CN104393794A - Off-course squirrel cage motor brake control device and method - Google Patents
Off-course squirrel cage motor brake control device and method Download PDFInfo
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- CN104393794A CN104393794A CN201410725241.2A CN201410725241A CN104393794A CN 104393794 A CN104393794 A CN 104393794A CN 201410725241 A CN201410725241 A CN 201410725241A CN 104393794 A CN104393794 A CN 104393794A
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- driftage
- brake
- cage motor
- self
- voltage
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Abstract
The invention relates to an off-course squirrel cage motor brake control device which comprises an off-course squirrel cage motor, an electromagnetic friction brake, a brake controller, a capacitor and a self-excitation relay. The brake controller controls the voltage of the electromagnetic friction brake to be increased to the work voltage gradually according to the detected self-excitation voltage of the off-course squirrel cage motor and changing from large to small. An off-course squirrel cage motor brake control method is further provided. The brake voltage of brake force of the electromagnetic friction brake is increased from small to large in the way that the alternating current voltage of the self-excitation power generation loop changes from large to small to enable the off-course squirrel cage motor to achieve 100% braking force, so that braking of the off-course squirrel cage motor is improved, the braking is slowed, the impact load on the mechanical transmission system during braking is reduced, and the inner gear tooth collision in a machine seat is reduced.
Description
Technical field
The present invention relates to a kind of wind-driven generator and field, particularly relate to a kind of driftage interconnected cage motor brake control and control method thereof.
Background technology
During wind turbine generator work, when wind direction changes, wind turbine generator head horizontal direction must be adjusted, make head axis identical with wind direction, this action drives driftage reduction box by interconnected cage motor of going off course, driftage reduction box output gear drives frame of wind generating set internal gear, make it adjustment wind turbine generator head axis to aim at wind direction, aligning retrodeviates avionics motivation and is cut off power supply, fix for making the wind turbine generator head after adjustment, driftage interconnected cage motor axle is provided with electromagnetic friction brake, the electromagnetic brake coil power-off of driftage interconnected cage motor during the adjustment of wind turbine generator head, braking release, after the adjustment of wind power generation machine head, be energized with the coaxial mounted electromagnetic friction brake of driftage interconnected cage motor, braking comes into force.Due to electromagnetic brake or braking comes into force, or braking release, when motor of going off course stops operating, the braking of electromagnetic brake impact is large to the impact load of machine driven system, easily causes generating set support internal gear to beat tooth phenomenon.
Summary of the invention
The object of the invention is to overcome above defect, a kind of driftage interconnected cage motor brake control and control method thereof are provided, reduce the impact load to mechanical drive train when braking, beat tooth phenomenon to reduce support internal gear.
Technical scheme of the present invention is, a kind of driftage interconnected cage motor brake control, it comprises driftage interconnected cage motor, electromagnetic friction brake, brake monitor, electric capacity, self-excitation relay, brake monitor is connected with the three-phase coil of driftage interconnected cage motor by one end of self-excitation relay contact, the contact other end of self-excitation relay is connected with electric capacity, the coil of self-excitation relay is connected with brake monitor, described brake monitor is according to the descending voltage of the driftage interconnected cage motor self-excitation generating detected, the voltage controlling electromagnetic friction brake is increased to operating voltage gradually by zero.
The invention still further relates to a kind of driftage interconnected cage motor brake control method, it comprises the following steps:
Step 1, driftage interconnected cage motor AC supply voltage detect, when brake monitor detects that driftage interconnected cage motor has not had AC supply voltage, the self-excitation power generation circuit that 3 electric capacity consist ofs self-excitation relay contact by brake monitor is connected with motor 3 phase coil of going off course; Now due to the inertia of wind turbine generator head, driftage interconnected cage motor is also in rotation, so driftage interconnected cage motor enters self-excitation generating state;
Step 2, driftage motor self-excitation generating alternating voltage detect, when brake monitor detects driftage motor self-excitation generating alternating voltage, be about to be added to driftage interconnected cage motor coaxial mounted electromagnetic friction brake operating voltage the magnitude of voltage that friction plate can engage;
Step 3, progressively electromagnetic friction brake operational voltage value is increased to load voltage value, electromagnetic friction brake coil voltage is increased to electromagnetic brake coil rated voltage along with self-excitation generating alternating voltage diminishes by brake monitor, thus driftage interconnected cage motor obtains the braking moment of 100%, driftage interconnected cage motor stops operating.
