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In order to solve the problems that the magnetomotive force angles of parallel branches of each phase are different in the rotor single pole-changing equal-turn winding scheme of the brushless doubly-fed generator, and the current amplitudes of rotor winding branches are different resulting in the percentages of the magnetomotive force changing with the load and the reduction of the wire utilization, the unequal-turn design scheme and improved scheme for reversing all the coils of the three self-shorted branches to the corresponding connecting line are proposed. The generator operating characteristics of equal-turn, unequal-turn and improved scheme are simulated based on the finite element. Results show that the unequal-turn scheme reduces the harmonic contents, cuts down the difference among the current amplitudes of parallel branches and improves the waveform quality. In the improved scheme, the rotor branches waveforms quality is good, the current amplitudes are equal, the wire utilization rates are improved, the harmonic contents are furtherly reduced, and the magnetomotive force are fixed, which is easy for the generator control.
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为了解决无刷双馈发电机转子单绕组变极等匝方案中每相并联支路磁动势相位不一致,以及转子绕组电流幅值不同导致磁动势百分比随负载变化而变化、降低了导线利用率的问题,本文提出不等匝设计方案和将3个自短接运行支路上的所有线圈反向连接后转移到相应连接线上的改进方案。通过有限元仿真分析等匝、不等匝和改进方案中的发电机运行特性,结果显示:不等匝方案减少了谐波含量,降低了并联支路电流幅值之差且改善了波形质量;改进方案的转子各支路电流波形质量良好、幅值相等,提高了导线整体利用率,进一步降低了谐波含量,同时磁动势含量百分比固定不变,便于发电机线性控制。
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贾 磊(1986—),男,河南信阳人,博士,讲师,主要研究方向为无刷双馈电机运行理论、建模与仿真、设计和优化。
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1 School of Electrical Engineering, University of South China, Hengyang, Hunan 421001, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1190373051276558819, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, authorId=1190373051154923999, language=CN, stringName=贾磊, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 南华大学电气工程学院,湖南 衡阳 421001, bio={"content":"
贾 磊(1986—),男,河南信阳人,博士,讲师,主要研究方向为无刷双馈电机运行理论、建模与仿真、设计和优化。
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贾 磊(1986—),男,河南信阳人,博士,讲师,主要研究方向为无刷双馈电机运行理论、建模与仿真、设计和优化。
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1 南华大学电气工程学院,湖南 衡阳 421001)]), AuthorCompany(id=1190373051083620827, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, xref=2, ext=[AuthorCompanyExt(id=1190373051092009436, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, companyId=1190373051083620827, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 HeLi Industrial Vehicle Co., Ltd, Hengyang, Hunan 421001), AuthorCompanyExt(id=1190373051096203741, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, companyId=1190373051083620827, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 合力工业车辆有限公司,湖南 衡阳 421001)])], figs=[ArticleFig(id=1190373052518072819, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=9nqCHSEgcXJAgRscmV6etQ==, figureFileBig=hrJ9ROPGwXe7EKEKDtiN7g==, tableContent=null), ArticleFig(id=1190373052622930420, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图1, caption=
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转子绕组在72槽8极槽号相位图下的分布, figureFileSmall=75LIwhCJzaMqN2im32fuQQ==, figureFileBig=FdYSYJOIJz0JtLElc5C+uA==, tableContent=null), ArticleFig(id=1190373052899754487, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=hQ4U2tpZf0wnY/J8hlYoyg==, figureFileBig=ooD7EJyZug+atvlvFgsq9A==, tableContent=null), ArticleFig(id=1190373052983640568, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图3, caption=
