CN117989256A - Electromagnetic brake control circuit applied to yaw system of wind turbine generator - Google Patents
Electromagnetic brake control circuit applied to yaw system of wind turbine generator Download PDFInfo
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- CN117989256A CN117989256A CN202410404348.0A CN202410404348A CN117989256A CN 117989256 A CN117989256 A CN 117989256A CN 202410404348 A CN202410404348 A CN 202410404348A CN 117989256 A CN117989256 A CN 117989256A
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- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 description 9
- 230000036961 partial effect Effects 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 239000002783 friction material Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
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Abstract
The application relates to an electromagnetic brake control circuit applied to a yaw system of a wind turbine, which comprises the following components: a first branch, a second branch, a third branch, a fourth branch and a fifth branch; the yaw motor control device comprises a yaw motor main power supply switch, a left bias starting relay, a left bias control contactor, a right bias starting relay, a right bias control contactor, a left bias starting module, a left bias feedback module, a right bias starting module, a right bias feedback module, a yaw motor electromagnetic brake power supply switch, a yaw motor electromagnetic brake release coil and a yaw motor electromagnetic brake. In the existing power supply loop of the yaw motor and the electromagnetic brake, a yaw motor electromagnetic brake power supply switch and a yaw motor electromagnetic brake release coil are additionally arranged, a coil part of the yaw motor electromagnetic brake release coil is connected in series into the power supply loop, and switch contacts are connected in series in a left yaw control loop and a right yaw control loop, so that independent control of the yaw electromagnetic brake is realized.
Description
Technical Field
The application relates to the technical field of control circuits, in particular to an electromagnetic brake control circuit applied to a yaw system of a wind turbine generator.
Background
The surface hardness of a steel plate part of a yaw brake friction plate in a yaw system of the wind turbine generator is generally above 180HBW, and a brake disc is generally made of cast iron, wherein the surface hardness is in the range of 120-175 HBW; and meanwhile, the strength of the steel plate part is obviously higher than that of the brake disc. The friction pair formed by the friction materials of the brake disc and the friction plate has different characteristics from the friction pair formed by the friction materials of the brake disc and the friction plate, and when the two friction pairs exist at the same time, the brake vibration caused by the uneven characteristics of the friction pair can be caused. The friction coefficient of the friction material is one of the keys affecting the braking moment and stability of the brake, the difference between the friction coefficient and the wear rate of the two friction pairs causes the wear speed of the brake disc to be obviously different, the friction pair with the steel plate material causes the brake disc to be excessively worn or even scrapped, and the power unit hydraulic system of the yaw brake is failed.
When the thickness reduction degree of the brake disc is not large and the brake disc is not replaced, the problem can be solved by a method for increasing the replacement frequency of the friction plate. Taking a 1.5MW wind turbine as an example, replacing 20 friction plates of 10 yaw brakes generally requires 4-5 people to work continuously for 15 hours, and meanwhile, the cost of the friction plates is up to tens of thousands of yuan. And excessive wear of the brake disc can cause great change of the surface roughness of the brake disc, the relative design value is obviously increased, the friction coefficient between the brake disc and friction materials of the friction plates is obviously higher than the design value, the replacement frequency of the friction plates is greatly improved compared with that before the brake disc is worn, and no small maintenance cost pressure is caused to the wind power plant. The method of replacing the friction plates is only a temporary solution, and the wear rate of the friction plates cannot be accurately estimated due to the large change of the surface roughness of the brake disc, so that the risk of excessive wear of the brake disc again exists.
When the thickness of the brake disc changes greatly, the strength and the rigidity of the brake disc are seriously insufficient, and the failure risk exists, the measures of hoisting and replacing the brake disc are needed immediately so as to ensure the operation safety of the wind turbine generator. Because of the special installation position of the brake disc, the maintenance is difficult in the use process and the replacement cost is high, the manufacturing precision and the quality of the brake disc are required to be high, the on-site installation condition is far less than the controllability of factory assembly, the installation quality is difficult to control, and the generating capacity and the availability of the wind turbine generator are further adversely affected.
