40results about "DC interrupters" patented technology

An Electro-Mechanical Energy Conversion (EMEC) device and a method of electro-magnetically converting electrical energy to mechanical energy and electrical energy. The EMEC device comprises a stator; a rotor; a direct current power source; a commutator, and flourescent lamps acting as a non-linear, capacitive, voltage-limiting load. Four armature coils of a first magnetic polarity are concentrically mounted on a first side of the outer surface of a non-magnetic cylindrical stator casing, and four armature coils of an opposite polarity are concentrically mounted on an opposite side of the stator casing. Each coil is wound with an average of 6,650 turns of 34 AWG gauge teflon-coated wire. The rotor is constructed of non-magnetic material, and is rotationally mounted in the stator casing. A plurality of neodymium iron-boron permanent magnets are circumferentially mounted on the rotor. The magnets on a first side of the rotor are mounted with a first outward polarity, and the magnets on an opposite side of the rotor are mounted with an opposite outward polarity. The power source is connected to the coils and produces an output of 0-5,000 volts at 30 to 40 milliamperes maximum. The flourescent lamps are connected to the coils for rapidly dumping magnetic energy from the coils when the polarity is reversed. The commutator reverses the polarity of the first and second coils every 180 DEG of rotor rotation, and guides the magnetic energy from the coils to the load.

An electric motor intended for driving transport vehicles without a reduction gear is described. The electric motor can have an annular magnetic conductor of the stator with permanent magnets located on opposite sides of the magnetic conductor, and a two-section rotor, one section of which goes round the stator, while the other is inside it. The electric motor provides greater torque.

An electric motor includes a stator which carries permanent magnets, and a rotor which carries electromagnets. A particular arrangement of connecting up the windings of the electromagnets to the distributing collector and the selection of the ratio of stator magnets to rotor electromagnets enable higher torque to be achieved. The main field of application is in motor-wheels of vehicles.

The DC exciting magnetic motor has rotor on the rotating shaft and with several sets of rotor magnetic poles in the same polarity, and stator connected to the seat and with several sets of stator magnetic poles in the same polarity. At least one kind of the stator magnetic poles and the rotor magnetic poles is exciting magnetic poles operating under the control of the control mechanism comprising electric brush, metal slip ring, synchronous switching metal piece. The central line of the rotor magnetic pole cross section and that of the stator magnetic pole cross section are in an angle of 0-45 deg, and in any time,, only one set of exciting magnetic poles inside the angle excites. The pair number of the stator magnetic poles is greater than that of the rotor magnetic poles, and the motor may change its rotation direction via altering the polarity of the power supply. The present invention has no commutator, simple structure, high efficiency, great torque and other features.

The invention provides a tile type magnetic-fluxleakage permanent magnet electric motor, comprising a stator, a rotor, a direct current (DC) magnetic coil and an accessory. The poleface of the permanent-magnet pole of the rotor has the same pole as the poleface and the polarity which are printed at the centre of the stator; and the two sides of the rotor are the magnetic poles of the permanent magnet with the same standard of the heterospolar of the stator. A sharp tile-shaped magnetic-fluxleakage passive iron is fixed on the poleface of the permanent-magnet pole of the rotor so that a main magnetic circuit thereof is a tile-shaped magnetic-fluxleakage magnetic field; two pieces of tile-shaped magnetic-fluxleakage passive irons and magnetizer of DC coil polariton are fixed on the poleface of the permanent-magnet pole of heteropolar stator at the two sides so that the magnetic potential thereof rises to pole terminal; and non kinematic potential is produced when the sharp tile-shaped magnetic-fluxleakage passive iron of the rotor enters the poleface of the permanent-magnet pole, and orientated magnetic kinematic potential from the poleface to the pole terminal is produced when the sharp tile-shaped magnetic-fluxleakage passive iron of the rotor enters the half of the poleface of the permanent-magnet pole. Electromagnetic field with the same polarity which is produced on the pole terminal shields the magnetic-fluxleakage magnetic resistance, resumes the state without magnetic kinematic potential and switches off when entering the next orientated magnetic kinematic potential magnetic field. The orientated magnetic kinematic potential of the electric motor is larger than the magnetic-fluxleakage magnetic resistance when the electric motor is out of service; and the electricity-saving rate is extremely high.