转子绕组在72槽4极槽号相位图下的分布, figureFileSmall=hQ4U2tpZf0wnY/J8hlYoyg==, figureFileBig=ooD7EJyZug+atvlvFgsq9A==, tableContent=null), ArticleFig(id=1190373053054943737, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=XjVREd5/GFJxlP6BOh5dOw==, figureFileBig=8NlzKK5SQ9YAh7rjAn+MKw==, tableContent=null), ArticleFig(id=1190373053109469690, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图4, caption=
72槽4/8极转子单绕组变极等匝方案, figureFileSmall=XjVREd5/GFJxlP6BOh5dOw==, figureFileBig=8NlzKK5SQ9YAh7rjAn+MKw==, tableContent=null), ArticleFig(id=1190373053163995643, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=UZMA3VNo/V/vdLDqIR0MiQ==, figureFileBig=0xjfRBuII9fLSudj5fi53A==, tableContent=null), ArticleFig(id=1190373053218521596, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图5, caption=
等匝设计方案中磁动势轴线分布示意图, figureFileSmall=UZMA3VNo/V/vdLDqIR0MiQ==, figureFileBig=0xjfRBuII9fLSudj5fi53A==, tableContent=null), ArticleFig(id=1190373053281436157, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=dAcJsi4B1gzPPNwarvTrtQ==, figureFileBig=RUTZvZOdyLRn2dRhIyyguA==, tableContent=null), ArticleFig(id=1190373053344350718, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图6, caption=
不等匝设计方案中磁动势轴线分布示意图, figureFileSmall=dAcJsi4B1gzPPNwarvTrtQ==, figureFileBig=RUTZvZOdyLRn2dRhIyyguA==, tableContent=null), ArticleFig(id=1190373053419848191, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=P5Vj8eNLn7JaNCaIzClqUg==, figureFileBig=6DqbklMz9xd5n6Xq3f3+Hg==, tableContent=null), ArticleFig(id=1190373053516317184, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图7, caption=
连接线上串联线圈, figureFileSmall=P5Vj8eNLn7JaNCaIzClqUg==, figureFileBig=6DqbklMz9xd5n6Xq3f3+Hg==, tableContent=null), ArticleFig(id=1190373053575037441, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=j32v6eKzlXPlgi3v8/ssXg==, figureFileBig=74p3NcMifEN5dAM+7JNkSQ==, tableContent=null), ArticleFig(id=1190373053629563394, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图8, caption=
转子单绕组变极改进方案, figureFileSmall=j32v6eKzlXPlgi3v8/ssXg==, figureFileBig=74p3NcMifEN5dAM+7JNkSQ==, tableContent=null), ArticleFig(id=1190373053688283651, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=wcTVuNO4SicoSmq5cvSlrw==, figureFileBig=C1jPO1aEhUXnsqIukmaQQg==, tableContent=null), ArticleFig(id=1190373053747003908, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图9, caption=
定子控制绕组连接方案, figureFileSmall=wcTVuNO4SicoSmq5cvSlrw==, figureFileBig=C1jPO1aEhUXnsqIukmaQQg==, tableContent=null), ArticleFig(id=1190373053814112773, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=lrwjwWFCyQZ4dqxgmYbRRA==, figureFileBig=XCElE+Q9U3vMps/+jNbFsw==, tableContent=null), ArticleFig(id=1190373053877027334, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图10, caption=
定子功率绕组连接方案, figureFileSmall=lrwjwWFCyQZ4dqxgmYbRRA==, figureFileBig=XCElE+Q9U3vMps/+jNbFsw==, tableContent=null), ArticleFig(id=1190373053944136199, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=JcYUJXK/h0H3sp6qkXsqrA==, figureFileBig=qsNRyQq8gPyLdGniD4OotA==, tableContent=null), ArticleFig(id=1190373054036410888, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图11, caption=
改进方案中转子绕组支路1、2、3的详细接线, figureFileSmall=JcYUJXK/h0H3sp6qkXsqrA==, figureFileBig=qsNRyQq8gPyLdGniD4OotA==, tableContent=null), ArticleFig(id=1190373054099325449, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=m5DiOyFa4xTCuFDReOswbA==, figureFileBig=Sv+hpkwPhsh8jCreXsuxgg==, tableContent=null), ArticleFig(id=1190373054158045706, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图12, caption=
不同方案BDFG有限元模型截面, figureFileSmall=m5DiOyFa4xTCuFDReOswbA==, figureFileBig=Sv+hpkwPhsh8jCreXsuxgg==, tableContent=null), ArticleFig(id=1190373054212571659, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=zx10VcR3IOkcP6pBUujvBA==, figureFileBig=74YFWGJHs7r+HsX0B3CJmA==, tableContent=null), ArticleFig(id=1190373054275486220, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图13, caption=