In addition to causing serious damage to the yaw system, excessive wear of the brake disc can also affect the proper operation of the hydraulic system. Because the installation space of the yaw brake is narrow, the size of the brake shell is limited, and the stroke of a piston in the brake is further shortened; meanwhile, the short stroke is also beneficial to uniformly applying pressure to the friction plate by the piston. However, the piston stroke design is generally based on the normal wear condition of the friction plate, and does not consider the abnormal condition after the friction material is worn out. Practice in the actual running process of the wind turbine generator system proves that after friction materials are completely worn, the stroke of a brake piston exceeds a design value, and a pressure-resistant sealing ring at the tail end of the piston can be separated from the piston, so that hydraulic oil is leaked. Meanwhile, the friction plate is likely to be separated from the groove of the yaw brake and falls onto a top platform of the unit, so that the hydraulic oil leakage condition is worsened, and serious pollution and fire hazards are caused inside the unit.
Disclosure of Invention
The application provides an electromagnetic brake control circuit applied to a yaw system of a wind turbine, which aims to solve the problem that friction plates of yaw brakes are worn quickly in the related art at least to a certain extent.
The scheme of the application is as follows:
An electromagnetic brake control circuit applied to a yaw system of a wind turbine generator, comprising:
A first branch, a second branch, a third branch, a fourth branch and a fifth branch;
The yaw motor control device comprises a yaw motor main power supply switch, a left bias starting relay, a left bias control contactor, a right bias starting relay, a right bias control contactor, a left bias starting module, a left bias feedback module, a right bias starting module, a right bias feedback module, a yaw motor electromagnetic brake power supply switch, a yaw motor electromagnetic brake release coil and a yaw motor electromagnetic brake;
wherein the first branch, the second branch, the third branch and the fourth branch are connected in parallel;
The fifth branch is connected to the first branch;
The first branch is a yaw motor power supply loop;
the second branch includes: a left-right yaw control circuit, a left-bias control circuit and a right yaw control circuit;
The third branch includes: a left bias starting circuit and a left bias feedback loop;
the fourth branch includes: a right bias starting circuit and a right bias feedback loop;
The yaw motor main power supply switch is arranged on the first branch and connected in series with a yaw enabling loop;
the yaw motor electromagnetic brake power supply switch and the switch contact of the yaw motor electromagnetic brake release coil are connected in series on the left yaw control loop and the right yaw control loop;
the switching contact of the left deflection starting relay, the first group of switching contacts of the right deflection control contactor and the coil part of the left deflection control contactor are connected in series on the left deflection control loop;
the switch contact of the right deflection starting relay, the first group of switch contacts of the left deflection control contactor and the coil part of the right deflection control contactor are connected in series on the right yaw control loop;
The coil parts of the left-hand starting module and the left-hand starting relay are connected in series on the left-hand starting circuit;
The left bias feedback module and a second group of switch contacts of the left bias control contactor are connected in series on the left bias feedback loop;
The right deviation starting module and the coil part of the right deviation starting relay are connected in series on the right deviation starting circuit;
the right deviation feedback module and a second group of switch contacts of the right deviation control contactor are connected in series on the right deviation feedback loop;
The coil part of the yaw motor electromagnetic brake release coil and the yaw motor electromagnetic brake are connected in series on the fifth branch.
Preferably, the method further comprises:
The first overcurrent protection power supply switch, the second overcurrent protection power supply switch, the third overcurrent protection power supply switch and the fourth overcurrent protection power supply switch;
The first overcurrent protection power supply switch, the second overcurrent protection power supply switch, the third overcurrent protection power supply switch, the fourth overcurrent protection power supply switch and the yaw motor total power supply switch are connected in series on the first branch and are connected in series into a yaw enabling loop;
The first overcurrent protection power supply switch is used for protecting the first yaw motor;
the second overcurrent protection power supply switch is used for protecting the second yaw motor;
the third overcurrent protection power supply switch is used for protecting a third yaw motor;
the fourth overcurrent protection power supply switch is used for protecting the fourth yaw motor.
Preferably, the method further comprises:
a first safety chain yaw enable relay and a second safety chain yaw enable relay;
The first safety chain yaw enabling relay, the second safety chain yaw enabling relay and the yaw motor main power supply switch are connected in series on the first branch, and are connected in series into a yaw enabling loop.
Preferably, the method further comprises:
A yaw-enabling contactor;
The coil part of the yaw enabling contactor and the yaw motor main power supply switch are connected in series on the first branch;
The switch contact of the yaw enabling contactor, the power supply switch of the yaw motor electromagnetic brake and the switch contact of the yaw motor electromagnetic brake release coil are connected in series on the left yaw control loop and the right yaw control loop.
