Abstract: The invention is based on a method for detecting slip in the driving of generator or starter-generator systems. The alternators of these systems are equipped with electronic control components such as pulse-width-modulated inverters or rectifier bridges. The drive torque of the alternator is transferred to this by means of a belt drive of an internal combustion engine. When slip is detected in a comparison step (3), to which speed-dependent input variables (1, 2) are forwarded, the maximum transferrable drive torque is determined in a torque limiting step (18, 20), and a closed-loop control (23) adjusts the generator output power to said maximum transferrable drive torque.

Abstract: A combination of a base and an axle tube is provided for a motor. The base includes a tubular body and an axial hole through which the axle tube extends. A flange extends upward from a peripheral edge delimiting the axial hole. At least one positioning groove is defined in an inner periphery of the flange. The axle tube includes at least one protrusion on an outer periphery thereof for engaging with the positioning groove of the base. At least one resilient hook rod is formed in the tubular body of the axle tube and has a hook for securely retaining a stator around the axle tube and for securely retaining at least one bearing in the axle tube.

Abstract: A wind power generating system for generating electricity from wind generated by moving vehicles. The wind power generating system includes at least one generating assembly being designed for being positioned proximate the road. The generating assembly is designed for being engaged by the wind generated by vehicles on the road whereby the generating assembly produces electricity when the generating assemblies are engaged by the wind. The generating assembly is operationally coupled to a substation whereby electricity produced by the generating assembly is transferred to the substation for distribution. A frame assembly is coupled to the generating assemblies. The frame assembly is positioned proximate the road whereby the frame assembly is for supporting the generating assemblies in a position optimizing engagement of the generating assembly by the wind when vehicles are traveling along the road.

Abstract: A ferrofluidic electromagnetic power supply firmly attached to an agitating object, such as the interior of a vehicular tire generates electric current in an electrical coil deposited between and firmly attached to an hermetically sealed housing made of non-magnetic material partially filled with ferrofluid and a permanent magnet axially polarized. The ferrofluid and the permanent magnet form a magnetic circuit extending from the ferrofluid through the coil to the permanent magnet and back to the ferrofluid. Agitation of the power supply will cause dislocation of the magnetized ferrofluid within the sealed housing causing induction in the electrical coil.

Abstract: In a rotary electric machine, a stator coolant passage means including a stator coolant tube and a damping member is provided between the inner periphery of a front housing and a stator core to surround the stator core. Since the stator core is cooled by coolant flowing in the stator coolant tube, heat transmission from the stator core to the damping member is decreased. Thus, the damping member is restricted from deteriorating due to high temperature. Further, an additional coolant tube is provided separately from the stator coolant passage means to cool heat-generating bodies such as a commutating device and a voltage generator. The coolant flows in the stator coolant tube prior to the additional coolant tube so that the coolant flowing in the stator coolant tube is not thermally affected by the coolant flowing in the additional coolant tube.

Abstract: An alternator for use in an automotive vehicle includes a circuit for detecting initiation of rotation of an engine. Upon detecting the initiation of rotation, excitation current supply to a field winding is started, and thereafter an alternator output is controlled by controlling the excitation current. A resistor is connected to one phase winding of an armature to obtain a voltage indicating initiation of rotation during a period in which no excitation current is supplied to the field winding, and a capacitor is connected to another phase winding to raise the indicating voltage level. Since the indicating voltage induced by a small amount of residual magnetism is increased to a sufficient level by the capacitor, the initiation of rotation can be accurately detected.

Abstract: A slim motor good for a portable device includes a frame, pipe, magnet, coil, shaft, first bearing and a second bearing (inside bearing). The pipe is disposed on an inner wall of the cylindrical magnet, and an outer diameter of the second bearing is set at approx. the same as that of the pipe. The second bearing is aligned to the pipe in an axial direction and fixed on the inner wall of the magnet. This structure allows the magnet to extend axially long enough, and solves conventional problems including power consumption, slant of the shaft, motor efficiency, productivity and the like, thereby contributing to achieving a slimmer motor and a slimmed-down device.

Abstract: The invention provides a commutator motor capable of reducing vibration and noise generated in commutator motor and improving durability against breakage of armature. A commutator 3 having a conductive section 32 mounted on a rotary shaft 1 through an insulating section 31 is provided with a vibration-isolating member 33 made of rubber by adhesion or integral formation at the location between the conductive section 32 and the rotary shaft 1, for example, between the insulating section 31 and the rotary shaft 1 or between the conductive section 32 and the insulating section 31. In one aspect of the invention, another vibration-isolating member supports a brush holder 4 for holding a brush 41 coming in contact with the commutator 3.