A switched DC rotating electrical machine (100) comprising a stator (3), a rotor (2) and switching means (11a, 11b, 18a, 18b), an excitation winding (5) associated with one of the stator (3) or the rotor (2) having a pair of inputs, the excitation winding (5) being adapted to cause magnetization of a plurality of magnetic poles (4a - 4l), the switching means (11a, 11b, 18a, 18b) being adapted to be associated with a DC voltage source (19) to switch the output thereof to the first and a second input of the excitation winding (5), the DC voltage source (19) providing a low voltage output (-V), an intermediate voltage output (0V) and a high voltage output (+V), wherein in use the intermediate voltage output is continuously connected to the first input of said excitation winding 19 and the second input is switched in a cyclic operation by the switching means between connection with the high voltage output (+V) and the low voltage output (-V).

The invention relates to an engine provided with a plurality of magnet-wheels, which consists of a permanent magnet (1), an electromagnet (2), an electromagnet seat (3), an electric conduction copper ring (4), a straight shaft (5), a bearing (6), an end cover (7), a shell (8), a spoked wheel (9), a spoke (10), a carbon brush holder (11) and a carbon brush (12), and has the advantages of light weight, simple structure, no tail gas emission, energy conservation, etc. The engine combines part of the technology of a steam turbine with magnetic force, and has the advantages of large arm of force and moment as well as no dead center. By properly selecting the number of the spoked wheels (9) and the number of each line of spokes (10), the area of a magnetic pole, the intensity of a magnetic field and the length of the spoke (10) are properly chosen, and the engine having the required power can be designed, thus making contribution to opening up new power source. The principle of the action of the engine is that repulsion force is generated between the like magnetic poles which are the permanent magnet (1) and the electromagnet (2), component force which is vertical to the radial direction of the spoke is generated when the repulsion force is transmitted to the inclined plane at the end of the spoke (10) used for fixing the permanent magnet (1), and moment is formed; while, the same moment with opposite direction is generated by another spoke (10) which is symmetrical with the spoke (10) along the radial direction; the two moments form torque force to lead the straight shaft (5) to rotate.

An electric motor has a stator and a roto. The stator (1) comprises an annular armature (5) having a plurality of poles (7) evenly spaced about the inner circumferential surface of the armature (5) and directed towards a central longitudinal axis defined by the rotor shaft. A pair of firing/accumulator circuits (14,16) are connected in common and in series with respective sets of coils wound about the stator poles. The circuits are switched into and out of contact with their respective coil sets according to the position of the rotor with respect to the stator via position sensing elements which operate switches in the accumulator circuits. In an alternative embodiment firing and accumulation is effected using commutators and electrolytic capacitors (ECP, ECN). The motor is adapted to retrieve breakdown energy of the magnetic fields to realise a more efficient motor.

The present invention provides an energy-saving electric motor to solve the problems of serious waste of magnetic force in the prior electric motor. An inner rotor made of the material having no magnetoconductivity, a permanent-magnet equally spaced on the circle, and a magnetizer positioned in the center of two adjacent permanent-magnets are provided in the present invention; two or more rotors made of the material having magnetoconductivity are distributed on a same circle of the external of the inner rotor, and said rotors that near the axes of the inner rotor is arc shaped, and the distances from the two endpoints to the axes of the inner rotor are different, wherein, the end that closer to the axes is provided with an electromagnet, and the electromagnets of any two stators are not adjacent. The energy-saving electric motor provided in the present invention has took full use of the function of magnetic force comparing the prior art, and the magnetic force needed in the rotating of the rotators is reduced on the premise of not adding equipment. As a result, the energy sources are saved and the efficiency of the electric motor is improved.