Preferably, the method further comprises:
a yaw electric group temperature monitoring relay;
the yaw electric group temperature monitoring relay, the yaw motor electromagnetic brake power supply switch and the switch contact of the yaw motor electromagnetic brake release coil are connected in series on the left yaw control loop and the right yaw control loop.
Preferably, the coil part of the left deflection control contactor, the coil part of the right deflection control contactor, the coil part of the left deflection starting relay, the coil part of the right deflection starting relay and the coil part of the yaw motor electromagnetic brake release coil are all connected into the first branch.
The technical scheme provided by the application can comprise the following beneficial effects: the existing yaw motor of the circuit and the electromagnetic brake use the same power supply loop, and the electromagnetic brake does not have an independent control loop, so that the electromagnetic brake can release the brake at a fixed time point. According to the technical scheme, in the existing power supply loop of the yaw motor and the electromagnetic brake, a yaw motor electromagnetic brake power supply switch and a yaw motor electromagnetic brake release coil are additionally arranged, a coil part of the yaw motor electromagnetic brake release coil is connected in series into the power supply loop, and switch contacts are connected in series in a left yaw control loop and a right yaw control loop, so that independent control of the yaw electromagnetic brake is realized. The circuit design in the application forms an independent control loop of the yaw motor electromagnetic brake, thereby realizing the control of the brake cut-in time, releasing the brake in advance and then starting the motor to operate, further reducing the wear speed of the electromagnetic brake, inhibiting the frequency of the wear warning of the yaw motor brake, reducing the unnecessary wear of the yaw motor electromagnetic brake, improving the stability of the unit and reducing the maintenance cost.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a circuit configuration diagram of an electromagnetic brake control circuit applied to a yaw system of a wind turbine generator according to an embodiment of the present application.
Reference numerals: yaw motor total power supply switch-K1; yaw motor electromagnetic brake power supply switch-K2; a first overcurrent protection power supply switch-K3; a second overcurrent protection power supply switch-K4; a third overcurrent protection power supply switch-K5; a fourth overcurrent protection power supply switch-K6;
a left-offset starting module-D1; a left offset feedback module-D3; right offset starting module-D2; right bias feedback module-D4; yaw motor electromagnetic brake-D5;
Coil part-A11 of left-biased start relay; a switch contact-A12 of the left-biased starting relay;
Coil portion-a 21 of the left bias control contactor; a first set of switch contacts-a 22 of the left-hand control contactor; a second set of switch contacts-a 23 of the left-hand bias control contactor;
Coil part-A31 of right bias starting relay; switch contact-A32 of right bias starting relay;
Coil portion-a 41 of the right bias control contactor; a first set of switch contacts-a 42 of the right bias control contactor; a second set of switch contacts-a 43 of the right bias control contactor;
A coil part-A51 of a yaw motor electromagnetic brake release coil; switch contact-A52 of yaw motor electromagnetic brake release coil;
a first safety chain yaw enable relay-A6;
A second safety chain yaw enable relay-A7;
A coil portion-a 81 of the yaw-enabling contactor; switch contact-a 82 of the yaw-enabling contactor;
yaw deck temperature monitoring relay-A9.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.
