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Add capacity factor input to tidal turbine ssc_eqn #1218

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Add capacity factor input to tidal turbine ssc_eqn #1218

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175780c
Add capacity factor input to tidal turbine ssc eqn
mjprilliman Oct 8, 2024
35c62c8
Update variable names to indicate target capacity factor
mjprilliman Oct 8, 2024
531d278
Add option to use tidal turbine with time series velocity
mjprilliman Oct 9, 2024
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5 changes: 4 additions & 1 deletion ssc/cmod_mhk_eqns.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,7 @@ bool me_array_cable_length(ssc_data_t data)
vt_get_number(vt, "water_depth", &water_depth);
vt_get_number(vt, "number_devices", &number_devices);
vt_get_number(vt, "distance_to_shore", &distance_to_shore);



double length = (devices_per_row - 1) * device_spacing_in_row * number_rows + row_spacing * (number_rows - 1);
Expand Down Expand Up @@ -98,9 +99,9 @@ bool tidal_turbine_calculate_powercurve(ssc_data_t data)

double rotor_diameter, cut_in,
cut_out, rotor_area, number_rotors = 0;
double target_cf = 0.3;
double rated_power_rotor = 0;
double generator_rated_capacity = 0;
double target_cf = 0;
util::matrix_t<double> tidal_resource;
std::vector<double> pto_efficiency;
std::vector<double> max_cp;
Expand All @@ -112,6 +113,7 @@ bool tidal_turbine_calculate_powercurve(ssc_data_t data)
vt_get_array_vec(vt, "pto_efficiency", pto_efficiency);
vt_get_number(vt, "cut_in", &cut_in);
vt_get_number(vt, "cut_out", &cut_out);
vt_get_number(vt, "target_cf", &target_cf);
vt_get_matrix(vt, "tidal_resource", tidal_resource);
//vt_get_number(vt, "generator_rated_capacity", &generator_rated_capacity);
//vt_get_number(vt, "tidal_turbine_target_cf", &target_cf);
Expand All @@ -136,6 +138,7 @@ bool tidal_turbine_calculate_powercurve(ssc_data_t data)
powercurve_powerout.resize(array_size);
powercurve_powerout_rated.resize(array_size);
rotor_area = pow((rotor_diameter / 2), 2) * M_PI * number_rotors;
target_cf = target_cf / 100.0;
double tidal_vel, p_fluid, p_rotor, eff, p_electric;
double tidal_freq = 0;
double max_cp_value, pto_eff_value;
Expand Down