August 19, 2013,
"micro-inverter technical requirements and test methods" expert group
to review by the National Certification and Accreditation Administration Committee.
Review Conference of the National Standardization Technical Committee on Energy
and management of new energy and renewable energy sub-technical committee
chaired by the national commission Technology and Standards Management
Department, China Renewable Energy Society photovoltaic special committee, the
State Quality Supervision, Inspection and solar photovoltaic products Center,
China Three Gorges New Energy Company, China Merchants New Energy Holdings
Limited, Rheinland testing and certification services (China) Co., Ltd, Baoding
Tianwei Electric Automation Co., Ltd. and other units of the North more than 20
experts attended the meeting. Beijing Certification
The expert group reviewed the view that CGC's "micro-inverter technical requirements and test methods" meet the requirements of the National Certification and Accreditation Administration of authentication technology management approach, provides the definition of microinverters, structure, mechanical properties, electrical technical performance and safety requirements and test methods, the content of scientific and reasonable, in line with the requirements of micro inverters.
The certification review team agreed by reviewing technical specifications, while giving a higher rating, that the certification specifications to fill the gaps, improve product quality micro-inverter, regulate the market for the development of
photovoltaic industry provides a technical support. China
Partially shaded solar cell modules, and for different angles of inclination orientation, dirt, different degrees of aging small cracks and different temperatures likely to cause such a photovoltaic panel system mismatch between the output efficiency defects decrease, leading to overall output power is significantly reduced. This is the focus of the inverter is difficult to solve the problem.
To solve this problem, in recent years, a "micro inverter" new structure, i.e. micro power inverter with each solar cell module through the module output power is optimized so that the overall output power is maximized, Even if some panels are affected shadows, dust cover, etc., the micro-on grid inverter power optimizer can still track the best local MPP (maximum power point), irretrievably lost a lot of electricity. Meanwhile, the micro-power optimizer input voltage / current is converted to a different output voltage / current to maximize energy transfer system.