An electromagnetic brake control circuit applied to a yaw system of a wind turbine generator, comprising:
A first branch, a second branch, a third branch, a fourth branch and a fifth branch;
The yaw motor main power supply switch K1, the left bias starting relay, the left bias control contactor, the right bias starting relay, the right bias control contactor, the left bias starting module D1, the left bias feedback module D3, the right bias starting module D2, the right bias feedback module D4, the yaw motor electromagnetic brake D5 power supply switch K2, the yaw motor electromagnetic brake release coil and the yaw motor electromagnetic brake D5;
the first branch, the second branch, the third branch and the fourth branch are connected in parallel;
The fifth branch is connected to the first branch;
the first branch is a yaw motor power supply loop;
the second branch includes: a left-right yaw control circuit, a left-bias control circuit and a right yaw control circuit;
the third branch includes: a left bias starting circuit and a left bias feedback loop;
the fourth branch includes: a right bias starting circuit and a right bias feedback loop;
the yaw motor main power supply switch K1 is arranged on the first branch and connected in series with the yaw enabling loop;
The power supply switch K2 of the yaw motor electromagnetic brake D5 and the switch contact A52 of the brake release coil of the yaw motor electromagnetic brake are connected in series on the left yaw control loop and the right yaw control loop;
the switch contact A12 of the left deflection starting relay, the first group of switch contacts A42 of the right deflection control contactor and the coil part A21 of the left deflection control contactor are connected in series on a left deflection control loop;
the switch contact A32 of the right deflection starting relay, the first group of switch contacts A22 of the left deflection control contactor and the coil part A41 of the right deflection control contactor are connected in series on a right yaw control loop;
the left-hand starting module D1 and a coil part A11 of the left-hand starting relay are connected in series on the left-hand starting circuit;
The left bias feedback module D3 and a second group of switch contacts A23 of the left bias control contactor are connected in series on a left bias feedback loop;
The right deviation starting module D2 and a coil part A31 of the right deviation starting relay are connected in series on a right deviation starting circuit;
The right deviation feedback module D4 and a second group of switch contacts A43 of the right deviation control contactor are connected in series on a right deviation feedback loop;
the coil part A51 of the yaw motor electromagnetic brake release coil and the yaw motor electromagnetic brake D5 are connected in series on the fifth branch.
It should be noted that, as shown in fig. 1, the leftmost branch in fig. 1 is the first branch, and in fig. 1, the first branch, the second branch, the third branch, the fourth branch and the fifth branch are sequentially from left to right;
The first branch is a yaw motor power supply loop, namely a total power supply loop.
As shown in fig. 1, the second branch includes a main circuit and two branches, the main circuit is a left-right yaw control circuit, and the branches are a left-right yaw control circuit and a right yaw control circuit.
As shown in fig. 1, the third branch includes: a left bias starting circuit and a left bias feedback loop; the left-hand starting circuit is the lower half branch of the third branch including the left-hand starting module D1 in fig. 1, and the left-hand feedback loop is the upper half branch of the third branch including the left-hand feedback module D3 in fig. 1.
As shown in fig. 1, the fourth branch includes: a right bias starting circuit and a right bias feedback loop; the left offset starting circuit is the lower half branch of the fourth branch including the right offset starting module D2 in fig. 1, and the left offset feedback loop is the upper half branch of the fourth branch including the right offset feedback module D4 in fig. 1.
As shown in fig. 1, the fifth branch is a part of the control circuit of the yaw motor electromagnetic brake D5. The control component of the yaw motor electromagnetic brake D5 mainly comprises a yaw motor electromagnetic brake D5 power supply switch K2 and a yaw motor electromagnetic brake release coil.
It should be noted that, yaw motor total power supply switch K1, left side partial starting relay, left side partial control contactor, right side partial starting relay, right side partial control contactor, left side partial starting module D1, left side partial feedback module D3, right side partial starting module D2 and right side partial feedback module D4 are the device in the current wind turbine generator system yaw, this technical scheme has add yaw motor electromagnetic brake stopper D5 power supply switch K2 and yaw motor electromagnetic brake stopper brake release coil in current circuit yaw motor and electromagnetic brake's power supply circuit, yaw motor electromagnetic brake stopper brake release coil's coil part A51 cluster goes into power supply circuit, switch contact establishes ties in left and right yaw control circuit, thereby realized yaw electromagnetic brake stopper's individual control. The circuit design in this technical scheme has constituted the independent control circuit of yaw motor electromagnetic brake stopper D5 to realize controlling brake cut-in time, release brake then motor start operation in advance, and then reduce the wearing and tearing speed of electromagnetic brake, restrain yaw motor brake and wear and tear the frequency of warning, reduce yaw motor electromagnetic brake unnecessary wearing and tearing, improve unit stability, reduce maintenance cost.
Referring to fig. 1, the electromagnetic brake control circuit applied to the yaw system of the wind turbine generator further includes:
The first overcurrent protection power supply switch K3, the second overcurrent protection power supply switch K4, the third overcurrent protection power supply switch K5 and the fourth overcurrent protection power supply switch K6;
The first overcurrent protection power supply switch K3, the second overcurrent protection power supply switch K4, the third overcurrent protection power supply switch K5, the fourth overcurrent protection power supply switch K6 and the yaw motor main power supply switch K1 are connected in series on the first branch circuit and are connected in series into a yaw enabling loop;
The first overcurrent protection power supply switch K3 is used for protecting the first yaw motor;
the second overcurrent protection power supply switch K4 is used for protecting the second yaw motor;
the third overcurrent protection power supply switch K5 is used for protecting a third yaw motor;
the fourth overcurrent protection power supply switch K6 is used for protecting the fourth yaw motor.
