APPARATUS FOR CONTROLLING POWER OUTPUT

摘要

An apparatus (100) for controlling power output comprising: a controller (120) configured to adjust a power output of an inverter (14, 214, 215) of a power 5 generation system (200) which comprises a load (17) to which the power output (16, 216, 217) of the inverter is connected, said power generation system (200) being connected (18) to an electricity supply grid; and a detector (110) for providing input to the controller (120), the detector being adapted to detect the input (at 22) of the electricity supply grid to the power generation system (200); 10 wherein the controller (120) is adapted to adjust the power output of the inverter (14, 214, 215) downwards when the detected input power of the electricity supply grid to the power generation system is below a first, lower, predetermined threshold and to adjust the power output of the inverter upwards when the detected power input of the electricity supply grid to the power generation system 15 is above a second, higher, predetermined threshold. Figure 2 for publication System Power Turns On 1.Ceking Building Power Usage Inverter Disconnected 30 seconds elapsed while N imported flow >03kW disconnects 2lInverter Startup Period n 20 -mins Inverter Connected, Ye~s Raped t o minue lc .outu 60 seconds elapsed 5 seconds elapsed after inverter ramped to minimum 3 agtBn output. 3 agtBn No change to inverter output. Net export flow Net import flow >0kW 0.3kW Net export flow Net import flow <=OkW >= 0.3kW 4. Exported Power > 0 S.imported Pwr > 03kW Ramp inverter output Ramp inverter output UP DOWN at 20%/sec at 3%/sec .Fault -(:nverter Disconnected (Requires Power Cycle)