battery.cc

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#include "battery.h"
#include <string.h>


battery :: battery(dsim_model_setup *setup) : dsim_model(setup)
{
}

void battery :: initialize_data()
{
        dsim_model::initialize_data();
    
    double charge_rate      = 2000;
    double battery_charge   = 0;
    double max_charge       = 20000000;
    
    max_charge_dsim         = create_parameter("max_charge",            sd_type_double, &max_charge,        1,1,    "J",    "Maximum charge");
    charge_rate_dsim        = create_input("charge_rate",               sd_type_double, &charge_rate,       1,1,    "W",    "Charge rate");     
    battery_charge_dsim     = create_integrated_state("battery_charge", sd_type_double, &battery_charge,    1,1,    "J",    "Battery charge");
    
    create_outlet( power_dsim, "power", sd_type_double,  "W",    "Power flow.");

    
    battery_charge_dsim.mark_telemetry();
    max_charge_dsim.mark_command_and_telemetry();
    power_dsim.mark_telemetry();
    charge_rate_dsim.mark_command_and_telemetry();
                
}

void battery :: initialization_complete()
{
    dsim_model::initialization_complete();
}

void battery :: rhs( double t, double jd )
{    
        dsim_model::rhs(t,jd);
    
    double power        = power_dsim.value_as_double();
    double charge       = battery_charge_dsim.value_as_double();
    double charge_rate  = charge_rate_dsim.value_as_int();
    
    double charge_dot   = 0;
    
    if( (charge < 0 && power < 0) || (charge >= max_charge_dsim.value_as_double() && power > 0) )
    {
        charge_dot = 0;
    }
    else
    {
        if( power < charge_rate )
        {
            charge_dot = power;
        }
        else
        {
            charge_dot = charge_rate;
        }
    }
    
        battery_charge_dsim.set_derivative(charge_dot);
}

void battery :: post_calculate()
{
    dsim_model::post_calculate();
}

extern "C"
{
    dsim_model *Battery(void *setup);

        dsim_model *Battery(void *setup)
        {
                return new battery((dsim_model_setup *)setup);
        }
}