33results about How to "High speed adaptability" patented technology

The invention relates to a bearingless switched reluctance motor with a composite rotor structure and belongs to the field of magnetic levitation switched reluctance motors of motors, a set of windings are wound on stator teeth of a stator; rotors consist of a torque rotor and a levitation force rotor; the torque rotor and the levitation force rotor are arranged in the stator in an axial superposition manner; the torque rotor is used for generating the torque; the levitation force rotor is used for generating a levitation force and part of torque. According to the bearingless switched reluctance motor provided by the invention, only one winding is wound on the stator teeth; and compared with the traditional dual-winding bearingless switched reluctance motor, the bearingless switched reluctance motor disclosed by the invention has the advantages that the structure is simple, the coil space factor is high, copper and silicon steel sheets are saved and the manufacturing cost of a motor can be reduced. In the structure, the levitation force and the torque are decoupled, a control method is simple and the levitation performance of the motor is good. The levitation control is realized by using a smallest inductance zone; the influence of levitation current on torque current is small; and the alternate coupling action is small. In addition, the bearingless switched reluctance motor has the characteristics of high utilization rate of the winding, high power density and strong high-speed adaptability.

The invention discloses a three-freedom-degree magnetic levitation switch reluctance motor of a 12 / 4 pole structure. One three-phase 12 / 4 pole radial magnetic field bearing-free switch reluctance motor and two three-phase 12 / 4 pole axial magnetic field bearing-free switch reluctance motors are integrated. The three-freedom-degree magnetic levitation switch reluctance motor of the 12 / 4 pole structure comprises a radial magnetic field motor stator core (1), a radial magnetic field motor rotor core (2), an axial magnetic field motor rotor core (3), a radial magnetic field motor winding (4), an axial magnetic field stator core (5) and an axial magnetic field motor winding (6). The functions of a bearing-free motor and the functions of an axial magnetic levitation bearing are integrated, integration is high, radial suspension force, axial suspension force and torque are completely decoupled on the structure, the control method is simple, the suspension performance is good, the torque pulsation is small, the power density is high, and the high-speed adaptability is strong.

The invention discloses a truncated conical solid cylinder bearingless switched reluctance motor, which comprises a first stator and a rotor, a second stator and a rotor, a truncated conical solid cylinder; each tooth pole of the first and second stators There are first and second radial excitation windings on the top, these windings are independently controlled, and the axial excitation windings are connected in series on each tooth pole of the first and second stators; there is a conical outer chamfer on the axial inner side of the two stators Structure; the tooth poles of the first and second rotors have a 15° rotation mechanical angle difference; the first and second rotors share a rotating shaft with the truncated conical solid cylinder, and the outer chamfers of the truncated conical solid cylinder and the two stators There is an air gap length between them, when the first and second radial field windings conduct current, the first and second rotors provide radial levitation force, and at the same time the axial field windings conduct to control the magnetic flux in the stator teeth Density, so that the solid cylinder obtains a set of magnetic pulling force, and extracts the axial component of this set of magnetic pulling force to realize axial levitation control, and finally realizes five-degree-of-freedom levitation.

The invention discloses a hybrid radial conical magnetic bearing switch reluctance machine and a control method. The machine comprises a switch reluctance machine, two radial magnetic bearings and two conical magnetic bearings, wherein one of the radial magnetic bearings and one of the conical magnetic bearings are arranged at one side of the switch reluctance machine, the other two bearings are arranged at the other side of the switch reluctance machine, bias windings of four magnetic bearings are connected in series with a winding of the switch reluctance machine to form an m-phase torque winding, torque control is the same as a traditional control mode of the switch reluctance machine, five directional suspension forces are only related to a current of the m-phase torque winding and a current of each directional suspension winding, the suspension forces are decoupled to one another, and the torque and the suspension forces can be in decoupling control. The machine and the control machine are high in integration, a few in control variable and simple in suspension control, and a suspension system power converter is low in cost.

