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 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 with charger (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 even AC battery AC component