Advantageous Effects of the present invention is; control signal is changed to power generation circuit alternating voltage of encouraging oneself when interconnected cage motor of going off course is shut down; brake monitor from large to small and with changing from small to big increases the brake voltage of electromagnetic friction brake braking force until driftage interconnected cage motor reaches the braking force of 100% according to its self-excitation power generation circuit alternating voltage; thus progressively strengthen to driftage interconnected cage motor brake; braking relaxes; impact load to mechanical drive train when reducing braking, reduces support internal gear and beats tooth phenomenon.
Accompanying drawing explanation
Accompanying drawing 1 is embodiment of the present invention schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
With reference to accompanying drawing, a kind of driftage interconnected cage motor brake control, it comprises driftage interconnected cage motor 1, electromagnetic friction brake 5, brake monitor 4, electric capacity 2, self-excitation relay 3, brake monitor 4 is connected with the three-phase coil of driftage interconnected cage motor 1 by the contact 3-1 of self-excitation relay 3, the contact 3-1 other end of self-excitation relay 3 is connected with electric capacity 2, the coil 3-2 of self-excitation relay 3 is connected with brake monitor 4, described brake monitor 4 is according to descending voltage driftage interconnected cage motor 1 self-excitation generating being detected, the voltage controlling electromagnetic friction brake 5 is increased to operating voltage gradually by zero.
The invention still further relates to a kind of its control method of driftage interconnected cage motor brake control method, it comprises the following steps:
Step 1, driftage interconnected cage motor 1 AC supply voltage detect, when brake monitor 4 detects that driftage interconnected cage motor 1 has not had AC supply voltage, the self-excitation power generation circuit that electric capacity 2 consists of self-excitation relay contact 3-1 by brake monitor 4 is connected with motor 1 phase coil of going off course; Now due to the inertia of wind turbine generator head, driftage interconnected cage motor 1 is also in rotation, so driftage interconnected cage motor 1 enters self-excitation generating state;
Step 2, driftage motor 1 self-excitation generating alternating voltage detect, when brake monitor 4 detect driftage motor 1 encourage oneself generating alternating voltage time, be about to be added to driftage interconnected cage motor 1 coaxial mounted electromagnetic friction brake 5 operating voltage (previous voltages is zero) magnitude of voltage that friction plate can engage;
Step 3, progressively electromagnetic friction brake 5 operational voltage value is increased to load voltage value, electromagnetic friction brake 5 coil voltage is increased to electromagnetic brake 5 coil rating voltage along with self-excitation generating alternating voltage diminishes by brake monitor 4, thus driftage interconnected cage motor 1 obtains the braking moment of 100%, driftage interconnected cage motor 1 stops operating.
Claims (2)
1. a driftage interconnected cage motor brake control, it is characterized in that, it comprises driftage interconnected cage motor, electromagnetic friction brake, brake monitor, electric capacity, self-excitation relay, brake monitor is connected with the three-phase coil of driftage interconnected cage motor by one end of self-excitation relay contact, the contact other end of self-excitation relay is connected with electric capacity, the coil of self-excitation relay is connected with brake monitor, described brake monitor is according to the descending voltage of the driftage interconnected cage motor self-excitation generating detected, the voltage controlling electromagnetic friction brake is increased to operating voltage gradually by zero.
