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A feedback control strategy based on Kalman filter was proposed to quantitatively study the drive train torsional vibration mitigation of doubly-fed wind turbine, and the control effect of drive train torsional vibration was compared through simulation calculation. Taking the drive train of 7.0 MW doubly-fed wind turbine as the research object, the Kalman filter was used to estimate the twist angle of the drive train, and an additional electromagnetic torque of the generator was designed for torque control based on the estimated torsional speed of low-speed shaft. The load and power generation calculations were compared with virtual damping control and no-damping control over 20 years full life cycle. The results show that, the correlation between the twist angle of the low-speed shaft estimated by the Kalman filter and the actual value can reach 0.99. The key differences between the feedback control based on the Kalman filter, the virtual damping control and the non-damping control are as follows. The equivalent fatigue load of the low-speed shaft of the drive train reduces by 2.11% and 4.89%, respectively. The equivalent fatigue load of the high-speed shaft of the drive train reduces by 1.99% and 4.78%, respectively. The power generation reduces by 200 kW·h and 700 kW·h, respectively. It can be concluded that the Kalman filter has a good estimating effect on the twist angle of drive train, and the designed additional electromagnetic torque based on the estimated torsional speed of low-speed shaft obtained by Kalman filtering has a very good suppression effect on the torsional vibration of the drive train.
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为定量研究双馈型风力发电机组传动链的扭振控制,提出了一种基于卡尔曼滤波的反馈控制策略,并通过仿真计算的方式对比了传动链扭振的控制效果。以7.0 MW双馈型风力发电机组传动链为研究对象,采用卡尔曼滤波估计传动链扭振角度,并以低速轴扭振速度估计值为参考设计了发电机附加电磁转矩作用于风电机组转矩控制,与虚拟阻尼控制、无阻尼控制进行了20年全生命周期内的载荷与发电量计算对比。结果表明:经过卡尔曼滤波估计的低速轴扭角与实际值的相关性可以达到0.99;基于卡尔曼滤波的反馈控制分别与虚拟阻尼控制、无阻尼控制的关键差异为,传动链低速轴等效疲劳载荷分别降低2.11%、4.89%,传动链高速轴等效疲劳载荷分别降低1.99%、4.78%,发电量分别降低200、700 kW·h。卡尔曼滤波对传动链扭角估计较准确,且以卡尔曼滤波估计得到的低速轴扭振速度设计的附加电磁转矩对传动链扭振具有非常好的抑制效果。
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刘河生(1995),男,硕士,工程师,主要研究方向为大容量风电机组先进降载控制技术,liuhesheng@tpri.com.cn。
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刘河生(1995),男,硕士,工程师,主要研究方向为大容量风电机组先进降载控制技术,liuhesheng@tpri.com.cn。
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The effect of wind shear on low-speed shaft twist angle and torque, figureFileSmall=uJqBxWSljA5VYpz2Qu1Lcw==, figureFileBig=VnEu3hO+diqrLEODzbIxIA==, tableContent=null), ArticleFig(id=1213164447603019843, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图1, caption=
风切变对低速轴扭角和扭矩的影响, figureFileSmall=uJqBxWSljA5VYpz2Qu1Lcw==, figureFileBig=VnEu3hO+diqrLEODzbIxIA==, tableContent=null), ArticleFig(id=1213164447800152146, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Fig.2, caption=
Analysis of low-speed shaft twist angle and torque spectral density under wind shear, figureFileSmall=fxHZ9+oviA+AhTdSEjyVTA==, figureFileBig=LKVArz/we5xQxz7A/1Vm0Q==, tableContent=null), ArticleFig(id=1213164447879843925, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图2, caption=
风切变下低速轴扭角和扭矩谱密度分析, figureFileSmall=fxHZ9+oviA+AhTdSEjyVTA==, figureFileBig=LKVArz/we5xQxz7A/1Vm0Q==, tableContent=null), ArticleFig(id=1213164448030838883, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Fig.3, caption=
