Beijing Miriam Green high effective 500kW inverter ranks among the world advanced level

Beijing Miriam Green high effective 500kW inverter ranks among the world advanced level




Recently, Beijing Beijing Miriam Green Energy Power Systems Co., Ltd. has independently developed JYNB-500KHE power efficient 500kW inverter successfully passed the national "Golden Sun" certification. Green to Vice President Ma Jing-yee Leung said that after testing, the product of the highest conversion efficiency of 98.8%, ranking first in China photovoltaic solar energy industry, and 98.6% higher than the conversion of the European level.

According to Ma Liang introduction, this power inverter modular design concept, with the power density is high and competitive advantages such as compact structure, and also passed environmental testing, EMC testing and performance testing.

As we all know, solar energy conversion efficiency is not high, the photoelectric conversion efficiency of solar panels on average only about 15%, and the solar cells must generate the DC into AC power inverter can be for civilian use, and production. To some extent, the energy conversion efficiency inverter PV system determines the energy conversion efficiency and return on investment. For example, a 100kW solar power system, the energy conversion efficiency increased by 0.1% each, would save nearly 1 square meters of solar panels.

Reporter from June 18 to be held in Beijing Miriam Green Power Project Chuxiong signing ceremony was informed that the company has successfully won the bid Yu-Kun new energy company located in Chuxiong of 4MW PV power plant EPC turnkey services, JYNB-500KHE inverse power Transformer will also be applied to the power station project.

Green energy is here in Beijing Instrument Group, the Beijing Energy Investment (Group) Co., Ltd, Baoding Yingli Energy (China) Co., Ltd., a joint venture high-tech new energy company, with equipment from the photovoltaic materials to the photovoltaic applications, one-stop chain . Beijing Instrument Group PV industry in China has long been hard to date already has eight years experience in grid operation, has assumed the radio zone 17 Tibetan independent photovoltaic power station project, and the Drum Tower in Beijing, China West Street, built the first light V roof grid power projects.

According to China's long-term energy development plan, by 2020, China's renewable energy to account for 20% of total energy consumption, currently represent less than 5%. It is foreseeable that the future prospects of China's PV market is very broad. Instrument according to Beijing's future green energy development plan, "12 5" period, the company will strive to build a relatively complete photovoltaic industry chain, and create advanced photovoltaic power generation equipment manufacturing and systems integration base.

Shenzhen Maorun Electric Co. LTD.，as a professional power inverter manufacturer and resolving to promote BESTEK as a top brand of power inverter files, we have the backing of the strongest R&D team, the highest passion to serve and provide the strictest quality control. Our products range including DC to AC power inverters/30W~1000W/modified sine wave, car power inverter, laptop adapter, universal travel adapter, step-down converter, portable charger and more related products. All OEM/ODM orders are accepted, and we are always on standby waiting for your request and inquiries. contact sale38@bestekltd.com.

The Product Certification of Grid-connected Photovoltaic Power Inverter Promotes the Development of Optical Grid-connected

The Product Certification of Grid-connected Photovoltaic Power Inverter Promotes the Development of Optical Grid-connected

Time :2009-11-6 10:09:18 Author: Sobey Solar Source: Solarbe.com

"Authentication technology standard management approach" resolves trade problems
In August 2009 by the Beijing-led Jianheng Certification Center, Hefei Sunlight Solar Energy Power Co., Ltd., Beijing Corona, China Electric Power Research Institute and other units are involved, according to the national commission "authentication technology standard management approach" and "authentication technology standardized management approach to the implementation details "requirements, co-drafted a certified technical specifications CGC/GF001: 2009" 400V following grid-connected photovoltaic inverter specific technical requirements and test methods ", and successfully at the national Certification and Accreditation Administration of the record, the record number To: CNCA/CTS0004-2009. In the grid-connected photovoltaic inverter national standard, industry-standard missing cases, the release of the certification specifications for China to implement grid-connected photovoltaic inverter to provide the healthy development of a scientific and rational technical basis.
The main technical specifications of the certification requirements include: performance and safety of two parts. Performance of some of China's power grid in accordance with the requirements of the development, including: power quality and protection. Among them, power quality testing project inverter efficiency, and net current harmonics, power factor, operating voltage, operating frequency, dc component, noise; the protection of functional testing project power fault protection, anti-anti-discharge protection, anti-polarity access protection, overload protection, anti-island test. Some refer to the relevant safety standards at home and abroad, including: electromagnetic compatibility and insulation withstand voltage, in which electromagnetic compatibility including: voltage fluctuation and flicker, launch requirements, immunity; insulation withstand voltage requirements in accordance with China's power sector development, including: insulation resistance and dielectric strength. Overall, the technical specification is in line with China's national conditions, with international advanced level of technical standards.

