Adjusting-type pole-changing speed-changing permanent-magnet synchronous motor
A permanent magnet synchronous and adjustable technology, applied to synchronous machines, electrical components, electromechanical devices, etc., can solve the problems of inability to self-start, inability to change poles and speed, and low efficiency of dual-power motors
Active Publication Date: 2014-12-03
冠龙电机有限公司
View PDF5 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The purpose of the present invention is to overcome the shortcomings of traditional small permanent magnet synchronous motors that cannot be self-started, cannot change poles and speeds, and have low efficiency of dual-power motors, and provide a small permanent magnet synchronous motor that can start asynchronously, change poles and speeds, and has high efficiency for small permanent magnet synchronous motors. Magnetic Synchronous Motor Method
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0046] The present invention is further described below in conjunction with accompanying drawing.
[0047] refer to figure 1 , figure 2 , image 3 , Figure 8 , Figure 9 , Figure 10 and Figure 11 , The rotor of the adjustable pole-changing variable-speed permanent magnet synchronous motor adopts an adjustable rotor, and the motor stator winding adopts a non-pole-changing stator winding or a pole-changing stator winding.
[0048] The rotor core part of the adjustable rotor is mainly composed of two types of rotor cores: several permanent magnet cores and several adjustable squirrel cage cores 7 . The permanent magnet core has two structures of the pole-changing permanent magnet core 5 and the non-pole-changing permanent magnet core 32 . Adjustable rotors are divided into pole-changing adjustable rotors and non-polar-changing adjustable rotors. The rotor core part of the pole-changing adjustable rotor is a pole-changing rotor core part including a pole-changing permane...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an adjusting-type pole-changing speed-changing permanent-magnet synchronous motor and particularly relates to a method applied to the permanent-magnet synchronous motor. At a low-rotating-speed low-power output, a plurality of rotor main magnetic poles and a plurality of rotor auxiliary magnetic poles establish a low-rotating-speed rotor magnetic field together, and tangential adjustment of the magnetic field does not affect a magnetic flux density of a permanent-magnet rotor in an air gap of a motor. At a high-rotation-speed large-power output, the plurality of rotor main magnetic poles establish a high-rotation-speed rotor magnetic field together. Change of a magnetic flux closed path is assisted through the rotor so that the adjusting-type rotor is capable of changing the number of magnetic poles of the motor in an automatic adapting manner and thus pole changing and speed changing of the permanent-magnet synchronous motor are realized, and at the same time, tangential adjustment of the magnetic field increases the magnetic flux intensity of the permanent-magnet rotor in the air gap of the motor. Therefore, a counter electromotive force induced by each phase of winding of the motor under the two power states is smaller and approximate to an external-end voltage and the power factors of the motor under the two power states are both approximate to 1. The adjusting-type pole-changing speed-changing permanent-magnet synchronous motor is capable of realizing a two-power design.
Description
technical field [0001] The invention is an adjustable pole-changing and speed-changing permanent magnet synchronous motor, which relates to a method applied to a permanent magnet synchronous motor, in particular to a method capable of asynchronous starting and pole-changing and speed-changing permanent magnet synchronous motors. Background technique [0002] AC asynchronous motors have low efficiency, while permanent magnet synchronous motors have high efficiency, high power factor, and remarkable energy-saving effect. Therefore, permanent magnet synchronous motors are gradually replacing AC asynchronous motors as mainstream motors. Ordinary permanent magnet synchronous motors cannot start automatically and need to be equipped with a frequency converter, but the cost of the frequency converter is relatively high. The asynchronous start permanent magnet synchronous motor does not need to be equipped with a frequency converter, which can reduce equipment costs on the premise ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H02K21/46
Inventor 赵晓东
Owner 冠龙电机有限公司