Select DC dispatch or AC dispatch

Sinexcel PCS supports 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 a 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

In AC dispatch mode,

You can

• designate AC active power (total, but NOT each string for multi-string version)
• designate AC reactive power
• activate P-PF, Volt-VAr, Freq-Watt, Volt-Watt

You can NOT

• designate DC power
• designate DC current

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 P-PF, Volt-VAr, Freq-Watt, Volt-Watt

You can NOT

• designate DC power
• nor designate DC current

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 P-PF, Volt-VAr, Freq-Watt, Volt-Watt