Design and control of a linear propulsion system for an elevator using linear switched reluctance motor drives
Design and control of a linear propulsion system for an elevator using linear switched reluctance motor drives
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DOI：
10.1109/tie.2007.911942
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发表时间：
2008-01
期刊：
影响因子：
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通讯作者：
H. S. Lim;R. Krishnan;N. Lobo
中科院分区：
文献类型：
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作者：
H. S. Lim;R. Krishnan;N. Lobo
提出并研究了一种用于升船机主推进的直线开关磁阻电机。为了实现上述目标，提出了一种新型的LSRM，其具有双定子和在它们之间的转换器，在转换器中没有背铁。提出的配置LSRM的设计，仿真和分析，并与传统的LSRM。研究了所需的LSRM推进子系统的数量，以使其重量最小化，并为此目的进行了优化研究。LSRM推进系统在电梯上的独特位置。选用六组非对称桥式变换器驱动所设计的LSRM，使其具有较高的容错能力。使用单相或多相激励产生推进力。为了减少力脉动，电梯中的主要要求，使用已知的力分布函数（FDF）之一的受控多相激励是可接受的解决方案。目前可用的FDFs能够减少力脉动，但不能满足峰值力命令，本文证明。因此，速度和位置控制甚至不再满足基本的性能要求。针对传统FDF存在的问题，提出了一种新的FDF。与建议FDF的控制系统推导和集成的速度和位置控制。大量的仿真结果表明，所提出的LSRM与新的FDF表现出上级性能，相信它可能适合于船舶电梯的应用
Linear switched reluctance motor (LSRMs) for primary propulsion of a ship elevator is proposed and investigated in this paper. To achieve the stated objective, a new type of LSRM is proposed with twin stators and a translator between them with no back iron in the translator. The proposed configuration of the LSRM is designed, simulated and analyzed and compared to traditional LSRMs. The number of LSRM propulsion subsystems required is studied with a view to minimize their weights and an optimization study for that purpose is developed. Unique placement of the LSRM propulsion systems on the elevator is presented. Six sets of asymmetric bridge converters are chosen to drive the designed LSRM endowing it with high fault tolerance to the system. The propulsion force is generated using one phase or multi-phase excitation. In order to reduce force pulsations, a major requirement in elevators, controlled multi-phase excitation using one of the known force distribution functions (FDF) is an acceptable solution. The currently available FDFs are able to reduce the force pulsations but are not able to meet the peak force command is proven in this paper. Consequently, the speed and position control do not meet even the elementary performance requirements any more. A new FDF is proposed and presented to overcome the problem caused by the conventional FDF in this paper. The control system with the proposed FDF is derived and integrated for speed and position control. Extensive simulation results prove that the proposed LSRM with the new FDF exhibits superior performance and it is believed that it may be suitable for the ship elevator application