When the sun hits a solar panel, it creates DC electricity. When panels are strung together, all the DC power usually gets sent along to a central string inverter. The inverter converts the power into AC electricity your home appliances use.

This setup works very well for a majority of solar system setups. However, if you have a roof with partial shading issues or multiple orientations, your power output will suffer. That’s because the production of the string of panels is limited by the performance of the worst performing panel.

Shade is no friend of solar. In fact, just a little bit of shade on one solar panel can reduce the output to all of your panels. When solar panels are wired together in series, shade on one panel acts like a kink in a hose and reduces the output of the rest of the solar panels.

Following on this logic, let’s say we had 10 panels all producing 200W, a total of 2000W. If one solar panel is partly shaded and can only produce 100W, then every panel could only do 100 W, so we would lose half of the power just because of one solar panel in shade.

SUNKEAN’S PV module external optimizers account for this problem by using a technology called maximum power point tracking (MPPT).The power optimizer can be attached to the back of each solar panel in the array. They turn individual panels into smart modules by tracking their peak output and regulating their voltages before sending power to a central inverter. This optimizes the performance of each panel in the solar system, regardless of the orientation of the sun, shade, or even damage to one or more panels.

Product Application

⚫ Applies to all types of modules, Optimization +Voltage Limiting +Anti-Hotspot;

⚫ Based on power optimization chip, eliminate panel or cell level mismatch;

⚫ Solve the current mismatch issues caused by shading gradients, aging variations, temperature gradients, soiling gradients, etc;

⚫ Optimize power generation, lower LCOE, improve solar system reliability, extend the service life of module.

Product Benefits

⚫ 3% ~ 25% optimization, retrieve power generation loss

⚫ 33% Long string installation available due to Voltage Limiting

⚫ Δ < 10℃ Anti-Hotspot, more safe and durable

If you want to know more information about our PV module external optimizer, please contact our sales manager, we will be happy to provide you with professional service.