Solar inverter market price is expected to lower heating - heat pumps, solar, inverter - heat pump industry

Solar inverter market price is expected to lower heating - heat pumps

, solar, inverter - heat pump industry

The continuous development of human society, along with more Energy Consumption, and thus find New Energy Become an urgent task. It is necessary to maintain the development of industrial economy, but also reduce the "carbon" emissions, an important way to increase the utilization Solar Energy And other new energy sources. In response, countries around the world have increasing input solar power as an alternative to Oil , Coal and other traditional energy sources.

Among the many renewable energy, solar energy received by the concern, the global wave of solar power is off. Developed countries, the United States plans to make the 2025 renewable energy accounted for 25% of the total electricity supply; to 2020, Japan's solar power generation capacity will reach about 20 times in 2005; to 2030, will 40 times. Developing countries have a high degree of solar energy concerns, the Chinese renewable energy by 2020 will account for 12.5% of the total electricity supply; in India by 2012 the share of renewable energy will reach 12%.

Inverter required support to improve efficiency

The rise of emerging markets, often means the birth of new opportunities. As a new solar energy, battery manufacturing, Power supply Conversion and other related enterprises to provide a new stage play. Commenting on the new energy future prospects, International Rectifier (IR), vice president of strategic market development AlbertoGuerra said: "For home and business Environment For future power Energy Strategy is to use the smart grid and smart Home Appliances , And further the use of solar (and wind) technology to generate electricity. "

As photovoltaic power generation system for the DC current generated, but the civil power to the main AC power, and solar power will eventually run into the grid, which means that solar power inverter must be converted to AC DC to drive home appliances and other loads. Therefore, solar power inverter plays an important role in the system.

Inverter main function is to supply the variable DC voltage input into the exchange without interfering sine wave output, both for devices can also be fed back to the grid. In addition to achieving AC-DC conversion, the inverter can also perform other functions, such as the circuit is disconnected, to prevent circuit damage due to current surges, also can charge the battery, on the use and performance of data storage, and maximum power point tracking (MPPT), to maximize the efficiency of power generation.

"Raise the energy efficiency of high-power solar systems, inverter is an important part, it is to ensure that solar energy conversion efficiency and return on investment the key factor." Infineon Technologies (China) Co., Ltd. home appliances and industrial power devices Marketing Manager Chen Ziying stressed the main points to improve solar power system is the inverter.

Although in recent years, manufacturers of solar cells has been committed to improving the photoelectric conversion efficiency of solar cells, but in February 2010 on the highest solar conversion efficiency of view, 15cm 15cm 200 m thick solar cells can only achieve 19.3 % conversion efficiency. As the photoelectric conversion efficiency of solar panels is relatively low (average about 15%), so get as much as possible from the solar panel output power inverter responsibility fell on him.

"Core U.S. market, National Semiconductor Asia Pacific Business Development Director Zhangyao Jiang pointed out that the solar system's biggest challenge is to optimize inverter performance."

Inverter power devices compete with the decision

The solar inverter performance improvement is even more dependent on the power switching devices, like access to high AC output voltage and current, power devices require correct choice. Chen Ziying said that China currently is the major development of solar power generation system, Golden Sun Model Project Interim Measures for Administration provides financial assistance funds, a single project installed capacity of not less than 300kWp.

"With the increase of single-power, solar inverter technology and devices subject to restrictions on the form of relatively simple circuit, mainly three phase inverter bridge, the important task of improving energy efficiency fell on power devices, the device their performance and design to use is the key. "

In small solar power inverter, many companies have their own proprietary circuit structure, a new generation of power devices so that these circuits even more powerful, efficiency, reliability, performance and other areas has greatly increased.

Infineon has developed a series of solar application products, such as high-power three-level module Easy and Econo4 portfolio, 50A ~ 300A650V; high-speed IGBT and SiC diode PrimePACK module specification 600A1200V. These power devices will help to promote more than 100KW solar inverter efficiency to a higher level. In addition, Infineon's structure grooved-gate field termination technology FieldStopIGBT, CoolMOS, silicon carbide SiC diode in energy efficient solar inverters have outstanding performance.

IR is also a pioneer in solar technology. AlbertoGuerra, as early as the early 60s, IR production of solar cells will be used for the first satellite on top of cars and even solar energy to drive the first electric car. Today, IR for the solar industry to provide a wide range of power management products, especially household, commercial and utility applications business-level string inverter. IRMOSFET and IGBT technologies to play advanced performance, can be used for different solar inverter topology, such as single-phase and three-phase design, the help system to reduce power dissipation. IR's IGBT products to take care of all of these performance requirements of Park Extension, covering power 5KW to 30KW and above, the voltage range of 600V to 1200V.

"Infineon Technologies (China) Co., Ltd. home appliances and industrial power device market manager for Chen Ziying, said inverter is solar energy conversion efficiency to ensure the key factors and return on investment." Inverter design features: reliability and efficiency simultaneously

For engineers familiar with power management, solar power inverter system requires additional attention to what point? First, existing PV systems use inverter point of view, they generally use only 5 to 10 years, while the service life of PV panels for 25 years, a photovoltaic inverter system reliability the lowest component. IR's AlbertoGuerra proposed PV system designer must consider the life of the inverter. "Solar inverter technology industry for the life of the product have high expectations in general can guarantee 20 to 25 years of use, so special emphasis on the reliability of each component." Although the semiconductor device is usually achieved this level of reliability But there may be passive components is a challenge, especially capacitor

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