Drive control apparatus of series hybrid vehicle
First Claim
1. A drive control system for controlling a series hybrid vehicle having an engine, a generator, a battery, and a motor, wherein an output of said engine activates said generator so as to generate an output voltage according to a field current, an output voltage of said generator charges said battery, and wherein the output voltage from said generator and/or the voltage supplied from said battery activates said motor, said drive control system comprising:
- means for selecting a mode to activate said motor solely by said battery, a mode to activate said motor solely by said generator, or a mode to activate said motor by said generator and said battery according to a required motor output;
means for determining an output voltage for said generator according to the selected motor activating mode so as to obtain the required motor output; and
means for controlling a field current of said generator so as to obtain the determined output voltage, thereby selecting a motor activating mode in which the motor operates.
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Accused Products
Abstract
A drive control apparatus for a series hybrid vehicle. The series hybrid vehicle includes an engine, a generator, a battery and a motor. The generator is activated by electricity from the engine so as to drive the motor. The battery is charged by the electricity from the generator, being discharged so as to provide a voltage to the motor. In other words, the motor is also activated by discharging electricity from the battery. There are three modes for activating the motor, i.e. a mode for activating the motor only by the battery, a mode for activating it only by the generator, and a mode for activating it both by the battery and the generator. The motor activating modes will be selected depending upon a required motor output. An output voltage of the generator is determined so as to derive the required output according to the selected mode. The generator is of a type which can output a voltage according to a field current. The field current of the generator is controlled so as to obtain the required output voltage.
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Citations
16 Claims
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1. A drive control system for controlling a series hybrid vehicle having an engine, a generator, a battery, and a motor, wherein an output of said engine activates said generator so as to generate an output voltage according to a field current, an output voltage of said generator charges said battery, and wherein the output voltage from said generator and/or the voltage supplied from said battery activates said motor, said drive control system comprising:
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means for selecting a mode to activate said motor solely by said battery, a mode to activate said motor solely by said generator, or a mode to activate said motor by said generator and said battery according to a required motor output; means for determining an output voltage for said generator according to the selected motor activating mode so as to obtain the required motor output; and means for controlling a field current of said generator so as to obtain the determined output voltage, thereby selecting a motor activating mode in which the motor operates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification