Rapidly increasing installed photovoltaic market, gave birth to another batch of PV inverter brand. January 8, in order to discover and to stimulate growth in the Chinese PV inverter brand new century energy network in line with scientific, open, fair and impartial manner, starting the year 2012 China PV inverter ranked "research. Designed to attract widespread attention, more photovoltaic inverter enterprises to lead the development of the industry, and to promote the rapid development platform for the PV inverter enterprise to fully display their strength.

January 23, Century's new energy network "2012 Annual China the PV solar charge controller ranked" research contest began online voting stage deadline on February 28, after more than a month of voting, the tallies. March 1, 2012 annual PV inverter brands list formally announced, TBEA the second inverter power station type, ranked third.

This research is an annual product shipment situation on the Chinese PV inverter enterprises century new energy networks research, while the weights of the history of the corporate brand, social image, firm size, technology research and development, certification, product quality, user feedback, and many other factors, and to solicit the views of buyers, network ballots to come to the popularity of the various brands.

TBEA new energy grid tie power inverter have advantages as well-known brands, products, technology and financial strength, the to produce 1kW-1250kW series grid-connected inverter products through a low voltage ride through Golden Sun, CE, TUV, ENEL other domestic and foreign certification authority, the bulk of the applications in photovoltaic power plants at home and abroad.

Ten years focus on reliable, green, efficient control the inverter technology research and development, application and industrialization of new energy company TBEA has become a mature technology, from design to manufacture various aspects of excellence, cost leadership PV to control inverter system equipment provider.

Topped the list in the forefront in the selection, the the recognized of many photovoltaic owners TBEA brand, is sure TBEA good product quality and performance. TBEA new energy company said that the future will continue to focus on providing reliable, green, efficient power solutions to provide their own power for the development of China's photovoltaic industry.

 In January 2013, the reporter the Swiss inverter SolarMax manufacturers president of Spartak Nick Christophvon Bergen interview. The Swiss company Spartak Nick is the world's leading photovoltaic grid-connected inverter manufacturers.

The company SolarMax brand name, development, production and sales of inverter used for a variety of facilities, the SolarMax inverter series in 2009 to enter the Chinese market. The slump in the global PV market, while the Chinese Government strongly supports subsidies for PV industry, Christophvon Bergen reporters detailed analysis of the pattern of the global PV market.

Christoph: economic factors have a direct impact on the development of the world photovoltaic industry. Europe, for example, as a result of the debt crisis, the government appear in the financial aspects of a lot of problems at this stage will not increase government costs, so the government is trying to reduce investment in the photovoltaic industry. Another example, Italy, Germany, France and some other countries have begun to reduce PV subsidies.

The PV industry at the present stage of development is mainly driven by politics. Europe (due to the euro crisis) gradually cut government subsidies of the photovoltaic industry is not unexpected, the industry as a whole is also ready to face this initiative. Favor further development of the technology and production cost savings, especially when compared with traditional power solar controller generation, this progress also greatly enhance the photovoltaic industry competition.

Christoph: In the United States, the Government is not willing to invest heavily in the photovoltaic market, the duration of the project has been put before the U.S. government is still unknown. Europe in the development of the market within the next two years will slow market businesses will face even greater pressure.

More and more residents choose to install photovoltaic equipment on their own roofs to generate electricity for home use. Countries worldwide, especially those area smaller excess space to install large-scale photovoltaic modules country is a good program.

In Japan, due to the limited area of ​​national geographic, in the home or on the roof to install a set of integrated programs will be able to solve the problem footprint. According to the family's demand for electricity through the roof of photovoltaic devices to generate electricity to meet family needs, the best solution for the use of photovoltaic power generation.

In fact, India, South America, South Africa and other emerging markets also began the application of photovoltaic mppt solar charge controller technology generated a lot of interest. Photovoltaic prices in countries with adequate light in recent years, generally significantly lower now basically the price of conventional power generation. This means that this technology is currently the market is not yet saturated, there is great potential for development.

PV market in China, has been the strong support of the Government. Therefore, in five to ten years, the photovoltaic industry as a whole will be in a higher position.

 In the field of photovoltaic EPC contractors is not unusual. The usually iron barracks of the soldiers, to finish a project left. Can really gain a firm foothold, to win the full trust of the owners, a project of an enterprise to do so in a very few.

In the Haiyang Energy Group is one of them. After 30 days in 2011, that is, high-quality two 30 MW PV power plant construction tasks completed in the energy-saving East station, recently in Haiyang once again successfully won the bid in energy saving Dongtai three 9.8 megawatt photovoltaic grid-connected power plant EPC project. In Haiyang Energy Group Chairman Xue Liming think, successfully won the bid, again mainly in Haiyang manifested in the second stage of the process of building the service period which shall be responsible and faster and better quality control of the ability to win the full trust of the owners.

30 days 30 MW PV construction miracle in Haiyang Jiangsudongtai first hit. Energy saving the Dongtai two 30 MW PV grid tie inverter power plant construction started in November 2011, and in December of that year to complete the project acceptance and success of the grid, Haiyang in just 30 days to complete the construction of six months duration of the need to complete the project task, and the quality of the project is highly recognized by the industry.

So the magic speed of building owners in the energy-saving aspects amazed. In March 2012, in a visit to the activities in the energy-saving solar Zhenjiang, general manager Jiang Likai was pointing Dongtai two projects himself a guest instructors: "You see here two 30 MW installed power generation only used for a month ! local government praised the 'fly in energy-saving speed'.

