Considerations to select the voltage at the DC bus, the required voltage at the input of the charge regulator

Some rules of thumb regarding selection of the appropriate DC bus voltage of the battery system:


If                  PPV < 600 Wp-------Use 12 V DC bus system

If     600 Wp <PPV<1500 Wp--- Use 24 V DC bus system (regular)

 If     1500Wp <PPV-------------- Use 24 V DC or higher bus system (Block)

Selection of the appropriate DC voltage required at the input of the charge regulator

To satisfy the ability of the PV system to charge the battery system