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题名	十五相感应电机磁场分析及驱动技术研究; 十五相感应电机磁场分析及驱动技术研究
作者	1王又珑,电工研究所
学位类别	博士
答辩日期	2009-06-01
授予单位	中国科学院电工研究所
导师	1温旭辉,电工研究所
关键词	多相电机 十五相感应电机 广义Park变换 转子磁场定向控制 多相SVPWM Multi-phase Machine 15-phase Induction Machine Generalized Park Transformation Rotor Field Orientated Control Multi-phase SVPWM
其他题名	十五相感应电机磁场分析及驱动技术研究
中文摘要	随着电力电子技术、计算机技术和现代控制理论的发展，由逆变器供电的电机驱动系统的相数不再受到供电相数的限制。在大功率、高可靠性和低直流供电电压应用场合，多相电机驱动系统比传统三相电机驱动系统更具优势，因此多相电机驱动系统特别适合用于船舶电力推进、潜艇动力系统、轨道交通、核电站供水、战车驱动和航空航天等场合。其相关技术的研究也开辟了电气驱动技术的新研究领域。 本文在多相感应电机的理论、应用和实践等方面进行了研究，主要工作如下： 基于绕组函数理论，对电流时间谐波和绕组空间谐波相互作用下的对称多相绕组的定子磁势的时间-空间谐波分布情况进行了定量分析。提出了在较高相数（12相及以上）时，采用集中绕组或分布绕组对电机的绕组系数影响有限的观点，并提出了多相电机相数和绕组结构的选用依据。采用有限元分析方法进行了验证。 对15相感应电机的多维正交空间数学模型开展研究，该模型将电磁场基波分量和谐波分量在电机中的作用统一起来，概括了多相电机驱动系统中磁链、电流和电压等物理量的基波分量和谐波分量的控制策略，为系统控制打下基础。同时对15相感应电机的转子磁场定向控制系统进行了仿真，验证了其有效性。 研究了在电压源逆变器供电条件下，多相电机的基波和谐波平面中电压空间矢量的分布特征。提出了一种用于多相电机驱动系统定子电流谐波控制的新型SVPWM调制原理和实现方法，该调制方法在有效控制定子电流谐波的同时，大幅提高了直流母线电压利用率，并通过试验验证了该方法的有效性。 对高相数的电机驱动控制系统的软硬件实现方面进行了探索，提出了一种低成本的，定点DSP与CPLD相结合的多相电机数字控制系统的方案。 此外，建立了基于Matlab/Simulink的多相电机驱动系统的仿真平台和试验平台。改制了一台75kW的30相带15相感应电机，设计并制造了100kVA的15相电机驱动控制器，对主要研究工作进行了试验研究，完成了试验台架设计与搭建、控制软件编写和实验等工作。实验验证了本文中理论分析的正确性和方法的有效性。 With the adventure of power electronics, computer technologies and modern control theories, the inverter-fed machine drives remove the limitation on the number of power supplies and machines phases. Multi-phase machine drives show several advantages over three-phase drives, especially in the applications of high power, high reliability, and low DC link voltage. Therefore, multi-phase drives are very suitable for ship and submarine propulsion, electric traction, water supply of nuclear power station, military vehicle, aerospace applications and other high power applications. Multi-phase drives expand the research field of electrical drives. This work focuses on the theoretic and applications of multi-phase induction machine drives. The organization is as follows. In this work, the MMF’s time-space harmonics distribution of symmetrical multi-phase windings is analyzed quantitatively based on the Winding Function theory. The results demonstrate that the MMF’s harmonics distribution is affected by both stator current harmonics and winding space distribution. It also has been shown that with the phase number increased, the winding distribution has little effect on the winding factor, especially when the phase number is higher than 12. Based on the analysis above, the basis of the selection of phase number and winding structure is presented. The conclusions are verified by finite element methods. A novel multi-dimensional orthogonal-subspaces model for 15-phase induction machines which can be used in rotor Field Orientated Control is presented. In this model, the fundamental and harmonic components of electromagnetic field perform the same role in electromechanical energy conversion. By using this model, a unified control scheme for both the fundamental component and the harmonic components in multi-phase drives is obtained. Simulations are carried out. The results prove that the algorithm can work effectively as analyses. Moreover, the distributing characteristics of voltage space vectors in fundamental component space and harmonic components spaces of VSI fed multi-phase induction machines are analyzed. A novel space vector PWM control strategy is presented, which can eliminate some specifical harmonics inherently and improves the DC link voltage utilization ratio. Comparisons are made between the results obtained from the proposed approach, and those from some other SVPWM techniques motioned in this paper. Experiments have been conducted to verify the validity of the proposed control strategy. The software and hardware implementations of high phase order multi-phase machine drive systems are also studied. A low cost, fix-point DSP and CPLD based multi-phase machine digital control system is developed. For further investigation, a simulation platform for multi-phase drive system is implemented based on Matlab/Simulink. A 75 kilowatts 15-phase induction machine which has 30 phase belts is reconstructed. A 100kVA 15-phase machine controller is designed and manufactured. Experiments have been conducted to show the system operation and verify the validity of the conclusions of theoretical studies.
语种	中文
公开日期	2010-10-18
页码	175
分类号	TM1;TM921
内容类型	学位论文
源URL	[http://ir.iee.ac.cn/handle/311042/6828]
专题	电工研究所_其他部门_其他部门_博士学位论文
推荐引用方式 GB/T 7714	1王又珑,电工研究所. 十五相感应电机磁场分析及驱动技术研究, 十五相感应电机磁场分析及驱动技术研究[D]. 中国科学院电工研究所. 2009.

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