UPS string inverters

UPS string inverters
String inverters are now on the international market has become the most popular inverter. String inverters are based on each PV string (1kW-5kW) through an inverter, the DC side with a maximum peak pure sine wave online ups tracking based on a modular concept, in parallel with the AC-side and network
. Many large-scale photovoltaic power plants using string inverters. The advantage is the difference between the modules without strings and impact of shading, while reducing the optimal operating point of PV modules
In the case of the inverter mismatch, thereby increasing the generation capacity. Technically these advantages not only reduces system cost, but also increase the reliability of the system. Meanwhile, in the string between the introduction - the concept of "master-slave", so in the system in a single string of energy can not work a single inverter case, several groups of PV strings together, so that one or several working to produce more Solar panel inverter. The latest concept for several inverters with each other to form a "team" instead of "master - slave" concept, making the reliability of the system one step further.

 

and the computer ups power supply factor is not only the current phase

1) and the computer ups power supply factor is not only the current phase b (fundamental) and the voltage between the relevant and related to the current pulse width, even if the current (fundamental) and the voltage phase  difference between the b = 0, i.e., the current (base when the center line coincides with the wave), and the voltage based on the calculated F (a) still is not 1, and the pulse width becomes narrower as the current increases.
2) Due to the forefront of the current pulse is relatively steep, so the harmonic frequency of the current offer relatively high and rich, space launch capability to offer relatively strong.
If the UPS input circuit is a diode rectifier or a thyristor rectifier, the power factor thereof is not caused by a phase difference, but by strong interference caused by a current pulse. These high-order harmonic currents all the way to form a series mode interference Shao fleeing through electrical equipment, another way out in the form of electromagnetic radiation, the formation of RF interference nearby devices, especially so that the radio communication can not be normal.

Only the power factor and the phase difference between current and voltage related to ρ

B only with the power factor phase current (fundamental) and voltage, but also to the pulse width relating to the current, even if the pure sine wave online ups  current (fundamental) and the voltage phase difference between the b = 0, i.e., the current (fundamental) and the center line coincides with the voltage based on the calculated F (a) still is not 1, and with the current pulse width is narrowed due to decrease relatively Online ups  steep leading edge of the current pulse, so that the harmonic frequency of the current is relatively high offering rich , space launch ups solar power capability to offer relatively strong. 

If the UPS input circuit is a diode rectifier or a thyristor rectifier, the power factor thereof is not caused by a phase difference, but by strong interference caused by a current pulse. These high-order harmonic currents all the way to form a series mode interference Shao fleeing through electrical equipment, another way out in the form of electromagnetic radiation, the formation of RF interference nearby devices, especially so that the radio communication can not be normal.

UPS applications in the telecommunications industry

UPS applications in the telecommunications industry UPS uninterruptible power prices in the emerging industry is rapidly foster the rapid development of the background, the rapid development of big data, smart cities, urbanization, 4G will detonate UPS and other hot new growth markets. Big Data is a sunrise industry, will drive data center  pure sine wave online ups infrastructure and related software explosive growth, data center environments for enterprise deployments also make the appropriate change and innovation, for UPS manufacturers, opportunities and challenges. UPS uninterruptible power prices in the wisdom of many of the city's construction around the digital and information technology to transform the Pure sine wave ups data room for the construction and communication infrastructure to carry out. Both ends of the nerve endings in the smart city (data acquisition, the home communication terminal), or for the nerve / nerve fibers to transmit data, or the neural network (the core of the handling end, an information storage), there are many aspects of UPS manufacturers can the as. Urbanization will promote the application of UPS market in transport, electricity, public services and other industries.

telecom ups as a protective power equipment

UPS as a protective power equipment, computer ups power supply  it is important performance parameters should be considered when purchasing our focus. Mains wide input voltage range, it indicates that the ability to use mains strong (to reduce battery discharge). Output voltage, low frequency range, it indicates that the adjustment ability of the mains, the output is stable. Waveform distortion rate used to measure the stability of the output voltage waveform, and voltage stability is illustrated by zero when the UPS load is applied suddenly full load, emergency power ups output voltage stability.
Telecom ups as a protective power equipment from the basic application in principle, UPS is a storage device containing, as the main component in the inverter, power protection devices output voltage constant frequency. Mainly consists of several parts rectifiers, batteries, inverter and static switch and other components.

Home inverter ups : Application household inverter UPS

Home inverter ups : Application household inverter UPS: Home inverter UPS is to take advantage of centralized string inverters and inverter, home inverter UPS to avoid its shortcomings, offline UP...

The practical application of telecom UPS

Telecom UPS is connected to one of each PV module inverter, telecom UPS and each component has a single maximum peak power tracking, so that the components fit better with the inverter. Telecom UPS typically used photovoltaic power stations, the overall efficiency of less than string inverters. Outdoor cabinet it is in the exchange at the parallel, which increases the complexity of the AC side of the connection, maintenance difficulties. Telecom UPS need to be resolved is how the other more effective and power grid, the simplest way is directly carried by an ordinary AC outlet and network, so that you can reduce installation costs and equipment, but often safety standards around the grid may allowed to do so, Telecom UPS may oppose power plant and the Pure sine wave ups is directly connected to an ordinary socket. Another relevant factor is whether you need to use and safety isolating transformer (high or low frequency), or allow the use of transformerless inverters.