The two-mass-block drive chain model, figureFileSmall=duU+k9qNgJcHVyAmu4kZLA==, figureFileBig=b5zBdSH7dBq2ZQNNWwqUZw==, tableContent=null), ArticleFig(id=1213164448139890792, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图3, caption=
两质量块传动链模型, figureFileSmall=duU+k9qNgJcHVyAmu4kZLA==, figureFileBig=b5zBdSH7dBq2ZQNNWwqUZw==, tableContent=null), ArticleFig(id=1213164448257331312, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Fig.4, caption=
Frequency domain characteristics of transfer function, figureFileSmall=B9YEquJM5ldRob+sNQC/Xg==, figureFileBig=AlBbz3KKp9rbkYLC7dUFUw==, tableContent=null), ArticleFig(id=1213164448353800307, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图4, caption=
传递函数频域特性, figureFileSmall=B9YEquJM5ldRob+sNQC/Xg==, figureFileBig=AlBbz3KKp9rbkYLC7dUFUw==, tableContent=null), ArticleFig(id=1213164448521572481, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Fig.5, caption=
Structural diagram of the Filter equation, figureFileSmall=sywWWQAyZUj326bpcR//DQ==, figureFileBig=IapIP6hj1pK4R43CG6zM7g==, tableContent=null), ArticleFig(id=1213164448613847173, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图5, caption=
滤波方程结构, figureFileSmall=sywWWQAyZUj326bpcR//DQ==, figureFileBig=IapIP6hj1pK4R43CG6zM7g==, tableContent=null), ArticleFig(id=1213164448710316171, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Fig.6, caption=
Comparison of main shaft twist angle, figureFileSmall=Iqv+ny7mqI3gjLIi72QANg==, figureFileBig=rzuhF9tf2E4gTueB8zvqYg==, tableContent=null), ArticleFig(id=1213164448815173777, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图6, caption=
主轴扭角对比, figureFileSmall=Iqv+ny7mqI3gjLIi72QANg==, figureFileBig=rzuhF9tf2E4gTueB8zvqYg==, tableContent=null), ArticleFig(id=1213164448907448473, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Fig.7, caption=
Block diagram of drive train torsional vibration suppression control, figureFileSmall=LwObwqLIlw4u5Ol1Fly0nw==, figureFileBig=WPScpusZ9BzNsLs8RnPnVA==, tableContent=null), ArticleFig(id=1213164449020694691, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图7, caption=
传动链扭振抑制控制, figureFileSmall=LwObwqLIlw4u5Ol1Fly0nw==, figureFileBig=WPScpusZ9BzNsLs8RnPnVA==, tableContent=null), ArticleFig(id=1213164449167495341, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Fig.8, caption=
Comparison of low-speed shaft twist angle spectral density under different control strategies, figureFileSmall=q7S2U9yII6lW6nrE0CEp+Q==, figureFileBig=nJG6pSAzV8ZEmHgeEEvtRw==, tableContent=null), ArticleFig(id=1213164449276547256, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图8, caption=
不同控制策略下低速轴扭角谱密度对比, figureFileSmall=q7S2U9yII6lW6nrE0CEp+Q==, figureFileBig=nJG6pSAzV8ZEmHgeEEvtRw==, tableContent=null), ArticleFig(id=1213164449377210562, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Fig.9, caption=
Comparison of output power under different control strategies, figureFileSmall=98NwlrCu87YeppgaoXHs1Q==, figureFileBig=c6IDsfp4kNIeA5XSI5lTqQ==, tableContent=null), ArticleFig(id=1213164449444319434, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图9, caption=
不同控制策略下输出功率对比, figureFileSmall=98NwlrCu87YeppgaoXHs1Q==, figureFileBig=c6IDsfp4kNIeA5XSI5lTqQ==, tableContent=null), ArticleFig(id=1213164449549177040, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Fig.10, caption=
Comparison of drive train twist angle under different control strategies, figureFileSmall=xHH/SEDCpzE5JnGeUfGqag==, figureFileBig=s2LaVmR8gBxZFx6tsgQj9A==, tableContent=null), ArticleFig(id=1213164449687589085, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图10, caption=
