Then it starts from the view of combining the magnetic circuit and circuit, analyzing the integration of the array planar inductor and inductor (APIT-L+L), and the theory of integrated magnetic on the array planar inductor and transformer (APIM-L+T), it introduces many integrated project of APIM-L+L and APIM-L+T, building the equivalent circuit and verifying the feasibility of the APIM by the simulation and experiment research .
The 3-D FEM of the magnetic bearing is studied to validate the validity of calculation of magnetic circuits, which analyze the distribution and action of magnetic fields under different conditions. And then the distributions of radial air-gap flux density and the force-current linear control characteristics are given.
Secondly, this thesis deduces the iterative formula of the magnetic conductance, simulates the magnetic flux lines of every different position by ANSYS, makes supposition and predigestion of the magnetic path, then analyzes the magnetic flux lines for eight special positions which are θ_a、 θ_u、 θ_1、 θ_(hr) θ_(10)、 θ_(20)、 θ_(30)、 θ_(40).
Four types of practical pole-changing patterns of salient pole Synchronous machines are summerized, and the methods of calculating the wave form coefficients and the pole arc flux coefficients are studied in view of branched magnetic path,
Based on introduction on the main classification of direct drive motors, the paper reviews the research status on direct drive motors and advances the novel scheme and detail structure of the serial magnet circuit direct drive motor.
This paper studies the design features of permanent magnet AC servomotor with two kinds of different operation principles ,and points out the difference magnet circuit calculating from traditional motor.
This paper makes some researches on the armature effect compensation theoryand experiment of permanent magnet synchronous'motor through the design of the rotor construction and rare-earth material,and estabilishes a speed control systemcombining control strategy with motor design of rare-earth permanent magnetsynchronous motor with asymmetrical rotor magnet circuit.
The conventional Magnet circuit Method transfer the field in electrical machine into magnetic circuit to analyze and calculate the parameters and performance of electrical machine and the FEM splits the magnetic field into many elements according to the different flux distribution in the machine.
Coercive forces of the composite samples with different contributions of harder materials and different orientations of plates with respect to one another in open and closed magnetic circuits have been calculated.
The effect of preliminary magnetization of articles in closed and open magnetic circuits on the result of measuring the residual magnetization of specimens in an open magnetic circuit has been studied experimentally.
In addition to its main function (creation of an insulating layer between plates of magnetic circuits), such coatings protect metal surfaces against corrosion and may affect magnetic properties of steel.
Comparison of engineering methods for calculation of magnetic circuits and fields of electromagnets
Advantages and disadvantages of the methods for calculation of magnetic circuits and fields of electromagnets are discussed.