Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== Select DC dispatch or AC dispatch ====== Sinexcel PCS supports DC dispatch and AC dispatch ===== What is DC dispatch and AC dispatch ===== An inverter is a bi-port network, it has two ports, DC and AC. In theory, the AC power equals to DC power, if there's no self consumption. But actually, there is an efficiency issue. We have the following equtions In Charging $$P_{DC}=P_{AC}\times \eta _{charge}$$ In Discharging $$P_{AC}=P_{DC}\times \eta _{discharge}$$ Once one of $P_{DC}$ and $P_{AC}$ is designated, the other one is determined. Depending on the designated port, there is AC dispatching mode and DC dispatching mode ===== AC dispatch===== In AC dispatch mode, You can * designate AC active power (total, but NOT each string for multi-string version) * designate AC reactive power * activate PF-P, Volt-VAr, Freq-Watt, Volt-Watt You can NOT * designate DC power * designate DC current ===== String dispatch===== String dispatch mode is kind of AC dispatching for multi-string PCS, You can * designate AC active power** of each string for multi-string version**, but NOT total power * designate AC reactive power in total (total, but not each string for multi-string version) * activate PF-P, Volt-VAr, Freq-Watt, Volt-Watt You can NOT * designate DC power * nor designate DC current ===== DC dispatch===== In DC dispatch mode, You can * designate DC power but not DC current (of each string for multi-string version) * or designate DC current but not DC power (of each string for multi-string version) You can NOT * designate AC active power * designate AC reactive power * activate PF-P, Volt-VAr, Freq-Watt, Volt-Watt how_to/dc_dispatch_and_ac_dispatch.txt Last modified: 2020/09/16 21:42(external edit)