CN103546002A

CN103546002A - Efficient variable-speed constant-frequency generator

Info

Publication number: CN103546002A
Application number: CN201310438301.8A
Authority: CN
Inventors: 于波
Original assignee: 于波
Current assignee: Liu Kunming; Luo Jixing
Priority date: 2013-09-25
Filing date: 2013-09-25
Publication date: 2014-01-29

Abstract

The invention relates to an efficient variable-speed constant-frequency generator. An exciter is in a permanent magnet exciting structure. A controller (11) is connected to an exciting stator (5) winding (13), a secondary stator (3) winding (17) and a main stator (1) winding (19), and the main stator (1) winding (19) can output variable-speed constant-frequency alternating current by adjusting voltage and frequency changing values of an exciting mechanism by the micro-power control technique. The generator has the advantages of high power density, high efficiency, significant energy efficiency, less failures, long service life and low production cost and operating maintenance cost, the generator can be widely applied in generating devices, with large speed changes, of wind generation and tidal sea wave generation, and the technical defects of an existing full power inverting controller can be compensated.

Description

Efficient vscf generator

Technical field

The efficient vscf generator of the present invention belongs to environmental protection and energy saving machine field.

Background technology

Existing variable speed generation equipment, for example: the generating equipment that small-sized wind power generator, hydroelectric generator and rotation speed change are large, adopt permanent magnet excitation by the alternating current of output frequency conversion, transformation, the alternating current that need the alternating current of output frequency conversion, transformation be become to constant frequency, constant voltage by total power inverter controller can be used by charger equipment.Although, the decelerator mechanism that the generating equipment that the alternative existing small-sized wind power generator of this mode, hydroelectric generator and rotation speed change are large adopts,, total power inverter controller fault is many, expensive.Especially the large generating equipment of high-power wind-driven generator, hydroelectric generator and rotation speed change, adopt total power inverter controller to cause to operate in the electronic devices and components of powerful device fragile, manufacturing process is complicated, manufacturing cost is high, expensive, be difficult to apply.

Summary of the invention

The present invention relates to a kind of efficient vscf generator, exciter adopts permanent magnet excitation structure, it is upper that controller [11] is connected to excitation stator [5] winding [13], inferior stator [3] winding [17] and main stator [1] winding [19], adopts micropower control technology to regulate the voltage of excitation mechanism and frequency change value can realize main stator [1] winding [19] output constant frequency, constant voltage alternating current.This mode power density is large, efficiency is high, energy-conservation obviously, few, the long service life of fault, manufacturing cost and operation expense low, wind power generation, the generating of morning and evening tides sea wave and the large generating equipment of rotation speed change can be widely used in, the technological deficiency that existing employing total power inverter controller exists can be made up.

Compared with prior art, its advantage is technical solution of the present invention:

1, excitation stator [5] is arranged in end cap [8] inner circle, and inferior stator [3] and main stator [1] are arranged in same casing [7] inner circle or excitation stator [5], inferior stator [3] and main stator [1] are arranged in same casing [7] inner circle.

2, on excitation stator [5], be embedded with on winding [13], inferior stator [3] and be embedded with on winding [17] and main stator [1] and be embedded with winding [19], on inferior rotor [4], be embedded with on winding [14] and main rotor [2] and be embedded with winding [16], the upper winding [14] of inferior rotor [4] and the upper winding [16] of main rotor [2] are connected.

3, excitation rotor [6], inferior rotor [4], main rotor [2] and bearing [9] are arranged on the upper high integral structure of concentricity that forms of same rotating shaft [10].

4, permanent magnetic material is done orthogonal permanent magnet [15] shape, and the magnet steel cost of comparable existing employing tile shape permanent magnet shape is low and power density is high.

5, on rotor core [12], have axis hole [22] and key bar [21], rotor core [20] embeds the upper n of the formation equally distributed rectangular aperture groove [23] of rotor core [12] key bar [21], and rectangle permanent magnet [15] embeds and cements in and in n equally distributed rectangular aperture groove [23], forms n to the N-S utmost point exciter air gap field structure such as not.This structure can improve air gap flux density and the power density of complete machine, and the generating of can turning round of public attention that efficiency is high, the moment of resistance is little, less and head can make up the large and inefficient technological deficiency of existing product starting reactance square.

