Chung Sang Min: Micro-inverter market will grow substantially

Micro- inverters and distributed maximum power point tracking (MPPT) solution as a PV inverter market in the emerging field , is expected to grow significantly , from 2010 to 2015 the average annual compound growth rate of up to 77%.

    From the point of view of power systems , photovoltaic technology focuses on the following two aspects.

First, from the perspective of photovoltaic systems , photovoltaic industry is one of the biggest challenges facing the shadow of the solar panel problems . Shadow changes , solar panels and panels of aging on the dirt , the voltage of the panels will be on impact , causing the output voltage in series with the panel changes . Micro-inverter will be one alternative solution , it can achieve in the panel -level maximum power point tracking (MPPT), has the advantage beyond the central inverter .

MPPT solar panels can be made ​​in each optimal power point , without the need for serial solar panels arranged in series , can minimize shadowing problems . The second is from the perspective of power devices , since the main PV system vendors have their own patent application PV inverter topology , semiconductor suppliers must develop specific products. Therefore, these companies need to keep evolving solar inverter market emerging technology trends.

For example , the need to increase the input voltage to achieve greater efficiency , it is necessary to use 650V or more MOSFET / IGBT. You might also want to use SiCSBD as a complete solution. In addition, to expand the market share of more than 10kW , you must use IGBT / SPM modules.

For below 10kW grid-connected photovoltaic inverter solutions , Fairchild provides field stop (FS) IGBT and SupreMOSMOSFET devices have entered the market with the necessary high performance and high reliability low EOFF advantage . For micro-inverters , Fairchild has a medium-voltage MOSFET and SupreMOS technology to provide superior performance for such applications .