不同控制策略下传动链扭角对比, figureFileSmall=xHH/SEDCpzE5JnGeUfGqag==, figureFileBig=s2LaVmR8gBxZFx6tsgQj9A==, tableContent=null), ArticleFig(id=1213164449842778341, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Fig.11, caption=
Comparison of 20-year equivalent fatigue loads of high-speed shaft under different operating conditions, figureFileSmall=3MLb6abJMQG/YUvzmsj/yg==, figureFileBig=0mjVlO1QEF589HikNFwcPQ==, tableContent=null), ArticleFig(id=1213164449930858731, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图11, caption=
不同工况下高速轴20年等效疲劳载荷对比, figureFileSmall=3MLb6abJMQG/YUvzmsj/yg==, figureFileBig=0mjVlO1QEF589HikNFwcPQ==, tableContent=null), ArticleFig(id=1213164451205927156, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Fig.12, caption=
Comparison of 20-year equivalent fatigue loads for high-speed shaft, figureFileSmall=FhQVEEuTJT1ui0GmyuF6IA==, figureFileBig=F0UcRHevUfkId0MTX3v55w==, tableContent=null), ArticleFig(id=1213164451306590463, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图12, caption=
高速轴20年等效疲劳载荷对比, figureFileSmall=FhQVEEuTJT1ui0GmyuF6IA==, figureFileBig=F0UcRHevUfkId0MTX3v55w==, tableContent=null), ArticleFig(id=1213164451407253766, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Fig.13, caption=
Comparison of 20-year equivalent fatigue loads of low-speed shaft under different operating conditions, figureFileSmall=0wBS+tuFblEbqkGQSkdO4Q==, figureFileBig=PaAiqYYIi4Uc8Dz1nBQyzA==, tableContent=null), ArticleFig(id=1213164451528888589, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图13, caption=
不同工况下低速轴20年等效疲劳载荷对比, figureFileSmall=0wBS+tuFblEbqkGQSkdO4Q==, figureFileBig=PaAiqYYIi4Uc8Dz1nBQyzA==, tableContent=null), ArticleFig(id=1213164451595997458, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Fig.14, caption=
Comparison of 20-year equivalent fatigue loads for low-speed shaft, figureFileSmall=mi+Z2QT+Nw4HLVAsUDNFDQ==, figureFileBig=zJD6962JjiKjyUFn/kRniQ==, tableContent=null), ArticleFig(id=1213164451667300635, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图14, caption=
低速轴20年等效疲劳载荷, figureFileSmall=mi+Z2QT+Nw4HLVAsUDNFDQ==, figureFileBig=zJD6962JjiKjyUFn/kRniQ==, tableContent=null), ArticleFig(id=1213164451755381027, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Fig.15, caption=
Comparison of power generation in 20 years, figureFileSmall=5jgjwMzvc2LPE12joDH/tQ==, figureFileBig=EgkSJKBKvOPy6ULoGsa4lQ==, tableContent=null), ArticleFig(id=1213164451872821549, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=图15, caption=
20年发电量对比, figureFileSmall=5jgjwMzvc2LPE12joDH/tQ==, figureFileBig=EgkSJKBKvOPy6ULoGsa4lQ==, tableContent=null), ArticleFig(id=1213164451960901946, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Tab.1, caption=
The drive train parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 传动链参数 | 数值 |
|---|
| Jr/(kg·m2) | 91 588 300 |
| Jg/(kg·m2) | 9 853 540 |
| Cd/(N·m·s·rad–1) | 188 897 |
| Kd/(N·m·rad–1) | 7.0×108 |
| igb | 97.16 |
), ArticleFig(id=1213164452053176639, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=表1, caption=
传动链参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 传动链参数 | 数值 |
|---|
| Jr/(kg·m2) | 91 588 300 |
| Jg/(kg·m2) | 9 853 540 |
| Cd/(N·m·s·rad–1) | 188 897 |
| Kd/(N·m·rad–1) | 7.0×108 |
| igb | 97.16 |
), ArticleFig(id=1213164452149645646, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Tab.2, caption=
Pitch control parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 桨距角/rad | 比例增益 | 积分增益 |
