Is it required to connect dc dc converter for incorporating battery to the micro grid?

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Sreekanth T.

If your battery voltage is equals to common DC link, you dont need any power converter. But some times battery needs to be charged or discharged , so battery voltage differs from DC link voltage, so power converter is required at that time. Anyway it is always advisable to have power converter with battery.

Bacha Seddik

Two cases :

DC grid , if the battery voltage is in the same range of the microgrid one , it could be directly connected , but it will be not useful because the power exchanges are not directly controlled. Then a DC power electronics interface is indicated to manage the power fluxes and keep the battery in good operation saving its state of health

AC : Grid , of course it's mandatory , the discussion however is : two conversion stages or only one (DC/DC and DC/AC or only DC/AC)

K. Prakash Kumar

The charging and discharging rates of the battery are important in view of the life of a battery. The manufacturer specifies the charging/discharging rates. If you want to control these rates, you need converter.