Cloud computing opportunities for UPS

If the development of the Internet has changed the world, now the emergence of cloud technology has greatly increased the ability to change the world. UPS, as an important part of the data center infrastructure, is also introducing the concept of cloud into the UPS power system. With the continuous deepening of cloud computing applications, the future of China's data center market will usher in a new leap-forward development period. Next-generation data centers will be built into dynamic, intelligent, green and scalable cloud computing platforms. To achieve these goals, UPS, which guarantees the uninterrupted operation of infrastructure, also faces challenges.

Cloud computing opportunities for UPS

In the past decade, with the great development of the telecommunications industry and the rapid advancement of information technology, high-power UPS has been widely used. As the “guardian god” in the indispensable communication field, the high-power UPS can not only prevent the user from harm caused by instantaneous blackouts and accidental power outages, guarantee the continuity of business of communication operators, but also effectively eliminate the clutter of the power grid and maintain the grid voltage. And the stability of the frequency, so as to provide high-quality power supply for the constantly updated communication equipment and network equipment system.

Because cloud computing services such as application outsourcing, information hosting, and duplication of data storage and updating for the purpose of providing virtual redundancy will all significantly increase Internet traffic and the amount of data processed by cloud computing servers, these additional traffic will need UPS protection. Therefore, cloud computing technology will not only replace the UPS power supply, but will also promote the overall market demand for UPS power. The overall demand is also developing in the direction of standardization, high reliability application, and green energy conservation.

The first requirement brought by cloud computing is standardization. As the world's leading provider of critical power and cooling services, most UPS products today are standardized, whether they are UPS or power distribution modules, and can be controlled through hot aisle containment systems and InRow. Kind of cooling, so that refrigeration becomes standardized and modular. Next, how to effectively manage the modular organization, the data center management software platform can completely monitor the building, power distribution, power supply, cooling, and actual operation of the data center, and finally it is put together in an interface that will make you clear at a glance. . When adding devices and reducing devices, it will remind you of all applications that can affect the connection.

There are countless new technologies for UPS power delivery based on the concept of cloud computing. Cloud computing is the allocation of resources on demand, and UPS also hopes to establish an energy efficiency optimization model for data center power supply with on-demand distribution. When the equipment is not in a low load state, some modules will automatically enter the dormant state. With the increase in the amount of calculation, the module will automatically start up and put into normal working order, fully implementing the on-demand operation, thus increasing the The safety of power supply, while reducing the energy consumption and IDCPUE value.

Digital Control Becomes a New Trend in UPS Control Technology Development

The generalized soft-switching technology that is different from the traditional resonant ZUS and ZCS soft-switching has been widely used to reduce the switching loss and increase the switching frequency. This kind of soft switch is a kind of lossless snubber circuit. It can not only soften the switching process, but also has the characteristics of simple circuit, no additional resonant network, and low cost. The input end is equipped with an efficient input filter and an active power factor corrector, and a series-parallel compensation technique is adopted to reduce the input current distortion, reduce the pollution of the UPS power supply to the mains power supply, and make it develop to the green power conversion type. In order to realize the miniaturization of UPS power supply, reduce the size of output transformer and output filter, reduce electromagnetic interference and prevent saturation of high-frequency transformers. At present, series resonant inverters are used in Korea, and are then composed of isolation transformers and frequency converters. High frequency connected UPS.

Digital control has become the mainstream of the development of new UPS control technology. That is, the digital processor DSP is widely used to make the control circuit fully microprocessor-based. Because the digital controller has high precision and strong anti-interference ability, it is easy to implement detection, fault diagnosis and isolation of UPS, easy to implement remote telemetry, easy to implement parallel connection and hot-swapping of multiple UPS, and easy to implement monitoring and management of the battery. In other words, the computer's intervention can enable the UPS to achieve intelligent management, which allows the power supply to operate in an optimized state.

The battery is the heart of UPS. At present, UPS generally uses maintenance-free sealed lead-acid batteries. The United States also uses high-power lead-air backup power supply units (RPUs) to replace batteries. In order to increase the service life of the battery, a three-stage battery management scheme is currently used, ie, constant current equalization charging, float charging and natural discharging, to prevent overcharging and overdischarging. Nowadays, a battery management system based on microprocessor monitoring technology has been introduced to observe the charge and discharge status of the battery at any time and to perform double protection for battery charge and discharge.

Uses redundant technology and hot-plugging technology. Adopt intelligent UPS management system. The so-called intelligent UPS refers to the hardware interface that connects the traditional UPS with the computer, combined with the specially designed software to provide double protection for the computer and data materials, so as to ensure that the UPS can detect all faults in addition to basic functions. Display and processing, etc., fully realize networked monitoring and management.

In-depth UPS intelligent application

The hardware part of an intelligent UPS basically consists of an ordinary UPS plus a computer system. Through the analysis and synthesis of various types of information, the microcomputer system shall complete the following functions in addition to the normal control functions of the corresponding parts of the UPS:

Completely digital: The latest digital signal processor DSP is used to achieve 100% digital operation of the UPS system. In this series of UPS, AEGSVS also uses a triple microprocessor redundant system, which uses three microprocessors with independent power supply to control the rectifier, inverter and static electronic bypass, thus higher system's Digitization and reliability.