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A parallel magnetic circuit memory motor and its operating method

A technology for memorizing motors and operating methods, applied to motors, motor control, synchronous motors with stationary armatures and rotating magnets, etc., can solve problems such as reducing motor efficiency and increasing motor copper consumption, and achieve reduced impact and motor efficiency The effect of improving and increasing power density

Active Publication Date: 2020-09-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, applying a continuous field current in the AC field winding must also increase the copper loss of the motor and reduce the efficiency of the motor

Method used

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  • A parallel magnetic circuit memory motor and its operating method

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Embodiment Construction

[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0042] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "left side", "right side", "upper", "lower" are based on the orientations or positional relationships shown in the accompanying drawings, and are only For the purpose of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, "first", "second" and the like do not represent components importance, and therefore should not be construed as limiting the invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present in...

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Abstract

The invention discloses a parallel magnetic circuit memory motor and an operation method. An instantaneous alternating-current pulse exciting current is introduced into an exciting winding of a stator, a rotor is provided with high-coercivity magnetic steels and tangential magnetic steels, wherein the coercive force of the high-coercive-force magnetic steels is greater than that of the tangentialmagnetic steel, the tangential magnetic steels are uniformly arranged in the circumferential direction of a rotor iron core in a built-in manner, a magnetic barrier is arranged at the top, facing theair gap, of each tangential magnetic steel, a group of high-coercivity magnetic steels is arranged in the rotor iron core between two adjacent tangential magnetic steel, each group of high-coercivitymagnetic steels is inverted V-shaped or inverted arc-shaped, a sharp top part of each group of high-coercivity magnetic steel faces the air gap and is close to an outer wall surface or an inner wall surface of the rotor iron core, two open ends of each set of high-coercivity magnetic steels are respectively provided with a quadrature-axis magnetic barrier, the other end of each quadrature-axis magnetic barrier makes contact with an end, deviating from the air gap, of the adjacent tangential magnetic steel, and a magnetic conductive bridge is arranged between the tangential magnetic steel and an opening end of the adjacent high-coercivity magnetic steel. The parallel magnetic circuit memory motor is advantaged in that online magnetic adjustment can be realized, electro-magnetic loss is verylow, and motor efficiency is high.

Description

technical field [0001] The invention relates to the field of motor design, in particular to a parallel magnetic circuit memory motor and its operating method. Background technique [0002] Permanent magnet motors have the advantages of high torque density, high power density and high efficiency, and have been applied in many occasions. According to the position classification of permanent magnets, permanent magnet motors are divided into rotor permanent magnet motors and stator permanent magnet motors. Among them, the rotor permanent magnet motor can be divided into surface mount permanent magnet motor and built-in permanent magnet motor. Since the built-in permanent magnet motor is easy to obtain a large saliency ratio and reluctance torque component, it can obtain better constant power operation capability than the surface-mounted permanent magnet motor. However, permanent magnet motors are field weakened by applying a negative direct axis current component in the armatu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/14H02K21/02H02P6/08
CPCH02K21/025H02K21/14H02P6/08H02P2207/05Y02T10/64
Inventor 李健王凯刘闯
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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