Electric generating system for automobiles and its control method

An electric generating system for automobiles comprising a primary generator which is driven by an internal combustion engine of an automobile and supplies power to a low-voltage electric load of said automobile and an electric motor which drives wheels of said automobile which are not driven by said internal combustion engine;

• further comprising
• a secondary generator which is driven by said internal combustion engine and
• a control unit which controls said secondary generator and said electric motor;
• wherein
• said secondary generator is built to output a power of a lower voltage to a higher voltage than the power of said low-voltage system to said electric motor and
• said control circuit controls the output of said generator according to a driving force requested by said automobile and controls the driving force of said electric motor by a voltage or current supplied from said secondary generator.

An electric generating system for automobiles comprising a primary generator which is driven by an internal combustion engine of an automobile and charges a battery on said automobile and an electric motor which drives wheels of said automobile which are not driven by said internal combustion engine;

• further comprising
• a secondary generator which is driven by said internal combustion engine and
• a control unit which controls said secondary generator and said electric motor;
• wherein
• said secondary generator is separated from said battery charging circuit and supplies its output power directly to said electric motor and
• said control circuit controls the output of said generator according to a driving force requested by said automobile and controls the driving force of said electric motor by a voltage or current supplied from said secondary generator.

An electric generating system for automobiles comprising a primary generator which is driven by an internal combustion engine of an automobile and supplies power to a low-voltage electric load of said automobile and an electric motor which drives wheels of said automobile which are not driven by said internal combustion engine;

• further comprising
• a secondary generator which is driven by said internal combustion engine and
• a control unit which controls said secondary generator and said electric motor;
• wherein
• said secondary generator is constituted to supply a variable-voltage power of a low voltage to a high voltage to said electric motor and
• said control unit controls the output of said secondary generator according to the requested driving force of said automobile and controls the driving force of said motor by a voltage or current supplied from said secondary generator.

An electric generating system for automobiles comprising a primary generator which is driven by an internal combustion engine of an automobile and supplies power to an electric load of said automobile and an electric motor which drives wheels of said automobile which are not driven by said internal combustion engine, further comprising

• a secondary generator which is driven by said internal combustion engine and
• a control unit which controls said secondary generator and said electric motor;
• wherein
• said secondary generator is constituted to supply power to said electric motor and
• said control unit contains an external control unit except for a control unit of said secondary generator, and causes said external control unit to output a field current on/off signal as a command to control said secondary generator, and thus sets an arbitrary output voltage or current of said secondary generator.