The product certification of grid-connected photovoltaic inverter is recognized by China's PV Industry
Currently, grid-connected photovoltaic inverter certification and implementation rules have been finalized and testing agencies have tested with the corresponding ability to work has become fully certified. Hefei sun 250KW, 100KW grid-connected inverter has passed the test, Beijing on good power supply, Beijing Corona and 5KW to 20KW, and grid-connected inverter is also about to complete the test. Germany, Austria, Spain and other enterprises are also ready to submit applications for accreditation.

High-power Inverter Cabinet of Electric Locomotive Rolls Off the Production Line in Zhuzhou

High-power Inverter Cabinet of Electric Locomotive Rolls Off the Production Line in Zhuzhou
http://www.rednet.cn/         2009-11-4 9:38:48            Red Net


Red Net News, November 3 (Journalist Zhou Huaili& Li Wenfeng, Reporter Jiang Liuqing& Sun Yanfei) Recently, Lince Group Co., Ltd. In Zhuzhou, Hunan held the rollout ceremony of world's largest powerACTransmission six-axis 9600 kilowatts electric locomotive inverter in its workshop, which exported steel structure products. It also marked the successful localization of this kind of inverter.
　　
It is said that this type of inverter cabinet is one of the important parts of the world's largest six-axis power of 9600 kilowatts of AC drive electric locomotives, which is mainly produced for Nanche Zhuzhou Electric Locomotive Co., Ltd., which produces such locomotives designed by German Siemens, undertaken by Zhuzhou Siemens Traction Equipment Ltd., and prodeced by Zhuzhou Lince Group Co., Ltd. Before the first piece before the product off the assembly line, "Zhuzhou Lian-cheng" trial of the two products by Siemens Traction Equipment Ltd., Zhuzhou, examined by an expert, that the company produced the inverter enclosure fully meet the design requirements.
　　
The inverter enclosure smooth off the assembly line, marking the "Zhuzhou Lian-cheng" large screen cabinet manufacturing process level has been a major upgrade to the company to create new economic growth point. At present, the company signed the first inverter enclosure 180 has entered mass production stage.

[Draft Source: Hunan Daily]

[Author: Zhou Huaili& Li Wenfeng]

[Editor: Wang Pingping]

The German Market Shows A Strong Momentum of Development: Phoenix Inverter and Its Components Are In Short Supply

The German Market Shows A Strong Momentum of Development: Phoenix Inverter and Its Components Are In Short Supply

Time :2009-11-16 14:32:45                    Author: Sobey Solar                    Source: PV-tech

Germany's overheated housing market, allowing system integrators Phoenix Solar's business has also been warmer. As of the end, Phoenix's solar inverters and solar power components may occur shortage.
The company released third-quarter earnings in 2009, when pointed out that the first half of the component prices continue to decline in Germany. While prices stabilized in the third quarter, Phoenix solar orders in large numbers. With higher returns, as well as falling prices, the German market will continue to flourish.
Phoenix Solar Company expects this year is the year of Germany's most dramatic history, although the initial momentum of development is slow, but this year the amount of solar energy installation will be much higher than in 2008. The company expects to install additional capacity in Germany this year will reach 2.5GW, and in 2008 an increase of 60%.
Phoenix Solar also said that in November the amount will be the installation of 400MW, while the history of the highest installed capacity of 300MW. Public utilities, it was once under the solar energy projects so that the German market malaise. Financial assistance is not enough restrictions on the development of the project. More importantly, the process of obtaining funding in accordance with strict standards, bank loans are no longer applicable, which leads to delays in many projects. This situation also affected the Phoenix solar energy, there are a lot of orders have been delayed.
The company pointed out that the Spanish market, funding problems have emerged in the region, only to install 130MW.
However, the Spanish market may delay improvement projects, which could alleviate the need for built in 2010 needed projects.
Components of the Italian market during the first half of this year prices fell, with the attendant reduction in installation volume. Steady increase in the price and supply, making the demand has to pick up, installation of this year, the amount could reach 250MW.
The French market is gradually improving, but faces a long-term need for the approval process, the installation of the amount of all prejudice. Even so, the French market is expected to reach 150 MW this year.
(Translated by Solarbe.com)