It should be noted that, the overcurrent protection power supply switch in this embodiment is mainly used for protecting each yaw motor.
It should be noted that, in this embodiment, each of the overcurrent protection power switches is connected to the first branch through a contact. Note that, the yaw motor total power switch K1 is also connected to the first branch through a contact.
Referring to fig. 1, the electromagnetic brake control circuit applied to the yaw system of the wind turbine generator further includes:
a first safety chain yaw enable relay A6 and a second safety chain yaw enable relay A7;
The first safety chain yaw enabling relay A6, the second safety chain yaw enabling relay A7 and the yaw motor total power supply switch K1 are connected in series on the first branch path and are connected in series into a yaw enabling loop.
Referring to fig. 1, the electromagnetic brake control circuit applied to the yaw system of the wind turbine generator further includes:
A yaw-enabling contactor;
The coil part A81 of the yaw enabling contactor and the yaw motor total power supply switch K1 are connected in series on a first branch;
The switch contact A82 of the yaw enabling contactor, the power supply switch K2 of the yaw motor electromagnetic brake D5 and the switch contact A52 of the yaw motor electromagnetic brake release coil are connected in series on the left yaw control loop and the right yaw control loop.
Referring to fig. 1, the electromagnetic brake control circuit applied to the yaw system of the wind turbine generator further includes:
Yaw electric group temperature monitoring relay A9;
the yaw electric group temperature monitoring relay A9, the yaw motor electromagnetic brake D5 power supply switch K2 and the switch contact A52 of the yaw motor electromagnetic brake release coil are connected in series on the left yaw control loop and the right yaw control loop.
It will be appreciated that the yaw deck temperature monitoring relay A9 is used to monitor the circuit temperature of the left and right yaw control loops to prevent overheating and burnout of the circuit.
Referring to fig. 1, a coil portion a21 of a left bias control contactor, a coil portion a41 of a right bias control contactor, a coil portion a11 of a left bias starting relay, a coil portion a31 of a right bias starting relay and a coil portion a51 of a yaw motor electromagnetic brake release coil are all connected to a first branch.
It can be understood that the first branch is a yaw motor power supply loop, and the coil part A21 of the left deflection control contactor, the coil part A41 of the right deflection control contactor, the coil part A11 of the left deflection starting relay, the coil part A31 of the right deflection starting relay and the coil part A51 of the yaw motor electromagnetic brake release coil are connected into the first branch for obtaining power supply.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "plurality" means at least two.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (6)
1. An electromagnetic brake control circuit applied to a yaw system of a wind turbine generator, comprising:
A first branch, a second branch, a third branch, a fourth branch and a fifth branch;
The yaw motor control device comprises a yaw motor main power supply switch, a left bias starting relay, a left bias control contactor, a right bias starting relay, a right bias control contactor, a left bias starting module, a left bias feedback module, a right bias starting module, a right bias feedback module, a yaw motor electromagnetic brake power supply switch, a yaw motor electromagnetic brake release coil and a yaw motor electromagnetic brake;
wherein the first branch, the second branch, the third branch and the fourth branch are connected in parallel;
The fifth branch is connected to the first branch;
The first branch is a yaw motor power supply loop;
the second branch includes: a left-right yaw control circuit, a left-bias control circuit and a right yaw control circuit;
The third branch includes: a left bias starting circuit and a left bias feedback loop;
the fourth branch includes: a right bias starting circuit and a right bias feedback loop;
The yaw motor main power supply switch is arranged on the first branch and connected in series with a yaw enabling loop;
the yaw motor electromagnetic brake power supply switch and the switch contact of the yaw motor electromagnetic brake release coil are connected in series on the left yaw control loop and the right yaw control loop;
the switching contact of the left deflection starting relay, the first group of switching contacts of the right deflection control contactor and the coil part of the left deflection control contactor are connected in series on the left deflection control loop;
the switch contact of the right deflection starting relay, the first group of switch contacts of the left deflection control contactor and the coil part of the right deflection control contactor are connected in series on the right yaw control loop;
The coil parts of the left-hand starting module and the left-hand starting relay are connected in series on the left-hand starting circuit;
The left bias feedback module and a second group of switch contacts of the left bias control contactor are connected in series on the left bias feedback loop;
The right deviation starting module and the coil part of the right deviation starting relay are connected in series on the right deviation starting circuit;
the right deviation feedback module and a second group of switch contacts of the right deviation control contactor are connected in series on the right deviation feedback loop;
The coil part of the yaw motor electromagnetic brake release coil and the yaw motor electromagnetic brake are connected in series on the fifth branch.
