Ufgs 26 33 53 static uninterruptible power supply ups covers this type of ups. Ups handbook help to understand the ups and what it does. Then it transitions back to highefficiency lineinteractive mode. Top 10 ups design considerations 23 decentralised or centralised ups. Singleconversion ups systems use the incoming utility ac power to supply the required ac to the output. The diode bridge converter figure 3 is similar to the 6 pulse scr rectifier, except the diodes are natural commutation natural on and natural off. True online double conversion design large blue back light lcd for detailed realtime ups status display dsp technology digital signal processor comprehensive selfprotection design audible alarm mute cold start function auto selftesting system while turning on ups wide input voltage range. Smartonline 120v 750va 600w double conversion ups tower. The dbl mx series ups was designed for use in intersections where the agency has converted to led signal heads.
Single phase online ups using mc9s12e128 freescale semiconductor chapter 1 introduction 1. Double conversion design for superior power protection the dell ups is constantly monitoring power conditionsregulating both voltage and frequency. True double conversion online ups n a true double conversion ups will provide clean, high level quality power to fully protect missioncritical devices such as sensitive networks, small computer center servers, telecom applications, as well. High efficiency online double conversion technology matrix sx33 is applied online double conversion technology with high efficiency 98% at eco mode and 95% at ac mode and 94. This paper focuses on the impact of mains supply on doubleconversion ups efficiency. In the design of double conversion online operation, failure of the input ac does not cause activation of the transfer switch, because the input ac is not the primary source, but is rather the backup source. This ups design is a relatively new technology that was introduced to eliminate the drawbacks of the double conversion online design and is available from 5kva and greater. Like the double conversion online design, the delta conversion online ups always has the inverter supplying the load voltage. Ups dbl mx series ups uninterruptible power system devices play a vital role in daytoday intersection operation. The newest technology in doubleconversion ups units is a rectifier that does not use classic rectifier components thyristors and diodes but uses highfrequency components instead. A variety of design approaches are used to implement ups systems, each with distinct performance characteristics.
Systems with online double conversion topology operate by converting incoming ac power to dc, and back to ac. Dos read this manual carefully before starting installation and operation of the ups. Online ups often called double conversion supply offline ups an offline ups system see figure 1, redirects the electric energy received from the ac input to the load and only switches to providing power from the battery. Double conversion ups units provide protection and complete electrical isolation from all types of power problems.
This calculation deals with the sizing of an ac uninterruptible power supply ups system i. Single and double refer to the number of conversions between ac voltage and dc voltage. Abb ups concepts transformer ups design output transformer 1. This completely eliminates the need to oversize the generator and transformers, without additional filters. Even when presented with the most severe power problems, this ups products output remains within three percent of nominal voltage.
Matrix sx33 is applied online double conversion technology with high efficiency 98% at eco mode and 95% at ac mode and 94. Va online, double conversion ups system for critical server, network and telecommunications equipment. Expandable battery runtime with optional bp24v282u and bp24v703u external battery packs. Another version of the classic, forward converter is the double ended, forward converter, shown in figure 144. Double conversion online ups is the same as the standby ups except that the primary power path is the inverter instead of the ac mains. Our integrated circuits and reference designs for single phase online uninterruptable power supplies ups help you design reliable and robust hardware with very low input and output total harmonic distortion thd and increased efficiency. Delta conversion online ups power quality in electrical. Double conversion topology ups systems are designed.
For this project, a halfbridge doubleconversion topology was selected for its simplicity. Article pcs100 ups single conversion ups for large. An online, or double conversion ups, is the ultimate in ups protection because the utility. As the mains supply mostly affects the rectifier section, the results also. Today, this design is the only major uninterruptible power supply technology protected by patents and is unlikely to be offered from a broad range of ups suppliers. If ac input power falls outside the tolerances of the doubleconversion rectifier, or goes out altogether, the ups uses the battery to keep supported loads up and running. Ups systems below 5000va are available in two basic designs. Double conversion, true online design operates in temperatures of up to 165.
A double conversion ups unit isolates the incoming power to the equipment by converting the incoming ac to dc rectifying and then converts the dc to ac inverts. Figue one shows the basic topology for a single conversion and double conversion ups. An uninterruptible power supply ups can be that answer. Provides power protection from 20kva to 90kva in single cabinet design.
