The future of PV inverter assembly

PV inverter market recently surging, April 22, ABB came news of the acquisition of Power One vibration industry. People have speculated that the electrical equipment giant and the world's second largest manufacturer of photovoltaic inverters marriage of what changes will bring the photovoltaic industry. With the major components of the market giants leave the flesh is different inverter market is indeed acquisitions frequently.

In early April, the Photon magazine was a very eye-catching German dc to ac power inverter manufacturer REFUsol acquisition by the U.S. company Advanced Energy late last year, the acquisition of the domestic industry a brother SMA cable manufacturers MeV love. The major manufacturers in the direction toward the bigger and more powerful strides, coupled with China's western photovoltaic "leap forward", some domestic manufacturers that "one hundred kilowatts below the small loom we simply do not do it."

Compared with the component, the inverter technology innovation more slowly. Especially large inverter (utility-scale inverter) each topology (topology), control methods, switching devices are similar, but the stability of the product and the actual efficiency is need long-term experience in engineering design. On the other hand, large-scale projects also need to do this kind of technical support for localization, marketing, government relations, financial support, the future winner in doubt, but the multinational giants have been ahead of others in several ways.

But it is an entirely different story in academia, laboratories inverter is getting smaller and smaller. Engage in research of PV inverters should have read Frede Blaabjerg, Denmark Aalborg University professor and his students to write about the PV inverter (PV inverter) review articles.

The article mentioned the inverter a trend, a large central inverters (centralized inverter) is already very mature past tense, then (2005) is more popular string type (string inverter) and communication components (AC module) / micro-inverters (micro-inverter), the future trend will be the exchange of components or even AC battery (AC cell).