6, on excitation rotor [6], inferior rotor [4] and main rotor [2], short-circuited conducting sleeve [18] is housed, short-circuited conducting sleeve [18] is made by bus weldering riveting.This structure dynamic is good, voltage-form distortion rate is little, can make up the technological deficiency of existing product bad dynamic performance.

7, controller [11] is comprised of voltage regulator (AVR) [25] and frequency regulator (AFR) [24], and controller [11] is arranged on efficient vscf generator, forms integral structure.

8, voltage regulator (AVR) [25] power end U is connected on excitation stator [5] winding [13] and obtains power supply, and voltage regulator (AVR) [25] given side U1 is connected to the upper changing value that detects given voltage of main stator [1] winding [19].Frequency regulator (AFR) [24] sampling end f is connected to the upper changing value that detects rotation speed change respective frequencies of excitation stator [5] winding [13], and frequency regulator (AFR) [24] given side f1 is connected to the upper changing value that detects given frequency of main stator [1] winding [19].

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is excitation rotor of the present invention [6] structural representation;

Fig. 3 is controller of the present invention [11] structural representation.

execution mode

Excitation stator of the present invention [5], inferior stator [3] and main stator [1] are arranged in same casing [7] inner circle.Rotor core [16] embeds the upper n of the formation equally distributed rectangular aperture groove [23] of rotor core [12] key bar [21], and rectangle permanent magnet [15] embeds and cements in n equally distributed rectangular aperture groove [23].It is upper that excitation rotor [6], inferior rotor [4], main rotor [2] and bearing [9] are arranged on same rotating shaft [10], on excitation rotor [6], inferior rotor [4] and main rotor [2], short-circuited conducting sleeve [18] is housed, and short-circuited conducting sleeve [18] is made by bus weldering riveting.It is upper that controller [11] is connected to excitation stator [5] winding [13], inferior stator [3] winding [17] and main stator [1] winding [19], can complete complete machine assembling.

Claims

1. an efficient vscf generator, comprises that excitation stator [5], inferior stator [3], main stator [1], excitation rotor [6], inferior rotor [4], main rotor [2], bearing [9], rotating shaft [10], casing [7], end cap [8] and controller [11] form.

2. efficient vscf generator according to claim 1 is characterized in that: excitation stator [5] is arranged in end cap [8] inner circle, and inferior stator [3] and main stator [1] are arranged in same casing [7] inner circle or excitation stator [5], inferior stator [3] and main stator [1] are arranged in same casing [7] inner circle.

3. efficient vscf generator according to claim 1 is characterized in that: on excitation stator [5], be embedded with on winding [13], inferior stator [3] and be embedded with on winding [17] and main stator [1] and be embedded with winding [19].

4. efficient vscf generator according to claim 1 is characterized in that: excitation rotor [6], inferior rotor [4], main rotor [2] and bearing [9] are arranged in same rotating shaft [10].

5. efficient vscf generator according to claim 1 is characterized in that: permanent magnet material is done orthogonal permanent magnet [15] shape.

6. efficient vscf generator according to claim 1 is characterized in that: on rotor core [12], have axis hole [22] and key bar [21], rotor core [20] embeds the upper n of the formation equally distributed rectangular aperture groove [23] of rotor core [12] key bar [21], and rectangle permanent magnet [15] embeds and cements in and in n equally distributed rectangular aperture groove [23], forms n to the N-S utmost point exciter air gap field structure such as not.

7. efficient vscf generator according to claim 1 is characterized in that: on inferior rotor [4], be embedded with on winding [14] and main rotor [2] and be embedded with winding [16], the upper winding [14] of inferior rotor [4] and the upper winding [16] of main rotor [2] are connected.

8. efficient vscf generator according to claim 1 is characterized in that: excitation rotor [6],

On inferior rotor [4] and main rotor [2], short-circuited conducting sleeve [18] is housed, short-circuited conducting sleeve [18] is made by bus weldering riveting.

9. efficient vscf generator according to claim 1 is characterized in that: controller [11] is comprised of voltage regulator (AVR) [25] and frequency regulator (AFR) [24], controller [11] is arranged on efficient vscf generator, forms integral structure.

10. efficient vscf generator according to claim 1 is characterized in that: voltage regulator (AVR) [25] power end U is connected on excitation stator [5] winding [13], voltage regulator (AVR) [25] given side U1 is connected on main stator [1] winding [19], it is upper that frequency regulator (AFR) [24] sampling end f is connected to excitation stator [5] winding [13], and frequency regulator (AFR) [24] given side f1 is connected on main stator [1] winding [19].