UPS and the difference between
Von mademms, 11:12Industrial frequency UPS and the difference between the high frequency UPS
Author: UPS power source: guangdong burke issued time: 2011-6-9 11:15:30
With the developing of the technology of UPS, many computers, power electronics field, new technology, new concepts to UPS industry. And the IT industry of other products, UPS and similar now former product compared, regardless of in the main performance, appearance, the size of the adaptability of the environment and reliability, have the significant progress, some indicators and even a qualitative leap, for medium and UPS is even more so.An Uninterruptible Power Supply or UPS, UPS Power Supply is one of the most cost-effective ways to provide clean high quality power without any break in supply.
At present more popular large and medium-sized UPS structure is usually two kinds, traditional double transform structure and new structure, both in the IGBT application field formed complementary pattern, the basic structure of traditional UPS (industrial frequency machine) as follows, basic structure: silicon controlled rectifier + battery direct dc bus + IGBT inverter + boost transformer
All new IGBT UPS structure (high frequency machine) as follows, basic structure: not accused of rectifier + DC/DC times pressure link + independent charger + inverter
As can be seen from the graph, industrial frequency machine and the concept of high frequency machine is mainly to the rectification in part, industrial frequency machine is controlled rectifying, traditional technology can be done best 12 pat rectification; And the high frequency machine rectification is diode rectifier is not in possession of the high frequency IGBT + (dc link. As for inverter is of high frequency IGBT inverter SPWM working way (except the thyristor inverter early work mode, has been eliminated UPS). In addition, the output transformer industrial frequency machine is essential, because its rectifier inverter, etc for bp-lowing link, link is therefore in the output side must have the boost as voltage transformer adjustment. And because of the high frequency machine DC/DC boost link, its output side with the boost links (unnecessary pressor transformer). Because of the components development, UPS as the main power UPS IGBT component technology, no matter more mature from capacity, structure, or reliability are is greatly raised, and the UPS digital degree further contributed to a new generation of large and medium-sized UPS structure by original industrial frequency machine is turning to high-frequency machine (as when SCR inverter power transistor is replaced by GTR, and after IGBT inverter to replace the same). UPS electrical structure of the direct effect is the most updated UPS host a decrease in the size of the, the weight of the drop, but more important is the price drops. The specific analysis of two UPS electrical principle and structure of the electrical properties:
Early main circuit structure and the large and medium-sized UPS silicon controlled rectifier the input of alternating current to direct current, the battery direct hanging in the dc bus, when the input utility the normal when, on the adjustment of silicon controlled rectifier battery, at the same time for GTR or IGBT structure of the bridge type inverter power supply, inverter dc to ac inverter, finally after the output transformer and filter the boost, provides pure ac output. From its structure, which can be seen from the rectifier (from the exchange into a dc) to (in from dc into inverter exchange) process, each link is will pressure link: silicon controlled rectifier is to provide constant dc voltage and take a way through rectifier (controlled rectifying the conduction angles adjust to fit the input voltage change, to ensure that the input voltage change of constant dc voltage rectifying output), because silicon controlled rectifier can only cut off part of the input electricity, so its constant output voltage is the price of the output voltage in less than the constant wave rectifier voltage of a numerical. And inverter link was also a step-down link, from controlled rectifying input to dc in through the inverter inverter out the process of the communication of the same is chopped practice, and the result is the same output voltage level down again. It is because of the above reasons, in such a structure of the UPS, must be measured in the output transformer, will join the boost the lower constant inverter output voltage to the output of the reasonable scope, and finally provides constant 220/380 V output.
Author: UPS power source: guangdong burke issued time: 2011-6-9 11:15:30
With the developing of the technology of UPS, many computers, power electronics field, new technology, new concepts to UPS industry. And the IT industry of other products, UPS and similar now former product compared, regardless of in the main performance, appearance, the size of the adaptability of the environment and reliability, have the significant progress, some indicators and even a qualitative leap, for medium and UPS is even more so.An Uninterruptible Power Supply or UPS, UPS Power Supply is one of the most cost-effective ways to provide clean high quality power without any break in supply.
At present more popular large and medium-sized UPS structure is usually two kinds, traditional double transform structure and new structure, both in the IGBT application field formed complementary pattern, the basic structure of traditional UPS (industrial frequency machine) as follows, basic structure: silicon controlled rectifier + battery direct dc bus + IGBT inverter + boost transformer
All new IGBT UPS structure (high frequency machine) as follows, basic structure: not accused of rectifier + DC/DC times pressure link + independent charger + inverter
As can be seen from the graph, industrial frequency machine and the concept of high frequency machine is mainly to the rectification in part, industrial frequency machine is controlled rectifying, traditional technology can be done best 12 pat rectification; And the high frequency machine rectification is diode rectifier is not in possession of the high frequency IGBT + (dc link. As for inverter is of high frequency IGBT inverter SPWM working way (except the thyristor inverter early work mode, has been eliminated UPS). In addition, the output transformer industrial frequency machine is essential, because its rectifier inverter, etc for bp-lowing link, link is therefore in the output side must have the boost as voltage transformer adjustment. And because of the high frequency machine DC/DC boost link, its output side with the boost links (unnecessary pressor transformer). Because of the components development, UPS as the main power UPS IGBT component technology, no matter more mature from capacity, structure, or reliability are is greatly raised, and the UPS digital degree further contributed to a new generation of large and medium-sized UPS structure by original industrial frequency machine is turning to high-frequency machine (as when SCR inverter power transistor is replaced by GTR, and after IGBT inverter to replace the same). UPS electrical structure of the direct effect is the most updated UPS host a decrease in the size of the, the weight of the drop, but more important is the price drops. The specific analysis of two UPS electrical principle and structure of the electrical properties:
Early main circuit structure and the large and medium-sized UPS silicon controlled rectifier the input of alternating current to direct current, the battery direct hanging in the dc bus, when the input utility the normal when, on the adjustment of silicon controlled rectifier battery, at the same time for GTR or IGBT structure of the bridge type inverter power supply, inverter dc to ac inverter, finally after the output transformer and filter the boost, provides pure ac output. From its structure, which can be seen from the rectifier (from the exchange into a dc) to (in from dc into inverter exchange) process, each link is will pressure link: silicon controlled rectifier is to provide constant dc voltage and take a way through rectifier (controlled rectifying the conduction angles adjust to fit the input voltage change, to ensure that the input voltage change of constant dc voltage rectifying output), because silicon controlled rectifier can only cut off part of the input electricity, so its constant output voltage is the price of the output voltage in less than the constant wave rectifier voltage of a numerical. And inverter link was also a step-down link, from controlled rectifying input to dc in through the inverter inverter out the process of the communication of the same is chopped practice, and the result is the same output voltage level down again. It is because of the above reasons, in such a structure of the UPS, must be measured in the output transformer, will join the boost the lower constant inverter output voltage to the output of the reasonable scope, and finally provides constant 220/380 V output.