The Standard of Grid-connected Photovoltaic Power Inverter Is Missing

The Standard of Grid-connected Photovoltaic Power Inverter Is Missing

2009-11-6 14:12:58 Source: International New Energy Network 　Netcitizens’ Reviews

Grid-connected photovoltaic power generation and grid-connected photovoltaic inverter is one of the important parts of a power generation system, its main role is to DC into AC power supply can be used as a load converter, which is the inverse transform function of the rectifier devices. As the issue of grid-connected photovoltaic systems is that DC, if you want to share the load power, we need to equipped with inverter. Inverter through the semiconductor power switch turn-on and turn-off effect can be transformed into alternating current to direct current, is the inverse transformation process of rectification.

In view of grid-connected photovoltaic power inverter the importance of its quality will directly affect the safety of the local power grid, as well as the user's personal and property safety, for which the State "Golden Sun Demonstration Project" where the request and grid system uses the key to parts to go through domestic product certification. However, China's photovoltaic standard system is not perfect, there has been no published national grid inverter on national standards and industry standards, product certification, lack of technical basis, this is my country and grid-connected inverter product quality evaluation and enhancement of skills , and even China and the development of grid-connected photovoltaic power generation market had an adverse impact.

Three Ministries Speed up the Progress of Implementation of "Golden Sun" Project

Three Ministries Speed up the Progress of Implementation of "Golden Sun" Project


2009/11/17/09: 08 Source: Securities Star


Recently, the Ministry of Finance, Ministry of Science, the National Energy Agency jointly released the "good" Golden Sun "demonstration project implementation of the notice" to speed up the implementation of the "Golden Sun" demonstration project. This indicates that the photovoltaic industry, the attitude of the government care to promote the development of PV market determination.

According to estimates, to 70 U.S. dollars / kg of polysilicon unit price calculation, the total component cost of 1.54 U.S. dollars / Wp, equivalent to 10.47 yuan / Wp, with price-cap 14 yuan / Wp basis, gross margins reach 25.2%, for components manufacturers, 14 yuan / Wp unit price is acceptable.

Sunlight Supply PV inverter obtained the U.S. ETL Certification

Sunlight Supply PV inverter obtained the U.S. ETL Certification

Time :2009-11-16 9:47:22 Author: Sobey Solar Source: shine light magazine

The sun power to obtain ETL certification of its products at the same time fully consistent with the United States and Canada relating to the strict standards of inspection and testing, free circulation in the North American market. Recently, Hefei Sunlight Power Supply Co., a large-scale production of photovoltaic grid-connected inverter successfully passed the United States, ETL certification, this is the first of China's PV inverter industry, through the certification business.

ETL certification is based on product certification issued by North American standards, but also at the same time issued in accordance with Canadian National Standard Test composite certification mark. This is also the same time, the sun Power Sun Access series of photovoltaic products obtained following the TÜV, CE, China's "Golden Sun" certification after another international authority to obtain certification, demonstrating their growing technical strength and a strong sense of quality goods, which will surely help to accelerate the pace of opening up the North American market, continuously improve the sun products in the international market share and reputation.ETL certified to obtain the product that they meet the appropriate North American safety standards and the adoption of the U.S. National Accreditation Testing Laboratory (NRTL) test, but also on behalf of the manufacturers agreed to receive a strict regular inspections to ensure product quality and consistency.