Smartonline 120v 750va 600w double conversion ups, tower, extended run, network card options, usb, db9 serial see all images. However, the additional delta converter also contributes power to the inverter output. Abbs modular ups design ensuring high availability and low total cost of. An online ups works because it actually redevelops the waveform. At the low end, below 750va, double conversion online is rarely considered because other topologies including lineinteractive are more practical for smaller loads. Delta conversion online ups is a modern innovation that eliminates the disadvantages of the traditional double conversion online ups. How to match the ups and the generator nationwide power. This technology isolates output power from input power 100% of the time and has a zero transfer time. Single phase online uninterruptible power supply ups. There are other topologies such as ferroresonant and rotary.
True online double conversion design large blue back light lcd for detailed realtime ups status display microprocessor control guarantees high reliability comprehensive selfprotection design audible alarm mute cold start function auto selftesting system while turning on ups. The double conversion online ups system is the only ups system with a zero transfer time. In this calculation, it is assumed that the ac ups is a double conversion type with a basic system topology as shown in figure 1. It significantly reduces overall total cost of ownership. The dbl mx series ups is a double conversion ups which provide continuous 247 ac power to the cabinet and field signal. Upss are used to protect sensitive electrical equipment such as computers, workstations, servers, and other powersensitive systems. Provides power protection from 15kva to 300kva in single cabinet design. High efficiency online double conversion technology. Modular design three phase online ups with double conversion technology lv 20k60kva 3 3, 200 208 220v hv 20k60kva 30k90kva 3 3, 380 400 415v matrix vx33 is a modular ups system comprised of 1 to 3 power modules of 20kva30kva. It can be seen from the drawing that the transformer is on the output of the inverter and not on the output of the ups.
True online double conversion design large blue back light lcd for detailed realtime ups status display dsp technology digital signal processor comprehensive selfprotection design audible alarm mute cold start function auto selftesting system while turning on ups. Included maintenance bypass switch enables live replacement of ups with zero. Su1500xl description tripp lites smartonline su1500xl online, double conversion ups protects critical server, networking or telecommunications equipment from blackouts, brownouts, voltage fluctuations and surges. The double ended, forward converter las two transistors rather than one, compared to the single. The design topology was implemented using plecs simulation software in order to demonstrate a proof of concept for the ups system. Continue reading the apc white paper, the different types of ups systems which discusses this topic in detail. When the generator comes online, the ups switches to doubleconversion mode until input power stabilizes. All our upss are designed for continuous power protection of critical. Why online ups technology works online or double conversion ups designs can work very well with generators because they accept input power with relatively wide variations in voltage and frequency. The enhancements are based on having a delta inverter and allowing bidirectional power flow. The double conversion online ups converts the power to the battery and back again whereas the delta converter moves components of the power from input to the output. Va online doubleconversion ups system for critical.
Today, this design is the only major uninterruptible power supply technology protected by. Designed to easily connect an additional battery cabinet. Other ups design considerations 8 six considerations to achiving generatorups harmony 9 how to size a ups 10 headto head ups comparison for network closets and server rooms11 ups cost justification worksheet 12 ups form factors input plugs and output receptacles 14 ups startup 18 the difference between va and watts 16 9 ways beer and upss are alike 17 ups vs. True online double conversion design large blue back light lcd for detailed realtime ups status display microprocessor control guarantees high reliability comprehensive selfprotection design audible alarm mute cold start function auto selftesting system while turning on ups wide input voltage range. A doubleconversion ups with an insulatedgate bipolar transistor rectifier and inductor can have a thd i as small as 2%. As the name suggests, these devices convert power twice.
Pdf doubleconversion ups efficiency under varying mains. These terms refer to ups operation with respect to utility power, i. These devices are designed to provide continuous power. In the delta conversion online design, the delta converter acts with dual purposes. Xtra vfi double conversion mode maximizing ups efficiency under all. Due to this, the double conversion online ups system is best for companies using equipment that is very important and sensitive or areas where the power supply is unpredictable. Single conversion ups double conversion ups the 2nd part of the title needing explanation is industrial. Electrical transformers, which the power distribution grid. Conventional ups single phase online double conversion vfi. See white paper 1, the different types of ups systems, for a comparison of these two online topologies link located under resources. With this design, the time that it takes to switch to the inverter, is covered with the ride.
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