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

The invention relates to a composite-structure bearingless switched reluctance motor and a control method thereof and belongs to the field of bearingless switched reluctance motors and control methods thereof. A torque stator and a levitation stator are axially stacked to form a stator; a winding is wound on teeth of the stator and passes the torque stator and the levitation stator, and the winding is wound in a central winding manner; a rotor comprises a torque rotor and a levitation rotor, the torque rotor and the levitation rotor are axially stacked in the stator, the torque rotor is located below the torque stator, the torque stator and the torque rotor are equal in axial length, and the levitation stator corresponds to the levitation rotor while the levitation stator and the levitation rotor are equal in axial length; the levitation stator is in a pole shoe structure, and the polar arc angle of the levitation stator is larger than that of the torque stator. Levitation and torque decoupled control is achieved; the control method is simple; radial bearing force is large; the motor is fine in levitating performance. Levitation control is achieved by minimum inductance zone; the levitating current has low effect on torque current, and interphase coupling effect is low.

The invention discloses bearing-free switch reluctance motor having an axial-direction parallel hybrid structure and a control method of said motor. A motor stator is composed of a reluctance motor stator and a magnetic bearing stator. A rotor is composed of a salient pole rotor and a cylinder rotor. The windings are composed of torque windings and suspension windings. The torque windings are composed of reluctance motor windings and wide-tooth windings and the number of the torque windings is identical to phase number m. The suspension windings are two and are arranged in the radial direction. The magnetic bearing stator is composed of four E-shaped structures and the width of each middle tooth is twice of the rest. According to the invention, suspension current is calculated according to a suspension force direction. Current of the torque windings and switching-on and switching-off angles of a power circuit are controlled separately and rotation speed and torque are controlled in real time. Current of the two suspension windings is controlled separately, suspension forces are regulated in real time and mutual decoupling is realized in rotation and suspension. According to the invention, the quantity of control variables is small; suspension control is simple; and a power converter of a suspension system is low in cost.

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 12/4 pole single winding bearingless switch reluctance motor and a control method thereof. The motor comprises a stator with 12 gear poles and a rotor with 4 gear poles; each pole of the stator winds a set of excitation windings; the rotor winds no winding; the rotor gear is wider than the stator gear by 30 degrees to enable each inductance to have a maximum induction flat-top area with 1/3 period. When the motor is in motor-driven operation, if the two phases in an inductance rising area and an inductance flat-top area are communicated simultaneously, the phase in the inductance rising area can produce a torque, and the phase in the inductance flat-top area can produce a suspension force; when the motor is in motor-driven operation, if only the phase in the inductance flat-top area is communicated, four windings of the phase are individually controlled to produce the suspension force and to provide excitation for the electricity generation stage, and later to generate electricity in an inductance drop area with follow current. The method controls the suspension force and the torque regionally, realizes the decoupling of the suspension force and the torque, simplifies the control algorithm, improves the radial bearing capacity and the high-speed adaptability of the motor, has generality and popularization in structure, and enables the field of the bearingless switch reluctance motor to gain a new development.

The invention provides a permanent-magnet biased hybrid magnetic bearing switch reluctance motor. A torque stator and a suspension force stator of the motor are axially superposed, and a torque rotor and a suspension force rotor of the motor are axially superposed; each of the torque stator and the suspension force stator both is of a salient pole structure and provided with twelve teeth; the torque rotor is of the salient pole structure and provided with eight teeth, while the suspension force rotor is of a cylindrical structure; windings, twelve in total, are wound around a stator tooth formed by the torque stator and the suspension force stator; an annularly magnetized permanent magnet is placed on each of twelve stator yokes, or a radially magnetized permanent magnet is placed on each of twelve suspension force stator teeth. The motor is characterized in that decoupling of torque and suspension force is realized structurally and convenient control is achieved, permanent magnets are used for providing biased magnetic flux and large radial bearing capacity is realized, and the influence of motional electromotive force on current chopping control is eliminated, and good current control effect and good high speed adaptability are achieved.

The invention provides a composite structure duplex winding maglev switched reluctance motor which comprises a reluctance motor stator, a reluctance motor rotor, a conical magnetic bearing stator, a conical magnetic bearing rotor, torque windings, suspension force windings and a rotating shaft. The reluctance motor stator is of a salient pole structure, the conical magnetic bearing stator is of a conical salient pole structure, and the reluctance motor stator and the conical magnetic bearing stator are each provided with twelve teeth. The reluctance motor stator and the conical magnetic bearing stator are placed in a serial mode in the axial direction, and a gap is reserved between the reluctance motor stator and the conical magnetic bearing stator. The reluctance motor rotor is of an eight-pole structure, the conical magnetic bearing rotor is of a conical cylinder structure, and the reluctance motor rotor and the conical magnetic bearing rotor are arranged on the rotating shaft in a sleeving mode. The number of the torque windings and the number of the suspension force windings are both twelve, each torque winding is wound above the reluctance motor stator and the conical magnetic bearing stator at the same circumferential position, and each suspension force winding is wound on the conical magnetic bearing stator. The composite structure duplex winding maglev switched reluctance motor structurally achieves decoupling of the torque and the suspension force, and radial baring capacity is large; the influence of motional electromotive force on control over current chopped waves is eliminated, the real-time control effect of currents is good, high-speed adaptability is high, radial and axial suspending power is achieved, and the integration level is high.