Surrender first excellent answer, there are people in the industry is predicted to form a closer cooperative relationship in Haiyang will be in energy saving, and later in EPC projects will have more gains. Sure enough, three projects in Hai Duong won the bid.

Bekaert said in its 2012 annual report, which has a cost of 117 million euros ($ 153 million) for the restructuring of its solar panel wafer wire saw business. A year ago, due to severe overcapacity, industrial materials company Bekaert announced massive layoffs, a decrease of 1,250 jobs in its solar silicon wire saw operations.

It is reported that the general light pollution grounds sense of vertigo the mirror building reflective caused pedestrians and drivers, as well as night unreasonable lights cause discomfort. Noise light pollution will also damage the eyes, if the people is a long time in the IPL light irradiation, psychological accumulated effect will be different degrees cause dizziness, neurasthenia and other diseases.

Although harm is obvious, and is increasing and spreading, but is not currently included in the scope of the prevention and control of environmental light pollution.

Although there are analysis, distributed photovoltaic power generation facilities installed in the top of the City Tower building, will produce a certain amount of light pollution, but does not completely overlap with the space of human activities, "so the impact is not large.

 Following the take Bargain excess inventory crazy action, global photovoltaic (PV) polysilicon spot market finally calmed many many other signs confirmed the IHSprediction forecast: With the improvement in the relationship between supply and demand, the price of polysilicon will soon hit bottom . 

The sharp decline of 47%, according to IHS solar polysilicon solar panel price index, the spot market accounts for only 20% of the overall polysilicon sales in December 2012 than in May reached peak levels. In mid-2012 when the stock market higher sales, indicating that the polysilicon in a serious oversupply of state. Manufacturer excess inventory sold in the spot market, to suppress the price to a lower level, to attract buyers to abandon long-term contracts to spot market. 

This phenomenon is associated with polysilicon prices continued to fall. The end of 2012, polysilicon prices dropped to an average of $ 20.00 from $ 31.00 per kilogram in February. Polysilicon is a key material for the production of solar panels.
However, the stock market trading volume decreased by more than half, indicating that suppliers have to reduce production to meet the demand, which means prices are close to the bottom. 

As IHS forecast in November, in early 2013, the the the solar polysilicon inverter with charger prices up to 23-month decline is approaching the end. The decline in spot market trading volume, as well as a range of other signal display, to suppress the price of polysilicon suppliers profit decline near the end of 2012. 

The respective shares of the global polysilicon percentage of trading volume in the spot market and contract market in 2012 
The first-tier suppliers reduce production to the forefront, and listen to the advice given by the IHS in September 2012. These manufacturers hope that by controlling the quantity and does not cause intensified spot market supply, to avoid repeating the mistakes of 2012. 

These major suppliers have encountered the problem of declining margins. Even the most competitive suppliers are now warning investors that they can not continue to reduce prices in order to expand market share. Factory capacity utilization declined, the leader in unit product cost increases, which will lead to the first-tier suppliers to stop price cuts. 
In short, it is expected that polysilicon prices this month began to rise, and the rally will continue until March. 

2013 demand is expected to only a moderate increase, while supply will make adjustments as the decline in sales. Even if demand growing faster than expected, the first-tier suppliers to increase production will remain cautious, well aware of the excess supply of momentum will immediately ruin the fragile recovery in prices. In a few months, the impact of second-line and third-line supplier may be weakened. 

 Today's solar inverter layout needs based on the current sensor compact, low-cost and reliable ground current detection scheme. The LEM accordingly specially designed CT series sensor. They are rated range of 100mA, 200mA and 400mA current device rated current to provide a linear output of 5 volts. Under the conditions of the 80% and 90% of the rated current, the response time of less than 20 milliseconds and 60 milliseconds. 

Use of high-tech design (fluxgate) is crucial to the accurate measurement of small DC or AC current especially low offset drift conditions; measurable DC and AC current up to 18 kHz. CT products can be mounted on the PCB, small size, light weight, with the phase conductor through the through hole. Mounted on the PCB CAS / CASR / CKSR current sensor using the same closed-loop fluxgate technology; isolated measurement of AC and DC current, they cover the range of 6 to 50Arms rated highest measured three times the rated value, frequency up to 300 kHz (+ /-3dB). 

Specially designed in accordance with the requirements of the latest the mppt charge controller design trends, they improved the performance of the following aspects: common mode interference, temperature drift (offset and gain; depending on the model, the the largest zero temperature drift of 7 to 30 ppm / K), the response time (less than 0.3 microseconds), the insulation level, the +5 volt supply and compact size. 
In order to synchronize with the grid, require special control of the output terminal of the inverter. Must inverter output sinusoidal AC, to minimize harmonic respond quickly to the current changes to the network side. The sensors used here must have a fast reaction time and low 0:00 drift. 

Reduce the temperature changes caused by zero drift also help to reduce the need for complex compensation algorithms. In contrast, in the through sensors monitoring the DC input terminal of the wind charge controller of the MPPT, variations of the current corresponding to less, which can be used low-cost open-loop sensors. No access to the power grid inverter, such as a rechargeable battery backup system, free from the national grid, but must meet the same safety and efficiency requirements. 

PV inverter design must comply with the specifications are likely to become more stringent. Example, and limitations of DC input power grid may reach some kind of consensus on the total allowable level of the output current of the inverter harmonics; according to the layout of the existing features a variety of local restrictions. This requires to accurately measure current in the grid frequency is much higher than 50 or 60 hertz. 

Close collaboration between Lyme and other sensor manufacturers and PV inverter manufacturers, technology development will lay the foundation. The integrated use of these technologies to achieve real competitive advantage and market share in the growing solar energy industry.