功率绕组发电电压和谐波分析, figureFileSmall=zx10VcR3IOkcP6pBUujvBA==, figureFileBig=74YFWGJHs7r+HsX0B3CJmA==, tableContent=null), ArticleFig(id=1190373054334206477, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=WZB3KCbk8jkRvJZGVmjXng==, figureFileBig=Dz1BGdRh0+Wq/A1pgahuKg==, tableContent=null), ArticleFig(id=1190373054392926734, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图14, caption=
控制绕组励磁电流波形, figureFileSmall=WZB3KCbk8jkRvJZGVmjXng==, figureFileBig=Dz1BGdRh0+Wq/A1pgahuKg==, tableContent=null), ArticleFig(id=1190373054455841295, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=nOu3TB8O9ZLOaGz8WgRerw==, figureFileBig=gZ2RWKWQs6k9ZwXoQsmhdQ==, tableContent=null), ArticleFig(id=1190373054518755856, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图15, caption=
气隙磁感应强度及谐波分析, figureFileSmall=nOu3TB8O9ZLOaGz8WgRerw==, figureFileBig=gZ2RWKWQs6k9ZwXoQsmhdQ==, tableContent=null), ArticleFig(id=1190373054581670417, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=yZOtr8k8O/RAzA90PWqktw==, figureFileBig=KM0475Tl7EfXJ2DlvkX9Uw==, tableContent=null), ArticleFig(id=1190373054644584978, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图16, caption=
发电机磁感应强度云图和径向电磁力密度波形, figureFileSmall=yZOtr8k8O/RAzA90PWqktw==, figureFileBig=KM0475Tl7EfXJ2DlvkX9Uw==, tableContent=null), ArticleFig(id=1190373054762025491, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=8Da4jOyZqGtgfKrjALtQ6A==, figureFileBig=UYk/qecLRthVjpynDJD2Zg==, tableContent=null), ArticleFig(id=1190373054824940052, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图17, caption=
转子支路1、2、3电流波形, figureFileSmall=8Da4jOyZqGtgfKrjALtQ6A==, figureFileBig=UYk/qecLRthVjpynDJD2Zg==, tableContent=null), ArticleFig(id=1190373054896243221, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=W1aPs2fJ3bMfq4KOAOYbZA==, figureFileBig=vEkVU9F6dg6diOx6dt9sVw==, tableContent=null), ArticleFig(id=1190373054954963478, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图18, caption=
控制绕组线电压随转速变化情况, figureFileSmall=W1aPs2fJ3bMfq4KOAOYbZA==, figureFileBig=vEkVU9F6dg6diOx6dt9sVw==, tableContent=null), ArticleFig(id=1190373055013683735, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=ghR5dTPXV0/ZBPcyOZkrtA==, figureFileBig=oATaDXa2ZtSeF1HY94/+mg==, tableContent=null), ArticleFig(id=1190373055084986904, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图19, caption=
控制绕组三相总有功功率随转速变化情况, figureFileSmall=ghR5dTPXV0/ZBPcyOZkrtA==, figureFileBig=oATaDXa2ZtSeF1HY94/+mg==, tableContent=null), ArticleFig(id=1190373055147901465, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=CbJofb5sWa4RQN1KzpiSgw==, figureFileBig=uPza6vdIsbFft4A4kvn53g==, tableContent=null), ArticleFig(id=1190373055202427418, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=CN, label=图20, caption=
效率随转速变化情况, figureFileSmall=CbJofb5sWa4RQN1KzpiSgw==, figureFileBig=uPza6vdIsbFft4A4kvn53g==, tableContent=null), ArticleFig(id=1190373055261147675, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338911504269528, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 磁动势相位 | 理想情况 | 等匝方案 | 不等匝方案 |
| | 0 | 0 | 0 |
| | 0 | -10 | -0.362 6 |
| | 0 | 10 | 0.362 6 |
| | 120 | 110 | 119.637 4 |
| | 120 | 130 | 120.362 6 |
| | 120 | 120 | 120.000 0 |
| | 240 | 250 | 240.362 6 |
| | 240 | 240 | 240.000 0 |
| | 240 | 230 | 239.637 4 |
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等匝方案和不等匝方案中各支路合成磁动势相位 单位:°
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| 磁动势相位 | 理想情况 | 等匝方案 | 不等匝方案 |
| | 0 | 0 | 0 |
| | 0 | -10 | -0.362 6 |
| | 0 | 10 | 0.362 6 |
| | 120 | 110 | 119.637 4 |
| | 120 | 130 | 120.362 6 |
