"Solar battery module the brink of a major transformation. For us, will have a lot of business opportunities." This statement is issued by Texas Instruments (TI) is responsible for solar cell-related business Dave Freeman. Freeman was in May 2009 set up a specialized solar cell business team, the author on the future of its solar cell industry trends, interviews were conducted.
- Solar battery module What is meant by change?
Originally multiple solar battery module in series, another link with the inverter. Therefore, there is sunshine if there is a result of the uneven and unequal characteristics lead to decline in power output module, the overall output power can greatly reduce the problem.
In order to solve this problem, each solar cell modules in the future may be equipped with inverter and converter. It's called "micro-inverters" and "micro-converter." This can be achieved by each module to optimize the output power, making the overall output power to maximize. In addition, the combination of words and communication functions can also be used to monitor the status of each module, to detect faulty modules.
- Is expected to apply to what purpose?
Micro-inverter is equipped with all of the various modules available on the function of the inverter. In other words, from the optimization of output power to the DC-AC conversion by the module to carry out. The output power from the module exchanges can be directly incorporated into the grid. As the construction easy, so the installation of residential and commercial facilities, businesses should there is a demand.
Micro-converter output power of each module optimization and DC-DC converter, and the remaining DC-AC converter is set by the other inverter to complete. Micro-converter positioned in the existing inverter and between the micro-inverter. As the solar cell module output power of DC, so it can generate electricity directly to the DC state be used to charge batteries. No electricity area of wireless communication base stations, which do not access to network facilities, there is demand for an independent.
In addition, there may also be a large demand forsolar power stations. How do large-scale solar power plants exist a huge number of solar cell modules to find fault module problem. The chip is equipped with control and communication micro-converter will help to solve this problem. As the micro-inverter is higher than the price of micro-converter, it is difficult to import large-scale solar power stations.
- Popularity of micro-and micro-inverter converter what difficulties are currently exists?
The challenge is cost, conversion efficiency and reliability. Judging from the current price of view, the current inverter for 60 cents / W, while the micro-inverter to one U.S. dollars / W. If we can achieve the same level below, we hope to achieve universal access. In the inverter part of the conversion efficiency, the goal is to achieve with existing inverter considerable 98%. The reliability of solar cells and modules will have to very, reaching a level able to work for 20 years.
If these difficulties can be resolved, shipments will be expected to exceed the current inverter. ISuppli forecasts the United States, the original inverter shipments in 2012 of 130 million to 1.4 million units, while the micro-and micro-inverter converter total shipments in 2012 will reach about 800 million units. Currently the U.S. has been the risk of micro-enterprises and other enterprises and micro-inverter converter start development.
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