车用机电复合传动广义主动阻尼同步注入原理和关键技术

The spreading of hybrid and electric vehicles promotes profound research on automotive electrified mechanical transmissions. By constructing an interdisciplinary research group, this study focuses on torsional vibration suppression of such physical systems...Oriented by technical requirements of torsional vibration suppression, this study combines interdisciplinary efforts both of mechanical transmissions and motor control technology. We are expecting breakthroughs in following topics:.(1) To reveal the influence mechanism of mechanical - electromagnetic coupled multi-physics discipline on torsional vibration. To explore the theoretical feasibility using electric drive system simultaneously as actuators and sensors for torsional vibration suppression. To study the fundamental theory of "generalized active damping" control, i.e. integrated emulation of virtual stiffness, virtual inertia and virtual damping to suppress torsional vibration. .(2) Optimization the under-damped, mode-switching transient response characters of such physical systems. States estimation of such high-order nonlinear electromechanical systems. Study on algorithm stability of virtual stiffness emulation. Distributed parameter modeling and precise torque control of PMSM. And other key technical issues. Combined with experimental verification, to explore the feasibility and basic theory of "spatial synchronized" injection of active damping...The results of this research shall be applicable not only for automotive electric drive systems but also for non-automotive electric-mechanical coupled drive systems.

伴随混合动力和电动汽车的产业化，车用机电复合传动技术研究不断深入，本研究聚焦此类系统的扭振抑制问题，以复合传动系统扭振抑制需求为引领，探索通过机械传动与电机控制技术领域的深度学科交叉，取得该技术领域的创新性突破，旨在.（1）揭示其机械-电磁多物理域耦合对扭振的影响机理，探索将电机完成用于车辆驱动的同时用于扭振抑制和传感部件，探究以虚拟刚度、虚拟惯量和虚拟阻尼综合模拟为基本特征的“广义主动阻尼”控制的理论基础；.（2）关注车用机电复合传动系统欠阻尼、模式切换频繁等技术难点，解决高阶非线性机电状态联合估计、等效刚度模拟算法稳定性、永磁同步电机分布参数建模和转矩精确控制等关键问题，结合试验验证，探究主动阻尼的“空间同步”注入理论和算法实现可行性。.本研究成果对非车用机电复合传动技术也具有借鉴和推广价值。

本项目聚焦电动汽车行业快速发展热点问题，针对车用机电复合传动扭转振动主动抑制命题开展以下研究工作：.（1）充分利用电驱动系统状态精确可控可测的特性，揭示机械和电磁多物理域动力学耦合对扭转振动的影响机理和数学表征；将电机同时用作车辆驱动和扭振抑制，研究以机电状态联合估计和等效刚度模拟为基本特征的主动阻尼注入理论基础。.（2）基于有限元数据建立了车用同步电机高精度解析模型，即分布参数模型，该模型考虑齿槽引起的空间谐波和磁饱和特性。.（3）针对建立的分布参数模型，深入研究电机转矩脉动影响机理和电流谐波精确控制方法，以及实现转矩脉动抑制以及转矩动态精确控制。.研究工作发表专著1本，发表EI/SCI检索论文10篇，国际会议论文宣读3次。分布参数建模方法有关成果已经部分推广应用。.研究工作所提出的车用电机分布参数建模方法在理论上均具有较高的学术价值。近年来随着车用电机高速化和第三代功率半导体器件的应用，电机控制的宽频化需求越来越迫切。宽频化的本质特点是不仅对电机的基频参量进行控制，同时要对电机电流和磁场的高次谐波也进行控制。而分布参数模型恰恰为电机的宽频控制奠定了完整的理论基础和控制架构。该方法从磁共能重构出发描述电机的机电能量转换过程，引入电机转子空间位置坐标，有效表征了磁链/转矩随转子自由度的变化规律，是对现有电机模型理论的有效补充，对于解决车用电机工程实践中转矩脉动抑制、电流纹波控制、电流高次谐波注入等问题提供了理论基础。