2. The electromagnetic brake control circuit for a wind turbine yaw system of claim 1, further comprising:
The first overcurrent protection power supply switch, the second overcurrent protection power supply switch, the third overcurrent protection power supply switch and the fourth overcurrent protection power supply switch;
The first overcurrent protection power supply switch, the second overcurrent protection power supply switch, the third overcurrent protection power supply switch, the fourth overcurrent protection power supply switch and the yaw motor total power supply switch are connected in series on the first branch and are connected in series into a yaw enabling loop;
The first overcurrent protection power supply switch is used for protecting the first yaw motor;
the second overcurrent protection power supply switch is used for protecting the second yaw motor;
the third overcurrent protection power supply switch is used for protecting a third yaw motor;
the fourth overcurrent protection power supply switch is used for protecting the fourth yaw motor.
3. The electromagnetic brake control circuit for a wind turbine yaw system of claim 1, further comprising:
a first safety chain yaw enable relay and a second safety chain yaw enable relay;
The first safety chain yaw enabling relay, the second safety chain yaw enabling relay and the yaw motor main power supply switch are connected in series on the first branch, and are connected in series into a yaw enabling loop.
4. The electromagnetic brake control circuit for a wind turbine yaw system of claim 1, further comprising:
A yaw-enabling contactor;
The coil part of the yaw enabling contactor and the yaw motor main power supply switch are connected in series on the first branch;
The switch contact of the yaw enabling contactor, the power supply switch of the yaw motor electromagnetic brake and the switch contact of the yaw motor electromagnetic brake release coil are connected in series on the left yaw control loop and the right yaw control loop.
5. The electromagnetic brake control circuit for a wind turbine yaw system of claim 1, further comprising:
a yaw electric group temperature monitoring relay;
the yaw electric group temperature monitoring relay, the yaw motor electromagnetic brake power supply switch and the switch contact of the yaw motor electromagnetic brake release coil are connected in series on the left yaw control loop and the right yaw control loop.
6. The electromagnetic brake control circuit applied to a yaw system of a wind turbine generator according to claim 1, wherein the coil portion of the left bias control contactor, the coil portion of the right bias control contactor, the coil portion of the left bias starting relay, the coil portion of the right bias starting relay and the coil portion of the yaw motor electromagnetic brake release coil are all connected to the first branch.
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| CN202410404348.0A CN117989256B (en) | 2024-04-07 | 2024-04-07 | Electromagnetic brake control circuit applied to yaw system of wind turbine generator |
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| CN202410404348.0A CN117989256B (en) | 2024-04-07 | 2024-04-07 | Electromagnetic brake control circuit applied to yaw system of wind turbine generator |
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| US4280740A (en) * | 1978-04-06 | 1981-07-28 | Honda Giken Kogyo Kabushiki Kaisha | Skid prevention method and an anti-skid brake device |
| US5671982A (en) * | 1994-11-25 | 1997-09-30 | Itt Automotive Europe Gmbh | System for applying a yawing control moment by setting brake valve opening and closing times |
| CN1166811A (en) * | 1994-11-25 | 1997-12-03 | Itt欧洲自动车股份公司 | Driving stability control system |
| US20110094837A1 (en) * | 2008-06-17 | 2011-04-28 | Otis Elevator Company | Safe control of a brake using low power control devices |
| CN111878311A (en) * | 2020-08-31 | 2020-11-03 | 龙源电力集团股份有限公司 | Braking logic reconstruction circuit suitable for wind generating set |
| CN214247568U (en) * | 2020-08-31 | 2021-09-21 | 龙源电力集团股份有限公司 | Braking logic transformation circuit suitable for wind turbine generator |
| CN216111105U (en) * | 2021-11-12 | 2022-03-22 | 华能如东八仙角海上风力发电有限责任公司 | Nondestructive yaw control and fault early warning system for wind driven generator |
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