Electromagnetic Guiding of Vertical Transportation Vehicles: Experimental Evaluation

2011

COMPEL

PurposeThe purpose of this paper is to describe the derivation of an adjustment directive for the non‐linear and coupled forces of a high‐comfort elevator guiding system based on so‐called electromagnetic ω‐actuators.Design/methodology/approachThe derivation of the adjustment directive contains a coordinate transformation from local forces and torques to global quantities.FindingsIt is demonstrated that the derived system is able to operate the guiding system of the elevator car. Measurement results show a well running system in face of several mutual influences on the actuating forces.Practical implicationsThe results presented offer the opportunity to increase the riding comfort and decrease the deterioration of high‐speed elevator systems. It is possible to apply the proposed system to ropeless elevators and to conventional elevator systems as well.Originality/valueThe methods developed and proved in this paper grant an effective way to control magnetically levitated systems with complex actuator topologies.

Section: Force Transformationmentioning

confidence: 99%

Decoupling and adjustment of forces in an electromagnetic guiding system with six degrees of freedom

Schmuelling¹,

2011

COMPEL

“…The derivation of the state space equations [9] for the spatial DOF is the same as described in [1], [7], and [2]. Therefore, in this section the derivation of the state space equations for the additional DOF χ is presented in detail.…”

Section: B Derivation Of the State Space Equationsmentioning

confidence: 99%

“…In former works (e.g. [1] and [2]), the assembling and operation of an elevator test bench is presented, which shows a well running system. The introduced system demonstrates an electromagnetic guiding system controlling five of the six spatial degrees of freedom (DOF) which are depicted in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Improvement of a non-contact elevator guiding system by implementation of an additional torsion controller

Schmuelling

Laumen

2010 IEEE Energy Conversion Congress and Exposition

2010

This paper describes the improvement of an electromagnetic elevator guiding system. Based on an existing system, which is able to control five spatial degrees of freedom of an elevator car, a system enhancement is proposed. The system of five controlled spatial degrees of freedom is augmented by a sixth degree of freedom: This is the elevator car's vertical torsion angle. Contrary to the former system, it is not longer a precondition, that the elevator car is a rigid body or the manufacturing tolerances in very high buildings are almost zero. Therefore, the system presented is more realistic than its antecessor. The present paper describes the derivation of the additional torsion controller and compares the two unequal systems. Benefits and disadvantages of the augmented system are specified and evaluated.

“…The guiding system consists of four Ω-actuators with two coils on each actuator [11] using a degree of freedom (DOF) control [12] for the translational and rotatory DOF of the elevator car. The design and control of the MGS are described in detail in [13]. Hysteresis curves of the materials PMS-700 and PMS-130i (manufacturer names).…”

Section: Introductionmentioning

confidence: 99%

Contactless power supply for magnetically levitated elevator systems using a SMC hybrid actuator

Appunn

2014 International Conference on Electrical Machines (ICEM)

2014

Self Cite

A contactless power supply (CPS) for the cabin of a magnetically levitated elevator is presented in this paper. In contrast to commercial stand-alone contactless power supply systems, a combined CPS and electromagnetic guiding system (MGS) is introduced. The inductive energy transmission is realized by utilizing the magnetic circuit of an actuator of the linear guiding. With this approach two devices are combined into one unit. The hybrid actuator consists of an omega shaped yoke, fabricated of soft magnetic composites (SMC), with permanent magnets and coils on its lateral arms. A concentrated primary winding is added to the guide rail and a coil wound around the central arm of the omega actuator functions as secondary winding. Hereby a superposition of the MGS flux and the CPS flux emerges in the magnetic circuit of the actuator and the transmission path is established. The proposed system requires less construction space and weight when compared to existing energy transmission systems.