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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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how_to:dc_dispatch_and_ac_dispatch [2019/05/20 03:03] admin |
how_to:dc_dispatch_and_ac_dispatch [2020/09/16 21:42] (current) |
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| Sinexcel PCS supports DC dispatch and AC dispatch | Sinexcel PCS supports DC dispatch and AC dispatch | ||
| ===== What is DC dispatch and AC dispatch ===== | ===== What is DC dispatch and AC dispatch ===== | ||
| - | A inverter is a bi-port network, it has two ports, DC and AC. In theory, the AC power equals to DC power, if there' | + | 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' |
| - | But actually, there is a efficiency issue. | + | |
| + | But actually, there is an efficiency issue. | ||
| In Charging | In Charging | ||
| $$P_{DC}=P_{AC}\times \eta _{charge}$$ | $$P_{DC}=P_{AC}\times \eta _{charge}$$ | ||
| Line 9: | Line 11: | ||
| $$P_{AC}=P_{DC}\times \eta _{discharge}$$ | $$P_{AC}=P_{DC}\times \eta _{discharge}$$ | ||
| + | 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 | ||