Abstract:
A homopolar direct current electromagnetic motor (HET) and an application system thereof are provided. The homopolar direct current electromagnetic motor includes two rotors, a stator, an external auxiliary system and an adjustment control system. Each of the rotors has one or more axisymmetric-shaped rotor magnetic conductors (3), the stator has one or more direct current excitation coils (9) wound around a central axis of rotation (1). A main magnetic circuit (22) is guided to be a closed ring by the axisymmetric magnetic conducting structure of the rotor and the stator. There are at least two main magnetic circuits, the main magnetic circuits passing through rotor magnetic conductors and stator magnetic conductors (7), and at most one of main magnetic circuits passes through rotor magnetic conductors of the motors simultaneously. There is a closed main current (IO) loop (23), the loop is connected with all of the rotor magnetic conductors, a rotor conductor (4), a dynamic/static circuit connecting medium (5), stator conductors (6, 11) and stator magnetic conductors in series or series-parallel. A direction of a main current on the rotor magnetic conductors is perpendicular to a direction of magnetic flux (#) on meridian plane. The main current and magnetic torque of each of the rotors is controlled through adjusting currents (I1, I2, ...) of direct current excitation coils.
Abstract:
Not only is frictional load minimized when an auxiliary device is being driven, but energy loss is minimized by allowing for the selection of an efficient drive source. Provided are an engine (1), a motor/generator (2), and a compressor (3). In the present drive apparatus for a vehicle auxiliary device, an engine roller (4), a motor/generator roller (5), and a compressor roller (6) are linked to a rotary shaft of each of the engine (1), the motor/generator (2), and the compressor (3). A first idler roller (7), a second idler roller (8), and a third idler roller (9) are disposed at gap positions formed between the rollers (4), (5), (6). Also provided is a roller pair selection mechanism (10) for selecting a power-transmitting roller pair from among the rollers (4), (5), (6) by moving the idler rollers (7), (8), (9) in roller contact directions, thereby interposing the idler rollers (7), (8), (9) therebetween.
Abstract:
An electric drive apparatus includes a controller for controlling an electric motor and a continuously-variable transmission connected with the motor. The controller controls the motor and the continuously-variable transmission in a first control mode to control the transmission ratio of the continuously-variable transmission to a predetermined fixed ratio so as to hold the transmission ratio at the fixed ratio, and to control the motor to achieve the demand motor torque when a demand motor operation point determined from a predetermined assumed ratio is within a predetermined operation range, and to control the motor and the continuously-variable transmission in a second control mode to vary the transmission ratio and to control the motor to achieve a desired driving torque for a driven member driven by the motor when the demand motor operation point is not within the predetermined operation range.
Abstract:
An electric drive apparatus includes a controller for controlling an electric motor and a continuously-variable transmission connected with the motor. The controller controls the motor and the continuously-variable transmission in a first control mode to control the transmission ratio of the continuously-variable transmission to a predetermined fixed ratio so as to hold the transmission ratio at the fixed ratio, and to control the motor to achieve the demand motor torque when a demand motor operation point determined from a predetermined assumed ratio is within a predetermined operation range, and to control the motor and the continuously-variable transmission in a second control mode to vary the transmission ratio and to control the motor to achieve a desired driving torque for a driven member driven by the motor when the demand motor operation point is not within the predetermined operation range.
Abstract:
A target drive force is computed according to an accelerator pedal opening. A target input rotation speed lower limit basic value to an automatic transmission is computed based on a vehicle speed and a shift range of the automatic transmission. A target drive force lower limit correction value is computed based on the target input rotation speed lower limit basic value. The target drive force is corrected based on the target drive force lower limit correction value. A target input torque of the automatic transmission is computed based on the target drive force after correction. An input torque to the automatic transmission is controlled to the target input torque. By this control, an arbitrary drive force characteristic can be obtained in a PTD control.