Marine vessel operated with hybrid turbocharged internal combustion engine

A turbocharger comprising:

• a compressor driven by a turbine to boost ambient air to an internal combustion engine;
• an electric motor coupled to a rotary shaft of the compressor;
• a power conversion unit to convert direct-current power to alternating-current power to supply the electric motor;
• a smoothing capacitor coupled to a direct-current bus, the direct-current bus coupled to the power conversion unit;
• and
• a control unit to send a control signal to the power conversion unit to reach a measured value of a generator motor speed to comply with a value of a generator motor speed command of an input signal to the electric motor, from an upstream controller, during operation of the electric motor,
• wherein the control unit to generate a control command to increase an excitation current value and to send the control command to the power conversion unit if the value of the generator motor speed command of the electric motor is less than a value of the measured generator motor speed and a line-to-line voltage of the smoothing capacitor is equal to or greater than a predetermined threshold value that was set for the line-to-line voltage during operation of the electric motor.

A marine vessel comprising:

• a turbocharger, including:
• a compressor to be driven by a turbine of the marine vessel to boost ambient air to an internal combustion engine;
• an electric motor coupled to a rotary shaft of the compressor;
• a power conversion unit to convert direct-current power to alternating-current power to supply the electric motor;
• a smoothing capacitor coupled to a direct-current bus, the direct-current bus coupled to the power conversion unit;
• a control unit to send a control signal to the power conversion unit to reach a measured value of a generator motor speed to comply with a value of a generator motor speed command of an input signal to the electric motor, from an upstream controller, during operation of the electric motor,
• wherein the control unit is to generate a control command to increase a value of an excitation current value and to send the control command to the power conversion unit if the value of the generator motor speed command of the electric motor is less than a measured value of the generator motor speed and a line-to-line voltage of the smoothing capacitor is equal to or greater than a predetermined threshold value that was set for the line-to-line voltage during operation of the electric motor.