles and throwing the beanbag.The most exciting game is tug-of-war at the beginning. Our department only have six male,our competitor is the engineering department.We had three rounds of the games,our department won the first round,it seems that we have the great opportunity to win the competition.Against all expectations,our competitor won 2-1 to end the competition.Regardless the results,the game enhanced the cohesion of our department.After this garden party,we get more united,and believe we can create the brilliancy together!
SOROTEC Foreign Trade Department hold a party last night to celebrate our colleagues came back from the business trip,and also welcome the arrival of the new colleague. We spent a happy night together!Team together,tomorrow will be better!