The invention discloses a switch reluctance motor without bearings. The number of teeth of a suspension stator of the reluctance motor is four, the number of teeth of a torque stator is four times of a phase number m, the number of teeth of a rotor is integral times of four, four suspension stator teeth stretch out of a stator yoke of the rotor, then the phase number m teeth of the torque stator stretch out of each tooth of the suspension stator again, a torque winding winds on each tooth of the torque stator, a suspension winding winds on each tooth of the suspension stator, currents of the torque windings and the suspension windings are controlled respectively, and suspension force and torque are produced at the same time. According to the switch reluctance motor without the bearings, only one winding is arranged on the teeth of the torque stator and the teeth of the suspension stator respectively, relative to a traditional duplex winding switch reluctance motor without the bearings, the torque is not contacted with the suspension windings, a groove full rate is high, a utilization rate of the windings is high, the suspension force and torque force are completely decoupled structurally, a control method is simple, suspension performance of the motor is good, systematic cost is low, and high-speed adaptability is strong.

The invention discloses a four-degree-of-freedom composite structure bearingless switch reluctance machine and a controlling method thereof. The motor is composed of a switch reluctance machine and two radial magnetic bearings. Each magnetic bearing stator is formed by four E-type structures; one suspension winding and one armature winding wind around a middle tooth of each E-type structure; and one bias winding and one armature winding wind around two tooth windings. One armature winding winds around each tooth of the switch reluctance machine and crosses over the two magnetic bearing stators and a switch reluctance machine stator. An A-phase armature winding forms one phase; and B-phase and C-phase armature windings and bias windings are connected in series to form another two phases. A torque controlling way is identical with a traditional switch reluctance machine controlling way. The suspension force at a certain direction of each magnetic bearing is only related with a three-phase armature winding current and a suspension current at the direction; and the torque and the suspension force as well as the torque and the radial suspension force is in decoupling controlling. The suspension controlling becomes simple; and the outputs of the suspension forces are balanced and symmetric.

The present invention discloses a taper magnetic bearing switched reluctance motor and a control method thereof. The motor is composed of a switched reluctance motor and two taper magnetic bearings; the bias windings of the two taper magnetic bearings are connected in series with the winding of the switched reluctance motor to a form m-phase torque winding; two vertical suspension windings of each taper magnetic bearing are configured to control the suspension with two degrees of freedom, have four vertical degrees of freedom and are able to perform decoupling control; the axial suspension windings of the two taper magnetic bearings are connected in series to form an axial suspension winding for controlling the axial suspension; the motor is able to independently control the opening and closing angles of a torque winding current and power circuit to control the rotating speed and the torque in real time; and the motor is able to control five suspension winding currents to regulate the suspension forces in five directions so as to realize the suspension with five degrees of freedom. The taper magnetic bearing switched reluctance motor and the control method thereof are small in control variables, simple in suspension control and low in cost of a suspension system power converter.

The invention discloses a duplex-winding bearing-free switched reluctance motor of a composite structure. The motor comprises a motor stator, a motor rotor and motor windings. The motor stator is composed of a reluctance motor stator, a magnetic separation disc stator and a magnetic bearing stator. The motor rotor is composed of a reluctance motor rotor, a magnetic separation disc rotor and a magnetic bearing rotor. The magnetic bearing stator is of a [-shaped structure, and the magnetic bearing rotor is of a cylindrical structure. The reluctance motor stator and the reluctance motor rotor are both of a salient pole structure. The motor windings comprise the torque winding and the suspension force winding. The torque winding is wound on one tooth of a [-shaped iron core of the reluctance motor stator, one tooth of a [-shaped iron core of the magnetic separation disc stator and one tooth of a [-shaped iron core of the magnetic bearing stator. The suspension force winding is wound on the other tooth of the [-shaped iron core of the magnetic bearing stator. According to the duplex-winding bearing-free switched reluctance motor of the composite structure, the reluctance motor rotor generates torque, suspension force rotors generate suspension force, and decoupling of the torque and the suspension force is achieved structurally; motional electromotive force is zero in a suspension breakover interval, influences of the motional electromotive force on current chopped waves are eliminated, and the current real-time control effect is improved.