| | 120 | 120 | 120.000 0 |
| | 240 | 250 | 240.362 6 |
| | 240 | 240 | 240.000 0 |
| | 240 | 230 | 239.637 4 |
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| 极数 | 控制绕组4极 | 功率绕组8极 |
| 绕组系数 | 谐波含量/% | 绕组系数 | 谐波含量/% |
| 4 | 0.690 7 | +100.000 0 | 0.031 5 | -7.528 8 |
| 8 | 0.038 2 | -2.768 6 | 0.837 6 | +100.000 0 |
| 16 | 0.010 3 | +0.373 9 | 0.010 3 | -0.616 6 |
| 20 | 0.023 0 | -0.665 0 | 0.023 0 | +1.096 8 |
| 28 | 0.002 0 | +0.042 2 | 0.044 7 | -1.525 2 |
| 32 | 0.078 6 | -1.422 2 | 0.003 6 | +0.107 1 |
| 40 | 0.065 9 | +0.954 7 | 0.003 0 | -0.071 9 |
| 44 | 0.001 4 | -0.018 8 | 0.031 3 | +0.679 6 |
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转子改进方案谐波含量分析结果
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| 极数 | 控制绕组4极 | 功率绕组8极 |
| 绕组系数 | 谐波含量/% | 绕组系数 | 谐波含量/% |
| 4 | 0.690 7 | +100.000 0 | 0.031 5 | -7.528 8 |
| 8 | 0.038 2 | -2.768 6 | 0.837 6 | +100.000 0 |
| 16 | 0.010 3 | +0.373 9 | 0.010 3 | -0.616 6 |
| 20 | 0.023 0 | -0.665 0 | 0.023 0 | +1.096 8 |
| 28 | 0.002 0 | +0.042 2 | 0.044 7 | -1.525 2 |
| 32 | 0.078 6 | -1.422 2 | 0.003 6 | +0.107 1 |
| 40 | 0.065 9 | +0.954 7 | 0.003 0 | -0.071 9 |
| 44 | 0.001 4 | -0.018 8 | 0.031 3 | +0.679 6 |
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| 参数 | 数值 |
| 定子外径/mm | 620 |
| 气隙长度/mm | 1 |
| 定子内径/mm | 445 |
| 转子内径/mm | 74 |
| 定子槽数 | 84 |
| 转子槽数 | 72 |
| 铁心长度/mm | 520 |
| 转速/(r/min) | 300~700 |
| PW极对数 | 4 |
| CW极对数 | 2 |
| PW额定电压/V | 400 |
| PW额定电流/A | 144.3 |
| PW频率/Hz | 50 |
| CW频率/Hz | -20~20 |
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100 kW BDFG参数
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| 参数 | 数值 |
| 定子外径/mm | 620 |
| 气隙长度/mm | 1 |
| 定子内径/mm | 445 |
| 转子内径/mm | 74 |
| 定子槽数 | 84 |
| 转子槽数 | 72 |
| 铁心长度/mm | 520 |
| 转速/(r/min) | 300~700 |
| PW极对数 | 4 |
| CW极对数 | 2 |
| PW额定电压/V | 400 |
| PW额定电流/A | 144.3 |
| PW频率/Hz | 50 |
| CW频率/Hz | -20~20 |
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| 极数 | 绕组系数 | 谐波含量/% |
| 4 | 0.955 8 | +100.000 0 |
| 20 | 0.195 5 | -4.091 0 |
| 28 | 0.142 9 | +2.135 1 |
| 44 | 0.097 4 | -0.926 8 |
| 52 | 0.086 5 | +0.695 7 |
| 68 | 0.074 7 | -0.460 0 |
| 76 | 0.072 2 | +0.397 8 |
| 92 | 0.072 2 | -0.328 6 |
| 100 | 0.074 7 | +0.312 8 |
| 116 | 0.086 5 | -0.311 9 |
| 124 | 0.097 4 | +0.328 9 |
| 140 | 0.142 9 | -0.427 0 |
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定子控制绕组谐波含量分析
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| 极数 | 绕组系数 | 谐波含量/% |
| 4 | 0.955 8 | +100.000 0 |
| 20 | 0.195 5 | -4.091 0 |
| 28 | 0.142 9 | +2.135 1 |
| 44 | 0.097 4 | -0.926 8 |
| 52 | 0.086 5 | +0.695 7 |
| 68 | 0.074 7 | -0.460 0 |
| 76 | 0.072 2 | +0.397 8 |
| 92 | 0.072 2 | -0.328 6 |
| 100 | 0.074 7 | +0.312 8 |
| 116 | 0.086 5 | -0.311 9 |
| 124 | 0.097 4 | +0.328 9 |
| 140 | 0.142 9 | -0.427 0 |
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| 8 | 0.953 1 | +100.000 0 |
| 16 | 0.010 8 | -0.564 8 |
| 32 | 0.022 0 | +0.577 9 |
| 40 | 0.182 0 | -3.818 9 |
| 56 | 0.123 7 | +1.854 3 |
| 64 | 0.048 7 | -0.638 7 |
| 80 | 0.066 3 | +0.695 3 |
| 88 | 0.066 3 | -0.632 1 |
| 104 | 0.048 7 | +0.393 0 |
| 112 | 0.123 7 | -0.927 1 |
| 128 | 0.182 0 | +1.193 4 |
| 136 | 0.022 0 | -0.136 0 |
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定子功率绕组谐波含量分析
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| 极数 | 绕组系数 | 谐波含量/% |
| 8 | 0.953 1 | +100.000 0 |
| 16 | 0.010 8 | -0.564 8 |
| 32 | 0.022 0 | +0.577 9 |
| 40 | 0.182 0 | -3.818 9 |
| 56 | 0.123 7 | +1.854 3 |
| 64 | 0.048 7 | -0.638 7 |
| 80 | 0.066 3 | +0.695 3 |
| 88 | 0.066 3 | -0.632 1 |
| 104 | 0.048 7 | +0.393 0 |
| 112 | 0.123 7 | -0.927 1 |
| 128 | 0.182 0 | +1.193 4 |
| 136 | 0.022 0 | -0.136 0 |
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