Hefei Sunlight Power Supply PV grid-connected inverter SG3KTL / SG4KTL will be available in January next year

Hefei Sunlight Power Supply PV grid-connected inverter SG3KTL / SG4KTL will be available in January next year

Communication:


· RS485 / Ethernet / GPRS Communication Interface

* Computer Monitoring Software



Safety:

* Improve the protection function: over-voltage protection, short circuit protection, isolated island protection, thermal protection, overload protection

* Standard: EN61000-6-1, EN61000-6-2, EN61000-6-3, EN61000-6-4, EN61000-3-2, EN61000-3-3, EN60164-1-1, EN55022, EN50178

Features:
• High conversion efficiency up to 97.3%
* Outdoor design (IP54) to adapt to the harsh use of the environment
* Maximum Power Point Tracking (MPPT) efficiency of "99.9%
* Multi-lingual LCD display features are free to set the
* A variety of communication interfaces to choose from, can easily monitor the realization of host computer
* Improved protection, greater reliability of the system
* Wide DC input voltage range
* User-friendly interface, by pressing a button to set the various operating parameters
* Can be realized combination of multiple inverters in parallel operation of power plants designed to simplify
* High-quality aluminum design, small size, light weight, easy to install
* Adapt to high altitude applications ( "6000 meters)
* Dip waterproof terminal
* European CE certification

Overview:


SG3KTL / 4KTL transformer-free design, a higher conversion efficiency, compact appearance, small size and light weight. Port using inline waterproof terminals, wiring convenient, safe and reliable. Applies to household-based small-scale photovoltaic power plants can also be group of strings to use.

SMA Group Invested in Inverter Production in the U.S.A.

SMA Group Invested in Inverter Production in the U.S.A.

Core Tip: SMA Group has signed an agreement on plant construction, which was declared by SMA "the nation's largest photovoltaic inverter manufacturing plant". SMA has signed a long-term agreement with the local owner of land and construction. In addition, the local factory location has also begun to negotiate.
SMA Group will set up an inverter production plant in Denver, Colorado, which will be the first inverter plant outside German.
The annual capacity of this plant is approximately 1GW. It planed to put into production in mid 2010 and the estimated investment was about 15 million U.S. dollars. The new SMA United States plant will produce new products supplying for the North American market, whose product series are the Sunny Boy, Sunny Central and Sunny Island.
"For a medium-term, we can expect that the U.S. market will become the world's largest one in solar market." Chief Executive Officer Günther Cramer from SMA Solar Technology, Inc. said, "Due to the construction of the new Denver facility, SMA will reduce the transportation and temporary storage costs, and currency exchange rates risk. "

Input Rectifier and Output Inverter

Input Rectifiers: From the three-phase power supply current of each phase first introduced. The introduction of non-sinusoidal current, and not as a standard AC sine wave, as the conversion process but in the rectifier distortion generated. Distortion means that the supply current waveform contains harmonics due to distortion of the waveform can be decomposed into a set of sinusoidal components, both people are talking about harmonics. As the power supply is a standard symmetrical three-phase power, while the rectifier is a part of the open-loop is not controllable, so the harmonics of the "second" number is certain, so harmonics generated by rectifier part of the very few.

The output inverter: DC flowing through the filter capacitor filter and high-power IGBT inverter transistor switching elements for the exchange of variable frequency voltage. In the inverter output circuit, the output current is modulated by the PWM carrier signal pulse shape, high-power inverter for the GTR components, and its PWM carrier frequency of 2 ~ 3kHz, while the IGBT inverter high-power components, the maximum PWM carrier frequency can be up to 15kHz. Similarly, the output loop current of sine wave can be decomposed into only with the fundamental and other harmonics, the main harmonic frequency for the first time (fundamental, 50Hz), the fifth harmonic (250Hz) the seventh harmonic wave (350Hz), the 11th harmonic (550Hz), the 13th harmonic (650Hz). We are working mechanism from the inverter can be seenInverterMost of the harmonics and interference are generated in the inverter, the high-order harmonic current of load there is a direct interference (when the role of the motor when the motor manifestations were fever, sound ugly. When the role of analog devices when the , meter pointer and readings bounce, these phenomena are subject to interference phenomena), the other high-order harmonic currents through the cable to the space radiation can interfere with nearby electrical equipment.