permanent flux 中文意思是什麼
permanent flux
解釋
永久磁通-
The thesis is devoted to exploiting a permanent magnet synchronous machine ( pmsm ) for the parallel hybrid electric vehicle ( phev ). three parts are included as follows : at first, in the electromotor state, the current control strategies of pmsm are determined. giving the elementary method for solving the contradiction between enhancing the pmsm ' s flux - weakening capability in the electromotor state and reducing the pmsm ' s connatural adjustment ratio in the dynamotor state
本課題的研究工作主要圍繞開發一臺並聯式混合動力電動汽車（ phev ）用永磁同步電機（ pmsm ）展開，所作的工作主要包括以下幾個部分：首先，確立了phev用pmsm電動機運行狀態時的電流控制策略，針對pmsm在電動機運行狀態時提高弱磁擴速能力和在發電機運行狀態時減小固有電壓調整率的相互矛盾，提出了初步的解決方法。 -
Permanent magnet synchronous motor ( pmsm ) drived by triphase sinusoidal current is research object in this paper. its mathematics models in several coordinate are set up, controlling principles of flux linkage and torque are discussed under dtc and the block diagram of pmsm with dtc is presented
本文以三相正弦波驅動的永磁同步電機（ pmsm ）為研究對象，建立了其在不同坐標系下的數學模型，並深入探討直接轉矩控制中永磁同步電機的磁鏈和轉矩的控制思想，給出控制方案。 -
The influence of separating magnetic flux method of rotor with u ' s and tangential permanent magnet to the pole - to - pole leakage factor is analyzed by finite element method ( fem ), and given the rule of design
通過對pmsm進行電磁場求解，分析了u型結構和切向結構轉子磁路結構的隔磁措施對電機極間漏磁系數的影響，提出了設計準則。 -
The subject of this thesis is to study ironless moving coil linear permanent magnet synchronous motor and the major works in this thesis are summarized as follows : 1 ) two analytical formulas are derived by concentrated current method and distributed current method to determine the magnetic field due to pm, based on the current model of pm. besides, two method ( magnetic charge method and solution by laplace equation method ) are also introduced with comparing their advantages and disadvantages. then the effects of the motor parameters on the flux distribution are discussed
本文對空芯動圈式直線同步電動機進行了深入細致的研究，內容包括： （ 1 ）採用電流模型推導出兩種計算永磁磁極二維氣隙磁場的解析公式（集中電流法、分佈電流法） ，同時介紹了兩種永磁電機氣隙磁場計算方法（磁荷法，直接求解拉氏方程法） ，分析各種方法的優缺點，討論電機參數對氣隙磁密的影響； （ 2 ）介紹了單層同心繞組的布置方式，根據安培定律推導出空芯動圈式直線永磁同步電動機的靜推力計算公式，分析靜態力?位移特性； （ 3 ）建立空芯動圈式直線永磁同步電動機動態模擬模型，模擬不同驅動方式下電動機起動、穩態運行時電磁力、速度、位移的變化情況。 -
Testing of permanent magnets ; determination of the magnetic flux values in the working range
永久磁鐵的檢驗.工作范圍內磁通量值的測定 -
The system uses the permanent magnet synchronous machine as the driver motor based on the idea of polygonal flux linkage locus and the permanent magnet brush - less motor is as the momentum balance motor by means of speed and current loop in order to track driver motor precisely and rapidly. the harmonious control of driver motor and balance motor is realized by making full use of the dsp hardware resource and complicated programmable logic device. the software design is composed of c and assembly language to realize motor control arithmetic of polygonal flux linkage locus
衛星天線伺服控制系統以正弦波永磁同步電機作為驅動電機，採用多邊形磁鏈軌跡法（電壓空間矢量法）的控制策略；動量平衡電機採用永磁無刷直流電機，通過電流環、速度環達到快速、精確跟蹤驅動電機的目的，確保了衛星姿態恆定；設計方案中充分利用了dsp硬體資源和復雜邏輯陣列實現了驅動電機和平衡電機的協調控制，並通過c語言和匯編語言的混合編程實現了電機的多邊形磁鏈軌跡控制演算法。 -
Meanwhile, the composition of the motor system is also given while the motor works as a starter. a mathematics model for doubly salient permanent magnet motor is constructed from the view of conversation of energy. on the base of linear disposal for permanent magnetic flux, some control strategies are put forward such as control mode i, angular advance control mode and control mode ii
首先介紹了所研究的雙凸極電機結構以及電動運行時系統構成情況，從能量守恆的角度構建了永磁式雙凸極電機的數學模型，在永磁磁鏈線性化處理的基礎上提出了控制方式一、角度提前方式、控制方式二等電動運行方式，並建立了各電動運行方式的模態方程，是對雙凸極電機進行進一步研究的基礎。 -
Analysis of 3d electromagnetic field in transverse flux permanent magnet motor
橫向磁通永磁電機的三維電磁場分析 -
Pinning centers, that are some abnormal regions in type ii superconductors, will hinder the flux motion. certain of remnant magnetism in a superconductor will make it to a superconducting permanent magnet
非理想第類超導體內部存在的異常區，即釘扎中心，會對磁通線的運動產生阻礙作用，使超導體具有一定的剩磁而成為超導永磁體。 -
The hybrid claw - pole alternators have magnetic fields contributed by permanent magnet as well as excitation coil, and the advantages are high efficiency, have good low - speed characteristics, excitation adjustable and high flux densities. for the reason of complex claw - pole construction and 3 - d magnetic field distributions, there is lack of the research on the alternators
混合勵磁爪極發電機是由永磁體和勵磁線圈共同產生電機磁場的一種發電機，與傳統的爪極發電機相比有高效、低速性能好和集線圈勵磁的電壓調節性能與高磁通密度的優點，具有很好的研究前景和使用價值。 -
