SOLAR MOD. 7: CHARGE CONTROLLERS

What device decides when to stop charging the battery

bank?

• Inverter

• Charge controller

• Micro-inverters

• Transformer

What device decides when to disconnect the battery bank

from the loads?

• Charge controller

• Sunny Boy inverter

• AC-DC disconnect

• Solar pathfinder

What piece of equipment protects the batteries from being overcharged or undercharged by the array?

• Inverter

• Transfer switch

• Charge controller

• None of the above

What is “autonomy”?

• The concept of electric autos powering the economy with solar.

• The capacity to make an informed, un-coerced decision.

• Another name for a self-driving car.

• How long a battery system will provide the necessary power before needing to be recharged.

What type of controller is needed if you have a stand-alone PV system and a wind-turbine?

• Hybrid

• Non-synchronous

• Asynchronous

• Series charging

Setpoints are used if you have different types of batteries than what a controller is preset for.

What are “setpoints”?

• Points that are set in order

• The desired or target value for an essential variable, or process value of a system.

• Internal adjustments on a charge controller

• None of the above

A self-regulating PV system does not need a charge

controller.

Why not?

• It's a system that has less than 24 batteries.

• It self regulates without the need for a charge controller.

• It's a system that has 500 watts or less.

• All of the above

What happens if a charge controller is far from a battery bank and no compensation is made?

• Nothing

• The batteries could explode.

• The batteries could under-charge.

• The batteries could over-charge.

If a battery bank is in a colder or hotter location than the controller, what effect does this have?

• Batteries could over or under charge

• Batteries could freeze or boil over

• The solar array would not provide sufficient power to charge.

• Nothing happens

A certain charge controller says it does MPPT.

What is that?

• Multi-preset power testing

• Maximum power point tracking on an inverter.

• Maximum panel power test

• Maximum power point tracking on a solar panel.