The invention discloses a five-degree-of-freedom co-excited bearing-less switched reluctance motor system and a control method. The system is composed of a switch reluctance motor, a hybrid magnetic bearing and a radial magnetic bearing, wherein bias windings of the two bearings and an m-phase armature winding of the switch reluctance motor share the same set of power converter; with the adoptionof a co-excited manner, biased magnetic flux is generated in the two bearings when torque is generated in the switch reluctance motor; the m-phase armature winding adopts the traditional switch reluctance drive mode; and the current of the bias winding is only related to working conditions of the switch reluctance motor, and no control is performed. In addition, current of five suspending windingsis reasonably controlled by combining with the current of the bias winding collected in real time, so that five-degree-of-freedom suspension operation can be realized. According to the system disclosed by the invention, suspension force is decoupled, the suspension force and the torque are also decoupled, the control variable is less, the suspension control is simple, the integration level is high, the reliability is high, no permanent magnet exists in the system, the environmental suitability is high, and the system has unique advantages in high-speed or ultra-high-speed application occasions.

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 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 invention discloses a hybrid electromagnetic magnetic bearing switch reluctance motor. The hybrid electromagnetic magnetic bearing switch reluctance motor is composed of a motor stator, a reluctance motor rotor, a magnetic bearing stator, 12 torque windings, 12 suspension force windings and a rotating shaft; each of the reluctance motor stator and the magnetic bearing stator comprises 12 poles, the reluctance motor stator and the magnetic bearing stator are arranged in series in the axial direction, and a gap is formed there-between; the reluctance motor rotor comprises 8 poles, the magnetic bearing rotor is cylindrical, both the reluctance motor rotor and the magnetic bearing rotor sleeve the rotating shaft, and a gap which is equal to the distance between the magnetic bearing stator and the reluctance motor rotor is formed between the reluctance motor rotor and the magnetic bearing rotor; each torque winding winds a reluctance motor stator tooth and a magnetic bearing stator tooth in the same circumferential position, and each suspension force winding winds a magnetic bearing stator tooth. By means of the structure, the hybrid electromagnetic magnetic bearing switch reluctance motor realizes to decouple the torque and suspension force, and the radial bearing force is large; the influence of motion electromotive force on the suspension current chopping control is avoided, the real-time control effect of the current is good, and the high-speed adaptability is strong.

The invention discloses an electromagnetic bearing switch magnetic resistance motor system and a control method. The motor system comprises a switch magnetic resistance motor, a three-DOF magnetic bearing and a radial magnetic bearing. Bias windings of the two magnetic bearings are connected in series and are then connected with DC buses of asymmetric half-bridge power converters of m phase armature windings of a switch magnetic resistance motor through four diodes, the m phase armature windings employ a traditional switch magnetic resistance driving mode, under the rectification effect of thefour diodes, a continuous invariant current is generated in a bias winding to provide bias magnetic flux for the two magnetic bearings; through reasonable control on currents of the five suspension windings, five-DOF suspension operation can be realized, mutual decoupling among five suspension forces is carried out, and decoupling between the suspension forces and torques is carried out. The motor system is advantaged in that the integration degree is high, the dynamo-electric energy conversion utilization rate is high, control variables are in a small quantity, suspension control is simple,reliability is high, the motor system has no permanent magnet, so working environment adaptability is strong, and the motor system is especially suitable for high-speed or super-speed application occasions.

The invention discloses a mixed magnetic bearing dual-winding switch reluctance motor and a control method. The motor consists of a switch reluctance motor and two radial magnetic bearings; a magnetic bearing stator is formed by four E-shaped structures, and the middle tooth of each E-shaped structure is wound with a suspension winding; each tooth of the switch reluctance motor is wound with a bias winding and a reluctance motor winding separately; the bias winding transversely crosses two magnetic bearing stators and a switch reluctance motor stator while the reluctance motor winding only winds the reluctance motor stator; two windings are connected in series to form a torque winding string, and a three-phase torque winding can be formed; the torque control is the same as the control way of the conventional switch reluctance motor; the suspension force in two directions of each magnetic bearing is only related to the three-phase torque winding current and two suspension currents, and decoupling control of the torque and the suspension force can be realized; the motor and the control method disclosed by the invention are high in integration degree, less in control variables and simple in suspension control, and the suspension power converter is low in cost; and design of decoupling control of the torque and the suspension force can be realized.

The invention discloses a truncated-cone-shaped solid column type bearingless switched reluctance motor which comprises a first stator, a first rotor, a second stator, a second rotor and a truncated-cone-shaped solid column. Each tooth pole of the first stator and each tooth pole of the second stator are correspondingly sleeved with a first radial exciting winding and a second radial exciting winding which are independently controlled, and each tooth pole of the first stator and each tooth pole of the second stator are connected with an axial exciting winding in series; a conical outer chamferstructure is arranged on the axial inner sides of the two stators; the first rotor tooth pole and the second rotor tooth pole form a 15-degree rotating mechanical angle difference; the first rotor, the second rotor and the truncated cone-shaped solid cylinder share one rotating shaft; an air gap length exists between the truncated cone-shaped solid cylinder and the outer chamfers of the two stators; when the first radial excitation winding and the second radial excitation winding conduct current, the first rotor and the second rotor provide radial suspension force, the axial excitation windings are conducted at the same time, the magnetic flux density in the stator tooth poles is controlled, the solid cylinder obtains a set of magnetic pull force, axial components in the set of magnetic pull force are extracted to achieve axial suspension control, and finally five-degree-of-freedom suspension is achieved.