A new bearingless induction motor system with five degrees of freedom is developed including a bearingless induction motor and a permanent magnet biased axial - radial magnetic bearing. the control strategy of bearingless induction motor based on air - gap flux orientation is introduced, and the decentralization pid control is used to maintain equal air in the five degrees of freedom. the digital controller guarantees rotor suspension steadily, and the speed of rotor reaches 3000 rpm
闡述了無軸承異步電機的氣隙磁場定向控制策略，採用該非線性控制方法能使無軸承異步電機解耦成轉矩子系統和磁懸浮徑向力子系統，從而可以採用經典pid對這兩個獨立的子系統進行控制，首次實現了系統在0 3000rpm轉速范圍內的穩定懸浮。 -
This paper discussed two - pole permanent magnetic spherical motor, in which two poles of rotor are permanent magnets. the electro - magnetic relationship is analyzed and the electro - magnetic model has been developed, which includes voltage equations, flux linkage equations, and electro - magnetic torque expressions
本文研究了雙極永磁型球形電動機的電磁關系，將不對稱繞組折算為對稱繞組，建立了電機的電磁模型：電壓方程式、磁鏈方程式和電磁轉矩方程式。 -
Due to 12 / 8 poles doubly salient permanent magnet motor, planar finite element method ( fea ) is applied to analyze the magnetic field inside the motor. and a series of static characteristics are investigated, such as field distribution, air gap magnetic density, field flux, inductance, static torque
針對12 / 8極永磁式雙凸極電機，採用二維平面有限元法對電機內磁場進行分析計算，研究了電機磁場分佈、氣隙磁密、繞組磁鏈、繞組電感、靜態轉矩等一系列電機靜態特性。 -
In order to solve the problem of direct torque control ( dtc ) for permanent magnet synchronous motor ( pmsm ) related to the flux and the torque ripple and the uncertainty of switching frequency, a method which shorten the voltage - vector - function - time by svm ( space vector modulation ) is developed, and in order to improve the system performance, the stator flux linkage sectors and vectors are subdivided
摘要為了解決永磁同步電機傳統直接轉矩控制低速時磁鏈和轉矩脈動大的問題，提出了1種用空間矢量調制（ svm ）實現減小電壓矢量在1個控制周期中的作用時間的直接轉矩控制方法;為進一步提高系統性能，對磁鏈扇區和電壓矢量進行了細分。 -
This paper presents the working principles of single - phase permanent - magnet stepping motor this motors main characteristics are dissymmetry rotor and a winding on permanent - magnet. the winding on permanent - magenet is used for countervailing the flux of permanent - magnet. its very important during motor working
詳細介紹了一種新型單相單拍運行的永磁步進電機的運行原理，該電機主要特點為不對稱轉子及永磁磁極上附加一產生抵銷永磁磁勢的繞組，在單相單拍運行時發揮重要作用。 -
Nh4c and o - p concentrations were 35 and 7 times higher, respectively, in the pore water than in the overlying marsh, suggesting a permanent flux of nutrients from the sediments
孔隙水中的nh4c和o - p濃度比上層濕地水的濃度分別高出35倍和7倍，這表明營養物質穩定地從沉澱物中流出。 -
The process of design in this paper is : lto select the stator configuration of pmsm refer to asynchronous motors whose capacity is similar to pmsm ' s. 2. to research the no - load airgap flux distribution, so as to select the rotor configuration, which consists of some important parameters, such as the permanent magnet dimension and pole arc figuration. 3. to calculate the important parameters x ~ and xa
本文在電機設計過程中採用的步驟是：參考近似功率的異步電動機的定子結構，並做適當修改，以確定永磁同步電動機的定子結構；進行電機空載磁場的研究，確定包括永磁體的尺寸、極靴的與定子內圓相對表面的外形等關鍵參數在內的轉子結構；對于極為重要的電機參數x 。 -
As a branch of national high - technology research and development program of china, this dissertation is devoted to the study on the transverse flux permanent magnet synchronous machine ( tfpm ). in this paper, the analysis and design method is presented. based on the study on the structure techniques of tfpm, a tfpm with new structure is developed
作為國家高技術研究發展計劃的一部分，本文對橫向磁通永磁電機的一些共性關鍵技術問題進行了深入的研究，提出了橫向磁通永磁電機的分析及電磁計算方法，並通過對橫向磁通電機的結構和製造工藝的分析，提出了新型的工藝過程簡便的結構。 -
In this paper, the method of design for variable speed permanent magnet synchronous motors ( pmsm ), which are applied to the traction of elevators and driven by power converters, is discussed. by request of elevators, the conflguration, airgap flux distribution and parameters of motors are researched. an effective method of design is implemented, according to the result of research
=本文討論的是用於電梯驅動的變頻調速永磁同步電動機的設計。根據電梯驅動和變頻調速的要求，本文對電機的定轉子結構、氣隙磁場的分佈、各參數的合理選擇等多方面的情況進行了研究，從而確定了有效的實施方案。 -
At first, the interactions of hts permanent magnet and applied field are studied, that is the levitation force of ybco bulks over the ndfeb guideway and the influences of the applied field to the hts permanent magnet. secondly, the pulsed field magnetization properties of ybco bulks are studied. at last, the influence of the sample ' s thickness, shape as well as the density to the levitation force over the ndfeb guideway and the trapped flux of ybco bulk are studied
文中主要研究了高溫超導永磁體在外場下的受力狀況以及外場對其內部磁通量的影響、高溫超導ybco塊材在不同脈沖場下的俘獲磁通特性以及超導體塊材自身的厚度、形狀、密度等參數對其在外場下受到的懸浮力和俘獲磁通的影響。
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