Abstract: The invention proposes a new motor with separated permanent magnet torque and reluctance torque. Meanwhile, the optimal efficiency control method for this motor is proposed. This invention belongs to the field of motor and its drive system. The proposed motor includes 3 stators and 1 rotor (composed of 2 axial rotors and 1 radial rotor), the radial stator employs distributed winding, the axial stator adopts concentrated winding. The distributed winding and the radial reluctance rotor structure contribute to higher reluctance torque, while the concentrated winding and the surface mount permanent magnet structure offer higher permanent magnet torque. In the view of the magnetic circuit, the axial magnetic circuit generates the permanent magnet torque, and the radial magnetic circuit generates the reluctance torque. By using the decoupling of axial and radial magnetic circuits, the separation and the independent control of the permanent magnet torque and the reluctance torque are realized.

Abstract: Disclosed is a double-stator linear vernier permanent magnet (DS-LVPM) motor and method to increase the magnetic field modulation effect. The motor contains a primary, and first and second secondaries on both sides of the primary, spaced by an air gap. The motor secondary includes modulation teeth. The primary is bilaterally symmetrical, and permanent magnets (PM) are embedded in the yoke of the primary core elements. The design solves the inherent problem of flux leakage at the end of PMs for conventional VPM motors, so as to improve utilization of PMs, thereby increasing thrust density of the motors. Additionally, the motor secondaries are laminated by silicon steel sheet, which saves PM material and significantly reduces cost for linear long stroke applications. By adjusting PM structure parameters, the design can use finite element method (FFM) to calculate repeatedly to get PM structure parameters corresponding to maximum electromotive force (EMF).

Abstract: Disclosed are a ferrite catalyst and preparation methods thereof. The catalyst is provided with a formula below, wherein A is Mg atom, Zn atom or a mixture of both atoms at any ratio; D is one or more atoms selected from the group consisting of Ni, Co, W, Mn, Ca, Mo or V atom; Z is a catalyst carrier, which is one or more selected from the group consisting of calcium phosphate, calcium dihydrogen phosphate, aluminum phosphate, aluminum dihydrogen phosphate, ferric phosphate, magnesium phosphate, zinc phosphate, Mg—Al hydrotalcite, calcium carbonate, magnesium carbonate; a=0.01-0.6; b=0-0.30; c is a number balancing each valence; x, y represent the amounts of principal catalyst and carrier Z respectively, wherein the weight ratio y/x=0.5:1-7:1.

Abstract: Disclosed are a catalyst and preparation method and use thereof. The catalyst has a constitution represented as the formula below, wherein, D represents at least one element selected from the group consisting of copper, magnesium, manganese, stibium and zinc; E represents at least one element selected from the group consisting of tungsten, silicon, nickel, palladium, ferrum and plumbum; Z is selected from the group consisting of SiC, MoO3, WO3, TiO2 and ZrO2; y/x=11.1-50:100; a=0.1-3; b=0.01-5; c=0.01-5; d=0.01-3; e=0.01-2; f is the proportion of oxygen atom balancing the valence. The method comprises: (i) formulating Solution A with molybdenum, phosphorus, and vanadium compounds; formulating Solution B with dissolve potassium compound and a D-containing compound; formulating Solution C with an E-containing compound; (ii) mix Solutions A, B and C under a temperature of ?5-10° C.

Abstract: Disclosed are a catalyst and preparation method and use thereof. The catalyst has a constitution represented as the formula below, wherein, D represents at least one element selected from the group consisting of copper, magnesium, manganese, stibium and zinc; E represents at least one element selected from the group consisting of tungsten, silicon, nickel, palladium, ferrum and plumbum; Z is selected from the group consisting of SiC, MoO3, WO3, TiO2 and ZrO2; y/x=11.1-50:100; a=0.1-3; b=0.01-5; c=0.01-5; d=0.01-3; e=0.01-2; f is the proportion of oxygen atom balancing the valence. The method comprises: (i) formulating Solution A with molybdenum, phosphorus, and vanadium compounds; formulating Solution B with dissolve potassium compound and a D-containing compound; formulating Solution C with an E-containing compound; (ii) mix Solutions A, B and C under a temperature of ?5-10° C.

Abstract: Disclosed are a ferrite catalyst and preparation methods thereof. The catalyst is provided with a formula below, wherein A is Mg atom, Zn atom or a mixture of both atoms at any ratio; D is one or more atoms selected from the group consisting of Ni, Co, W, Mn, Ca, Mo or V atom; Z is a catalyst carrier, which is one or more selected from the group consisting of calcium phosphate, calcium dihydrogen phosphate, aluminium phosphate, aluminium dihydrogen phosphate, ferric phosphate, magnesium phosphate, zinc phosphate, Mg—Al hydrotalcite, calcium carbonate, magnesium carbonate; a=0.01-0.6; b=0-0.30; c is a number balancing each valence; x, y represent the amounts of principal catalyst and carrier Z respectively, wherein the weight ratio y/x=0.5:1-7:1.