University of South Wales Master of Sciences Thesis
Power outputs of a PV-panel and a wind turbine
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| 3.2.2. Power outputs of a PV-panel and a wind turbine
With the renewable resource profiles (Figure 3-2) at hand, the corresponding powers that can be harnessed from the RESs can be calculated. The average hourly insolation data on a single PV-panel shown by Figure 3-3 can be converted into power output from the PV-panel using the following equation [30]. 3.1 And the power when referred to the DC-bus where the PMSs are applied can be given as: 3.2 Where, Ppv (t) = power output from the PV-panel (W) Ins(t) = insolation data at time t (W/m2) A pv = area of a single PV-panel (m2) η pv = overall efficiency of the PV-panel η dd = efficiency of the DC/DC converter (regulator) From the average hourly wind speed profile (Figure 3-2), if the wind speed is between the cut-in and the rated speed of the wind turbine, the power output at the AC-bus can be evaluated [30] by: 3.3 The wind turbine output power referred at the DC-bus where the PMSs are applied can be given by: 3.4 Where, P wind (t) = output power of a wind turbine (W) r = Air density (Kg/m3) Arot = Rotor area (m2) v(t) = wind speed (m/s) Cp = Efficiency of wind turbine η ad = Efficiency of AC/DC Standalone hybrid generation system for the remote area of Thar, Pakistan The parameters which are used for the calculations of powers from a PV-panel and a wind turbine are from the datasheets 330 SunPower modules (SPR-305) and E33 330 kw wind turbine [24, 32] whose details can be referred to the Appendix. If wind speed is between the rated speed and the furling speed of the wind turbine, the power output will be equal to the rated power of the turbine and if the wind speed is either less than the cut-in speed or greater than the furling speed of the wind turbine, then the output power will be zero [30, 33]. The output power from a single PV-panel and a wind turbine, with the selected parameters of PV- panel & wind turbine and the available resources, which are all mentioned above, are calculated with the above equations equation-3.1 and equation-3.1 respectively. The resulting powers are shown by the following power curves (Figure 3-3). tải về 6.62 Mb. Chia sẻ với bạn bè của bạn:
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