|---|
| 0.079 0 | 0.003 0 | 0.000 2 |
| 0.117 9 | 0.003 1 | 0.000 3 |
| 0.148 8 | 0.003 9 | 0.000 5 |
| 0.175 8 | 0.004 5 | 0.000 7 |
| 0.200 2 | 0.005 2 | 0.000 9 |
| 0.222 9 | 0.005 9 | 0.001 0 |
| 0.244 2 | 0.005 1 | 0.001 1 |
| 0.264 6 | 0.005 4 | 0.001 2 |
| 0.284 0 | 0.005 5 | 0.001 3 |
| 0.302 8 | 0.004 8 | 0.001 3 |
| 0.320 9 | 0.005 3 | 0.001 5 |
| 0.338 5 | 0.005 9 | 0.001 5 |
| 0.355 6 | 0.004 1 | 0.001 5 |
| 0.372 3 | 0.006 9 | 0.001 1 |
), ArticleFig(id=1213164452267086166, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=表2, caption=
变桨控制参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 桨距角/rad | 比例增益 | 积分增益 |
|---|
| 0.079 0 | 0.003 0 | 0.000 2 |
| 0.117 9 | 0.003 1 | 0.000 3 |
| 0.148 8 | 0.003 9 | 0.000 5 |
| 0.175 8 | 0.004 5 | 0.000 7 |
| 0.200 2 | 0.005 2 | 0.000 9 |
| 0.222 9 | 0.005 9 | 0.001 0 |
| 0.244 2 | 0.005 1 | 0.001 1 |
| 0.264 6 | 0.005 4 | 0.001 2 |
| 0.284 0 | 0.005 5 | 0.001 3 |
| 0.302 8 | 0.004 8 | 0.001 3 |
| 0.320 9 | 0.005 3 | 0.001 5 |
| 0.338 5 | 0.005 9 | 0.001 5 |
| 0.355 6 | 0.004 1 | 0.001 5 |
| 0.372 3 | 0.006 9 | 0.001 1 |
), ArticleFig(id=1213164452384526685, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Tab.3, caption=
Operating condition parameters for power and twist angle numerical simulation
, figureFileSmall=null, figureFileBig=null, tableContent=
| 控制策略 | 功率/kW | 低速轴扭角/(°) |
|---|
| 平均值 | 标准差 | 平均值 | 标准差 |
|---|
| 无阻尼 | 7.051 | 0.030 | 0.485 | 0.018 |
| 虚拟阻尼 | 7.051 | 0.044 | 0.485 | 0.015 |
| KF-PID | 7.051 | 0.050 | 0.485 | 0.011 |
), ArticleFig(id=1213164452489384296, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=表3, caption=
功率和扭角数值仿真工况参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 控制策略 | 功率/kW | 低速轴扭角/(°) |
|---|
| 平均值 | 标准差 | 平均值 | 标准差 |
|---|
| 无阻尼 | 7.051 | 0.030 | 0.485 | 0.018 |
| 虚拟阻尼 | 7.051 | 0.044 | 0.485 | 0.015 |
| KF-PID | 7.051 | 0.050 | 0.485 | 0.011 |
), ArticleFig(id=1213164452581658986, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Tab.4, caption=
Simulated operating conditions parameters within the 20-year life cycle of the unit
, figureFileSmall=null, figureFileBig=null, tableContent=
| 疲劳工况 | 风况 | 描述 |
|---|
| DLC1.2 | Vin<Vhub<Vout | 正常发电 |
| DLC2.4 | Vin<Vhub<Vout | 发电兼故障 |
| DLC4.1 | Vin<Vhub<Vout | 正常停机 |
| DLC6.4 | Vhub<0.7Vref | 空转 |
), ArticleFig(id=1213164452694905204, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=表4, caption=
机组20年生命周期内仿真工况参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 疲劳工况 | 风况 | 描述 |
|---|
| DLC1.2 | Vin<Vhub<Vout | 正常发电 |
| DLC2.4 | Vin<Vhub<Vout | 发电兼故障 |
| DLC4.1 | Vin<Vhub<Vout | 正常停机 |
| DLC6.4 | Vhub<0.7Vref | 空转 |
), ArticleFig(id=1213164452782985592, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=EN, label=Tab.5, caption=
The 20-year equivalent fatigue loads
, figureFileSmall=null, figureFileBig=null, tableContent=
| 策略 | 低速轴转矩/(kN·m) | 降幅/% | 高速轴转矩/(kN·m) | 降幅/% |
|---|
| 无阻尼 | 2 661.16 | 4.89 | 27.38 | 4.78 |
| 虚拟阻尼 | 2 585.35 | 2.11 | 26.60 | 1.99 |
| KF-PID | 2 530.92 | | 26.07 | |
), ArticleFig(id=1213164452887843196, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164439776449334, language=CN, label=表5, caption=
20年等效疲劳载荷
, figureFileSmall=null, figureFileBig=null, tableContent=
| 策略 | 低速轴转矩/(kN·m) | 降幅/% | 高速轴转矩/(kN·m) | 降幅/% |
|---|
| 无阻尼 | 2 661.16 | 4.89 | 27.38 | 4.78 |
| 虚拟阻尼 | 2 585.35 | 2.11 | 26.60 | 1.99 |
| KF-PID | 2 530.92 | | 26.07 | |
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