摘要:
A controllable combined power system including an active power source and an auxiliary power source uses the active power source as a basis for controlling the speed or torque of the auxiliary power source, either in the same direction as the active power source or in a reverse direction to provide damping.
摘要:
An insulated gate bipolar transistor (IGBT) is supplied with high voltage electric power by a power supply circuit that includes a plurality of photoelectric transducers arranged to output a high voltage, low current driving signal, and an illumination component optically coupled with the photoelectric transducers and supplied with low voltage electric power, thus allowing the insulated gate bipolar transistor to be used in low voltage applications that would otherwise result in a sudden increase in switch loss and burnout of the transistor.
摘要:
A DC circuit breaking spark suppressor device includes first and second main switch components having sequentially linked contacts for connecting a DC power supply to a main load, and a capacitor connected in parallel with the first switch component to store electricity when the first main switch component is opened, the second switch component being opened after opening of the first main switch component to disconnect the load from the power supply, after which the capacitor discharges through a discharge resistor. The discharge circuit includes a switch apart from said main switch components to isolate the discharge circuit prior to discharge, and an additional damping inductor. Alternatively, isolation of the discharge circuit may be achieved adding a contact to the second main switch component such that when the load is disconnected from the power supply, the discharge circuit is closed to cause the capacitor to discharge through the discharge resistor.
摘要:
An electric machine uses materials with hysteresis characteristics (such as cast steel) to form the field poles and magnetic flux to align with the magnetic flux in the armature excited by the inclined angle of the brushes for use as a one directional rotational electric motor, or for a generator power output if there is a mechanical work input. By utilizing the armature winding offset angle for excitation and control to eliminate the field exciting components, the machine is an improved design that has a simple structure and low cost.
摘要:
The series field winding of a compound or series motor includes a plurality of taps and, connected in parallel therewith, a transient storage element such as a capacitor, and a flywheel diode. The taps are controlled by switches in the form of transistors or thyristors which are turned on and off by a central control unit in response to setting of the speed and, optionally, various feedback devices such as a motor speed detector, an armature EMF detector, or a load current detector. The transient storage device replaces conventional linear impedance or linear power elements in order to prevent loss of power as the armature voltage is increased.
摘要:
A combined driving structure is made up of an engine and an electrical machine. The engine is connected to the electrical machine through a clutch which allows the electrical machine to be used as a starting motor for the battery, and when the engine is started, allows the engine to drive a load and also drive the electrical machine to operate as a generator. In addition, the electrical machine can be operated as a motor at low speeds to drive the load by electrical power when the engine is stopped, and as a generator to provide regenerative braking for charging the battery, either with or without friction damping of the engine by the clutch.
摘要:
A multiple function combined power system an internal combustion engine having a rotational output shaft that is coupled with an electrical machine through transmission gears, belts, or chains constituting a particular transmission device installed between the electrical machine, engine, and output shaft. The electrical machine is a series excited or auxiliary compound excited electrical machine with the electrical characteristic that its rotational speed increases with a decreasing load, or an AC or DC brush or brushless machine able to perform current control, including constant current control to provide a load-following value-added torque function, and is coupled with the engine output shaft through a particular transmission device operated in two system modes following the driving direction of the electrical machine, by means of a one-way clutch and an eccentric clutch in cooperation with control of the rotation directions of the electrical machine to cause (1) the electrical machine to start the engine, (2) the electrical machine to be used as a generator during engine operation, (3) the electrical machine and the engine to drive the load at the same time during the engine operation, (4) the electrical machine to drive the load, and (5) when the load is standing still, the engine to drive the electrical machine in a generator mode to charge the battery or other electrical loads.
摘要:
A differential motion gear system that controls the output speed ratio by changing the revolving direction of the input shaft. Different embodiments produce different combinations of output direction and output speed ratio.
摘要:
A mechanical transmission (10) includes a first gear (13), a second gear (15), a slip clutch (14), an input shaft (11), a fourth gear (20), a one-way bearing (21), a third gear (18) and an output shaft (12). The first gear (13) and the slip clutch (14) are mounted on the input shaft (11). The first gear (13) is meshed with the second gear (15) which is mounted on the output shaft (12). The one-way bearing (21) and the fourth gear (20) are mounted on the output shaft (12); the latter (20) is meshed with the third gear (18) which is mounted on the input shaft (11) to constitute a step-down gearing (22). When the load upon the output shaft (12) increases so that the torque imposed upon the slip clutch (14) is higher than predetermined, the slip clutch (14) releases, and the increased torque generated by the step-down gear set (18, 20) drives the increased load upon the output shaft (12). Two additional embodiments (10', 10") are disclosed.
摘要:
The present invention is directed to a differential coupling and compounding power system for use in a hybrid driven vehicle. The system includes a primary power source that includes an output shaft connected to a magnetic coupling and driving device. A magnetic coupling driving device can be driven by the output shaft of the engine so as to act as an alternator for charging a battery unit of the vehicle, can function as a motor to drive the vehicle while receiving power from the battery unit and can drive the vehicle in unison with the engine such that a compound power system is provided. The magnetic coupling and driving device can also function to develop a load on the engine in order to act as a vehicle brake.