手把手教你学simulink（30.9）--电力电子场景示例：基于Simulink的电动汽车充电站设计与优化

 % 添加三相整流器模块

    
 add_block('simscape/electrical/Specialized Power Systems/Power Electronics/Three-Phase Thyristor Bridge', 'Rectifier');
    
  
    
 % 设置整流器参数
    
 set_param('Rectifier', 'SwitchingFrequency', '100'); % 开关频率为100 Hz
    
 set_param('Rectifier', 'InputVoltage', '400'); % 输入电压为400 V (线电压)
    
  
    
 % 添加三相交流电源模块
    
 add_block('simscape/electrical/Specialized Power Systems/Sources/AC Voltage Source', 'AC_Source');
    
  
    
 % 设置交流电源参数
    
 set_param('AC_Source', 'Amplitude', '400/sqrt(3)'); % 相电压幅值为400/sqrt(3) V
    
 set_param('AC_Source', 'Frequency', '50'); % 频率为50 Hz
    
  
    
 % 连接交流电源到整流器
    
 connect_blocks('AC_Source', 'Rectifier');
    
  
    
 % 添加DC-DC变换器模块
    
 add_block('simscape/electrical/Specialized Power Systems/Power Electronics/Buck Converter', 'DC_DC_Converter');
    
  
    
 % 设置DC-DC变换器参数
    
 set_param('DC_DC_Converter', 'SwitchingFrequency', '100e3'); % 开关频率为100 kHz
    
 set_param('DC_DC_Converter', 'InputVoltage', '600'); % 输入电压为600 V
    
 set_param('DC_DC_Converter', 'OutputVoltage', '400'); % 输出电压为400 V
    
 set_param('DC_DC_Converter', 'Inductance', '100e-6'); % 电感值为100 μH
    
 set_param('DC_DC_Converter', 'Capacitance', '100e-6'); % 电容值为100 μF
    
  
    
 % 连接整流器到DC-DC变换器
    
 connect_blocks('Rectifier', 'DC_DC_Converter');
    
    
    
    
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 % 添加示波器模块

    
 add_block('simulink/Sinks/Scope', 'Charger_Output_Monitor');
    
  
    
 % 连接示波器到充电器
    
 connect_blocks('DC_DC_Converter', 'Charger_Output_Monitor');
    
    
    
    
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 % 添加电池模块

    
 add_block('simscape/electrical/Semiconductors/Li-Ion Battery', 'Battery');
    
  
    
 % 设置电池参数
    
 set_param('Battery', 'NominalCapacity', '100'); % 标称容量为100 Ah
    
 set_param('Battery', 'NominalVoltage', '400'); % 标称电压为400 V
    
 set_param('Battery', 'InitialSOC', '0.5'); % 初始荷电状态为50%
    
  
    
 % 添加温度传感器模块
    
 add_block('simscape/electrical/Specialized Power Systems/Measurements/Temperature Measurement', 'Temperature_Sensor');
    
  
    
 % 连接温度传感器到电池
    
 connect_blocks('Battery', 'Temperature_Sensor');
    
    
    
    
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 % 添加示波器模块

    
 add_block('simulink/Sinks/Scope', 'Battery_State_Monitor');
    
  
    
 % 连接示波器到电池
    
 connect_blocks('Battery', 'Battery_State_Monitor');
    
    
    
    
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 function [duty_cycle] = cc_cv_charging(v_battery, i_battery, v_target, i_target)

    
     % 参数设置
    
     static charging_mode = 'CC'; % 初始充电模式为恒流充电
    
     
    
     % 恒流充电阶段
    
     if charging_mode == 'CC'
    
     if v_battery < v_target
    
         duty_cycle = pidcontrol(i_target - i_battery, 10, 1); % 恒流控制
    
     else
    
         charging_mode = 'CV'; % 切换到恒压充电
    
     end
    
     end
    
     
    
     % 恒压充电阶段
    
     if charging_mode == 'CV'
    
     duty_cycle = pidcontrol(v_target - v_battery, 1, 0.1); % 恒压控制
    
     end
    
 end
    
  
    
 function [u] = pidcontrol(error, Kp, Ki)
    
     % PID控制算法
    
     static integrator = 0;
    
     integrator = integrator + error * Ki;
    
     u = Kp * error + integrator;
    
 end
    
    
    
    
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 % 添加充电控制模块

    
 add_block('simulink/User-Defined Functions/MATLAB Function', 'Charging_Controller');
    
  
    
 % 设置充电控制函数
    
 set_param('Charging_Controller', 'Function', 'cc_cv_charging');
    
  
    
 % 连接电池的输出电压和电流到充电控制器
    
 connect_blocks('Battery', 'Charging_Controller');
    
