Single-core brushless synchronous motor
A synchronous motor and iron core technology, applied in the field of motors, can solve the problems of unfavorable safe operation of shafting stable units, high shaft vibration and tile amplitude values, complex system structure, etc., to achieve convenient excitation adjustment and control, excellent efficiency, and operation. reliable results
Inactive Publication Date: 2010-02-10
CHINA UNIV OF MINING & TECH +1
View PDF0 Cites 10 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Disadvantages of this system: 1) A separate excitation motor is required to be coaxially connected with the synchronous motor, so the system structure is complex; 2) The shaft system of the unit is long and there are many bearing seats, so that the shaft vibration and pad amplitude are relatively high, so the The stability of the shafting and the safe operation of the unit are unfavorable
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
[0012] The present invention will be further described below in conjunction with the embodiment in the accompanying drawings:
[0013] The stator of the present invention is composed of a stator core 2, a stator single-phase AC excitation winding 3 and a stator three-phase power winding 4. Both the stator core 2 and the rotor core 5 are of a single core structure, and a set of short-distance distributed arrangement is arranged in the stator core 2. The stator three-phase power winding 4 and a set of stator single-phase AC excitation winding 3 arranged in a centralized manner at full distances, the number of pole pairs of the stator three-phase power winding 4 is Pp, the number of pole pairs of the stator single-phase AC excitation winding 3 is Pe, and Satisfied: Pe>>Pp, Pe=2×k×Pp, (k=1, 2, 3...), k is a constant; the intermediate frequency power supply 14 provides the excitation voltage U for the stator single-phase AC excitation winding 3 se . The rotor is a hidden magnetic ...
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 a single-core brushless synchronous motor. A stator consists of a stator core, a stator single-phase AC excitation winding and a stator three-phase power winding; a rotor consists of a rotor core, a rotor AC induction winding and a rotor DC exciting winding; both the stator core and the rotor core have a single-core structure; the rotor has an invisible-magnetic-pole structure; the inside of the stator core is provided with a short-pitch three-phase power winding arrayed in a distributive manner and an integral-pitch single-phase AC exciting winding arrayed in a centralized manner, and the short-pitch three-phase power winding and the single-phase AC exciting winding are arranged in a big stator slot and a small stator slot respectively; the three-phase power winding is externally connected with a power source, and the single-phase AC excitation winding is externally connected with an intermediate-frequency power source; the inside of the rotor core is providedwith a DC exciting winding arrayed concentrically and an AC induction winding arrayed in a distributive manner, and the DC exciting winding and the AC induction winding are arranged in a big rotor slot and a small rotor slot respectively; and a rotary rectifier is fixed on a rotor shaft. The single-core brushless synchronous motor gets rid of a separate exciting motor which is in coaxial connection in the conventional brushless synchronous motor, so that the single-core brushless synchronous motor has simple structure, reliable operation, convenient maintenance, high efficiency and wide practicability.
Description
technical field [0001] The invention relates to motors, in particular to a brushless synchronous motor in which both the stator and the rotor have a single core structure. Background technique [0002] Commonly used brushless synchronous motor systems are composed of synchronous motors, rotating rectifiers and AC exciters. The synchronous motor is coaxially connected with the AC exciter, and the rotary rectifier is fixed on the rotating shaft and rotates synchronously with the rotors of the two motors. The DC excitation winding is placed in the stator core of the AC exciter, and the three-phase symmetrical AC winding is placed in the rotor core. The DC power supply provides excitation current for the stator winding of the exciter to establish a constant magnetic field. The rotation of the rotor winding of the exciter will induce an electric potential and output a three-phase AC voltage, which is converted into a DC voltage by a rotary rectifier to provide DC excitation for ...
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 Patent Type & Authority Applications(China)
IPC IPC(8): H02K19/12H02K3/12H02K3/28
Inventor 邓先明谭国俊张晓王冬冬
Owner CHINA UNIV OF MINING & TECH