Brushless synchronous dynamo

A synchronous motor and rotor technology, which is applied in the direction of controlling generators through magnetic field changes, can solve the problems of high shaft vibration and tile amplitude, complex system structure, long shaft system of the unit, etc., to achieve convenient adjustment and control, and simple system structure. Effect

Active Publication Date: 2010-05-26
CHAJNA MAJNING DRAJVS EHND AUTOMEHJSHN KO
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] Disadvantages of this system: a separate excitation motor is required to be connected coaxially with the synchronous motor, and the system structure is complex; the shafting of the unit is long, and there are many bearing seats, so that the shaft vibration and the amplitude of the pad are relatively high, which is harmful to the stability of the shafting and the stability of the unit bad for safe operation

Method used

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Examples

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Embodiment 1

[0018] Embodiment 1: The brushless synchronous motor, in figure 1 Among them, it consists of a stator, a rotor, a rotating shaft 9 and a rotary rectifier 10. The stator is composed of stator core 1, stator three-phase power winding 2 and stator single-phase excitation winding 4, and the rotor is composed of rotor AC induction winding 5, rotor core 6 and rotor DC winding 8.

[0019] Both the stator core 1 and the rotor core 6 are made of silicon steel sheets with a thickness of 0.3 mm. There are multiple stator three-phase power winding slots 11 and one stator single-phase excitation winding slot 3 on the inner surface of the stator core, and multiple rotor DC winding slots 12 and one rotor AC induction winding slot 7 on the outer surface of the rotor core. .

[0020] exist figure 2 Among them, the inner surface of the stator core 1 has two kinds of stator slots: the stator three-phase power winding slot 11 and the stator single-phase excitation winding slot 3, the stator t...

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Abstract

A brushless synchronous dynamo is disclosed, belonging to synchronous dynamo. The brushless synchronous dynamo is composed of a spindle (9), a rotary rectifier (10), a stator and a rotor; the stator is provided with a stator core (1), a stator three phase power winding (2) and a stator single phase exciting winding (4); the rotor is provided with an AC inductive winding (5), a rotor core (6), a rotor DC winding (8) and the rotary rectifier (10); the rotary rectifier (10) is fixed on the spindle (9), the output end of the rotor AC inductive winding (5) is connected with the input end of the rotary rectifier (10), and the output end of the rotary rectifier (10) is connected with the rotor DC winding (8). The invention has the advantages that the brushless synchronous dynamo of the above structure dispenses with the electric brush and slip ring structure at the rotor side in a conventional synchronous dynamo as well as the coaxially connected independent exciting dynamo, so that the dynamo has simple design and structure, reliable operation and convenient maintenance, small loss, high efficiency and diverse application occasions.

Description

technical field [0001] The invention relates to a synchronous motor, in particular to a brushless synchronous motor. Background technique [0002] A common brushless synchronous motor system consists of a synchronous motor, a rotating rectifier, and an AC exciter. 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. [0003] 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, and establishes a constant excitation magnetic field. The rotation of the rotor winding of the exciter will induce an electric potential, and output a three-phase AC voltage. The excitation voltage is used to establish the rotor magnetic field required by the synchronous motor. [0004] Adjustin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/14
Inventor 谭国俊邓先明张晓胡堃陈治国何凤有
Owner CHAJNA MAJNING DRAJVS EHND AUTOMEHJSHN KO
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