  
    
 % 连接充电控制器到充电器
    
 connect_blocks('Charging_Controller', 'DC_DC_Converter');
    
    
    
    
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 function [charging_power] = demandSideManagement(load_profile, grid_price, renewable_energy)

    
     % 参数设置
    
     static total_energy_consumed = 0; % 累计能耗
    
     static charging_power = 0; % 初始充电功率
    
     
    
     % 计算当前时刻的总负荷
    
     total_load = load_profile + charging_power;
    
     
    
     % 如果电网价格较低且可再生能源充足，则增加充电功率
    
     if grid_price < 0.1 && renewable_energy > 0.5
    
     charging_power = min(renewable_energy, 10); % 最大充电功率为10 kW
    
     else
    
     charging_power = 0; % 停止充电
    
     end
    
     
    
     % 更新累计能耗
    
     total_energy_consumed = total_energy_consumed + charging_power;
    
 end
    
    
    
    
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 % 添加能量管理模块

    
 add_block('simulink/User-Defined Functions/MATLAB Function', 'Energy_Management');
    
  
    
 % 设置能量管理函数
    
 set_param('Energy_Management', 'Function', 'demandSideManagement');
    
  
    
 % 连接负载曲线、电网价格和可再生能源到能量管理模块
    
 add_block('simulink/Sources/From File', 'Load_Profile');
    
 add_block('simulink/Sources/From File', 'Grid_Price');
    
 add_block('simulink/Sources/From File', 'Renewable_Energy');
    
  
    
 % 连接能量管理模块到充电控制器
    
 connect_blocks('Energy_Management', 'Charging_Controller');
    
    
    
    
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 % 添加负载电阻模块

    
 add_block('simscape/electrical/Specialized Power Systems/Elements/Resistor', 'Load_Resistor');
    
  
    
 % 设置负载电阻参数
    
 set_param('Load_Resistor', 'Resistance', '10'); % 负载电阻为10 Ω
    
  
    
 % 添加步进信号源模块
    
 add_block('simulink/Sources/Step', 'Step_Input');
    
  
    
 % 设置步进信号参数
    
 set_param('Step_Input', 'Time', '0.1'); % 步进时间
    
 set_param('Step_Input', 'FinalValue', '20'); % 最终值为20 Ω
    
  
    
 % 连接步进信号到负载电阻
    
 connect_blocks('Step_Input', 'Load_Resistor');
    
    
    
    
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 % 添加功率计算模块

    
 add_block('simscape/electrical/Specialized Power Systems/Measurements/Power Measurement', 'Power_Measurement');
    
  
    
 % 连接功率计算模块到系统
    
 connect_blocks('DC_DC_Converter', 'Power_Measurement');
    
  
    
 % 添加示波器模块
    
 add_block('simulink/Sinks/Scope', 'Power_Monitor');
    
  
    
 % 连接示波器到功率计算模块
    
 connect_blocks('Power_Measurement', 'Power_Monitor');
    
    
    
    
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 % 添加噪声模块

    
 add_block('simulink/Sources/Random Number', 'Grid_Voltage_Noise');
    
  
    
 % 设置噪声参数
    
 set_param('Grid_Voltage_Noise', 'Mean', '0'); % 均值为0
    
 set_param('Grid_Voltage_Noise', 'Variance', '1'); % 方差为1
    
  
    
 % 连接噪声模块到电网电压
    
 connect_blocks('Grid_Voltage_Noise', 'AC_Source');
    
    
    
    
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 % 添加过流保护模块

    
 add_block('protection_devices/Overcurrent Protector', 'Overcurrent_Protector');
    
  
    
 % 设置过流保护参数
    
 set_param('Overcurrent_Protector', 'Threshold', '20'); % 过流阈值为20 A
    
  
    
 % 连接过流保护到系统
    
 connect_blocks('Overcurrent_Protector', 'System_Model');
    
    
    
    
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 % 添加过压保护模块

    
 add_block('protection_devices/Overvoltage Protector', 'Overvoltage_Protector');
    
  
    
 % 设置过压保护参数
    
 set_param('Overvoltage_Protector', 'Threshold', '600'); % 过压阈值为600 V
    
  
    
 % 连接过压保护到系统
    
 connect_blocks('Overvoltage_Protector', 'System_Model');
    
    
    
    
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 % 添加过温保护模块

    
 add_block('protection_devices/Overtemperature Protector', 'Overtemperature_Protector');
    
  
    
 % 设置过温保护参数
    
 set_param('Overtemperature_Protector', 'Threshold', '100'); % 过温阈值为100°C
    
  
    
 % 连接过温保护到系统
    
 connect_blocks('Overtemperature_Protector', 'System_Model');
    
    
    
    
    代码解读