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Permanent magnet generator system with variable leakage reactance and large rotating speed range output

A permanent magnet generator, wide speed technology, applied in electrical components, electromechanical devices, electric components, etc., can solve the problems of low reliability and complex control, and achieve the effects of high reliability, small output voltage pulsation and high efficiency

Active Publication Date: 2011-09-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of complex control and low reliability existing in the existing permanent magnet generator system, the present invention proposes a permanent magnet generator system with variable leakage reactance and wide speed range output

Method used

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  • Permanent magnet generator system with variable leakage reactance and large rotating speed range output
  • Permanent magnet generator system with variable leakage reactance and large rotating speed range output
  • Permanent magnet generator system with variable leakage reactance and large rotating speed range output

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specific Embodiment approach 1

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 1. The leakage reactance variable wide speed range output permanent magnet generator system described in this embodiment is composed of a three-phase permanent magnet synchronous generator and two three-phase rectifiers. The three-phase permanent magnet synchronous The generator includes a stator, a rotor and an air gap. The rotor is composed of a permanent magnet 6, a rotor yoke 7 and a rotating shaft, and the number of poles of the rotor is 10n; the stator is composed of an iron core 1 and two sets of three-phase windings. The phase difference between the windings is 30° electrical angle; the number of slots of the stator core 1 is 12n, n is a positive integer, the two sets of three-phase windings are concentrated windings, and each set of three-phase windings is composed of 6n coils , the 6n coils in each set of three-phase windings are evenly distributed along the circumference and wound on the armature core teeth 4, t...

specific Embodiment approach 2

[0015] Specific Embodiment 2. This embodiment is a further limitation of the leakage reactance variable wide speed range output permanent magnet generator system described in specific embodiment 1. The leakage reactance variable wide speed range output permanent magnet generator in this embodiment The leakage reactance regulating piece 5 in the machine system is flat-shaped, and the flat leakage reactance regulating piece 5 is located in the radial middle position of the groove where it is located, and divides the groove where it is located into two parts, the axial length of which is less than The distance between the axial ends of the winding in its slot.

[0016] see figure 2 As shown, when n=1, the structural schematic diagram of the permanent magnet generator described in the present embodiment, the number of stator slots of the permanent magnet generator is 12 slots, and the number of rotor poles is 10 poles, so two adjacent stators The electrical angle difference betw...

specific Embodiment approach 3

[0017] Specific Embodiment 3. This embodiment is a further limitation of the leakage reactance variable wide speed range output permanent magnet generator system described in specific embodiment 1. The leakage reactance variable wide speed range output permanent magnet generator in this embodiment The leakage reactance regulating piece 5 in the machine system is tile-shaped, and the tile-shaped regulating piece is located in the radial middle position of the groove where it is located, and divides the groove where it is located into two parts, the axial length of which is less than The distance between the axial ends of the winding in its slot.

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Abstract

The invention discloses a permanent magnet generator system with variable leakage reactance and large rotating speed range output, solving the problems of complex control and low reliability in the traditional permanent magnet generator system. The number of rotor poles of a three-phase permanent magnet synchronizing generator in the system is 10n; a phase difference between two sets of three-phase windings of a stator is a 30-DEG electric angle; the number of slots of a stator iron core is 12n, the two sets of three-phase windings are concentrated windings, 6n coils constituting each set of three-phase winding are uniformly distributed and wound on an armature core tooth along the circumference, one set of winding with more turns is embedded in the bottom layer of a slot, the other set of winding with less turns is embedded in the upper layer of the slot, a leakage resistance regulating sheet is arranged between the upper winding and the lower winding; and the output end of each set of three-phase winding is connected with the alternating-current input end of one three-phase rectifier, and direct-current output ends of the two three-phase rectifiers are connected in parallel or in series and then connected to a common direct-current bus. The invention is suitable for wind power generation systems.

Description

technical field [0001] The invention relates to an output permanent magnet generator system with variable leakage reactance and wide speed range, which belongs to the field of motors. Background technique [0002] As a generator, the permanent magnet motor has many advantages due to the omission of the excitation winding and the collector ring and brush that are prone to failure: simple structure, reduced processing and assembly costs, more reliable operation, etc. The rare earth permanent magnet generator has significant advantages such as small size, light weight, high efficiency, and flexible shape and size of the motor; at the same time, due to the small permeability of the permanent magnet in the direct axis magnetic circuit, the direct axis armature The reaction reactance is much smaller than that of the electric excitation synchronous generator, so the inherent voltage adjustment rate is smaller than that of the electric excitation synchronous generator. Therefore, s...

Claims

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Application Information

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IPC IPC(8): H02K1/14H02K3/18H02K3/12H02K11/00H02K1/27H02K11/21
Inventor 寇宝泉白崟儒钱海荣
Owner HARBIN INST OF TECH
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