2. a driftage interconnected cage motor brake control method, it is characterized in that, it comprises the following steps:
Step 1, driftage interconnected cage motor AC supply voltage detect, when brake monitor detects that driftage interconnected cage motor has not had AC supply voltage, the self-excitation power generation circuit that 3 electric capacity consist ofs self-excitation relay contact by brake monitor is connected with motor 3 phase coil of going off course; Now due to the inertia of wind turbine generator head, driftage interconnected cage motor is also in rotation, so driftage interconnected cage motor enters self-excitation generating state;
Step 2, driftage motor self-excitation generating alternating voltage detect, when brake monitor detects driftage motor self-excitation generating alternating voltage, be about to be added to driftage interconnected cage motor coaxial mounted electromagnetic friction brake operating voltage the magnitude of voltage that friction plate can engage;
Step 3, progressively electromagnetic friction brake operational voltage value is increased to load voltage value, electromagnetic friction brake coil voltage is increased to electromagnetic brake coil rated voltage along with self-excitation generating alternating voltage diminishes by brake monitor, thus driftage interconnected cage motor obtains the braking moment of 100%, driftage interconnected cage motor stops operating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410725241.2A CN104393794B (en) | 2014-12-04 | 2014-12-04 | A kind of driftage interconnected cage motor brake control and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410725241.2A CN104393794B (en) | 2014-12-04 | 2014-12-04 | A kind of driftage interconnected cage motor brake control and its control method |
Publications (2)
| Publication Number | Publication Date |
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| CN104393794A true CN104393794A (en) | 2015-03-04 |
| CN104393794B CN104393794B (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410725241.2A Active CN104393794B (en) | 2014-12-04 | 2014-12-04 | A kind of driftage interconnected cage motor brake control and its control method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61293187A (en) * | 1985-06-20 | 1986-12-23 | Toshiba Corp | Dynamic brake of induction motor |
| JPH10215599A (en) * | 1997-01-29 | 1998-08-11 | Aisin Seiki Co Ltd | Heat engine drive induction generator |
| CN1660621A (en) * | 2004-02-27 | 2005-08-31 | 株式会社日立制作所 | Vehicle drive device |
| CN101045433A (en) * | 2006-03-29 | 2007-10-03 | 日产自动车株式会社 | Apparatus and method for controlling braking-force distribution in vehicle collision |
| CN201096056Y (en) * | 2007-11-06 | 2008-08-06 | 航天科工哈尔滨风华有限公司电站设备分公司 | Wind power generator |
| CN103306899A (en) * | 2012-03-15 | 2013-09-18 | 西门子公司 | Electrical yaw drive for a wind turbine, wind turbine and method for operating a wind turbine |
-
2014
- 2014-12-04 CN CN201410725241.2A patent/CN104393794B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61293187A (en) * | 1985-06-20 | 1986-12-23 | Toshiba Corp | Dynamic brake of induction motor |
| JPH10215599A (en) * | 1997-01-29 | 1998-08-11 | Aisin Seiki Co Ltd | Heat engine drive induction generator |
| CN1660621A (en) * | 2004-02-27 | 2005-08-31 | 株式会社日立制作所 | Vehicle drive device |
| CN101045433A (en) * | 2006-03-29 | 2007-10-03 | 日产自动车株式会社 | Apparatus and method for controlling braking-force distribution in vehicle collision |
| CN201096056Y (en) * | 2007-11-06 | 2008-08-06 | 航天科工哈尔滨风华有限公司电站设备分公司 | Wind power generator |
| CN103306899A (en) * | 2012-03-15 | 2013-09-18 | 西门子公司 | Electrical yaw drive for a wind turbine, wind turbine and method for operating a wind turbine |
| US20130241202A1 (en) * | 2012-03-15 | 2013-09-19 | Jan Thisted | Electrical yaw drive for a wind turbine, wind turbine and method for operating a wind turbine |
Non-Patent Citations (1)
| Title |
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| 张端军 顾晓丹 何仁: "《电涡流制动的工作原理及其在汽车上应用》", 《机械设计与制造》 * |
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| CN104393794B (en) | 2017-03-15 |
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Effective date of registration: 20200522 Address after: 411101 Hunan Province, Xiangtan city Yuetang xiashesi Street No. 302 Patentee after: Xiangtan Liyuan Electric Tooling Co.,Ltd. Address before: 411101 Hunan Province, Xiangtan city Yuetang District College Road No. 38 Innovation Park Patentee before: XEMC LIGHT ELECTRIC Co.,Ltd. |