Abstract:
Rotating machines and rotors therefor are disclosed. The bearings may be magnetic bearings configured to magnetically levitate the rotor. The rotors may include a hollow fiber-reinforced composite shaft and a magnetic bearing rotor core disposed on the shaft and configured for use with the magnetic bearing. In some examples, the rotating machines may be electrical machines.
Abstract:
The present invention relates to a rotating ring apparatus comprising: -a stationary ring (1), -a rotating ring (2) for rotation around a central region (3), -a rotation unit (4, 5) for radially bearing and rotating said rotating ring (2) with respect to the stationery ring (1), said rotation unit including a stationary induction element (4) mounted on said stationery ring (1) and a rotating induction element (5) mounted on said rotating ring (2), and -a controller (8) for controlling said rotation unit (4, 5) to rotate and levitate the rotating induction element (5).
Abstract:
A method of commutating a motor includes operatively interfacing a stator and actuated component of the motor, arranging at least two winding sets relative to the actuated component, and independently controlling the at least two winding sets so that with the at least two winding sets the actuated component is both driven and centered.
Abstract:
A rotary pump for pumping fluids through a patient having a housing with an internal region, a stator member and an impeller positioned within the housing and having impeller blades, wherein the impeller is magnetically suspended and rotated, and wherein the geometric configuration of the rotary pump is sized and proportioned to minimize stagnant and traumatic fluid flow within the rotary pump. The plurality of magnetic impeller blades are preferably rare earth, high-energy-density magnets selected from the group consisting of samarium cobalt and neodymium-iron-boron alloy.
Abstract:
The invention relates to a canned electric motor for a centrifugal pump, having a rotor (3) with an axis of rotation (A) and a stator (4), in which the rotor (3) is a hollow cylindrical outside rotor running in the direction of the axis of rotation (A) and the stator (4) is inside the rotor (3), and in which at least the surface of the rotor (4) facing the rotor (3) is surrounded by an impermeable material.
Abstract:
In a magnetically mounted oscillation-damped flywheel, both the force generating systems (M1, M2) for the radial drive and transverse movement and the corresponding control sensors (SE1...SE4) are located in the wheel hub. Parasitic oscillations can thus be drastically attenuated without any adverse effect on the wheel's swivelling range.
Abstract:
Rotary machine provided with a rotor having an armature of an electric radial field machine of which the design enables to absorb the radial bearing forces exerted on the rotor, and armature of an axial field machine of which the design enables to absorb the axial bearing forces exerted on the rotor. To regulate the normal forces there are provided field regulation means by the current influence in the stators of both electric machines, which means are themselves respectively divided into four quadrants with their own regulation members. The two electric machines are multipolar, each winding quadrant comprising at least two poles. The axial field machine is provided with three regulators enabling a stabilization in three degrees of freedom, the radial field machine having two regulators enabling a stabilization in two degrees of freedom.
Abstract:
A method of commutating a motor includes calculating an adjustment electrical angle, and utilizing the adjustment electrical angle in a common set of commutation equations so that the common set of commutation equations is capable of producing both one and two dimensional forces in the motor.
Abstract:
Die Erfindung betrifft ein Antriebssystem umfassend eine Steuerungseinrichtung (1), die über einen Datenbus (2) zum Austausch von Daten mit Antriebseinrichtungen (3a,3b,3c,3d,3e,3f,3g) verbunden ist, wobei eine Antriebseinrichtung (3a,3b) zum Ansteuern eines Antriebsmotors (7a,7b) mit dem Antriebsmotor (7a,7b) verbunden ist und eine weitere Antriebseinrichtung (3c,3d,3e,3f,3g) zum Ansteuern eines magnetischen Lagers (11c,11d,11e,11f,11g) einer magnetischen Spindellagerung (23) mit dem magnetischen Lager (11c,11d,11e,11f,11g) verbunden ist. Die Erfindung schaffst somit ein Antriebssystem in das eine magnetische Spindellagerung (23) integriert ist.
Abstract:
Der Antrieb weist einen Stator (11) und einen Rotor (12) auf. Der Rotor enthält eine Umfassung (14), die einen von dem Stator (11) abstehenden Steg (26) umgreift. Permanentmagnete (18,19,20) des Rotors wirken mit Elektromagneten (28,29,30) des Stators (11) zusammen, um den Pumpenantrieb zu bewirken und gleichzeitig eine Magnetlagerung zu bilden.