【技术】解析如何实现无霍尔无刷电机的换向原理
在过去的几年中,大多数制造商都选择了霍尔无刷电机,但霍尔直流无刷电机需要匹配更复杂的霍尔效应传感器,对电机的可靠性和制造过程都有不利的因素,此外还有安装问题,如果安装不精确,会造成电机性能问题。霍尔无刷电机运行平稳,启动可靠。它不直接使用转子霍尔效应传感器,但需要转子位置信号来控制电机换向,转子位置信号检测主要利用检测定子电压、电流等来估计转子位置。常用的方法是反电动势(EMF),用于检测电机的反电动势(EMF)以获得转子位置信号。本文FULLING MOTOR就如何实现无霍尔无刷电机的换向原理进行说明。
以下是无刷电机反电势检测方法的简要介绍:
1.反电动势过零检测方法
通过检测反向反电势的过零点,可以获得转子的几个关键位置,从而实现霍尔效应传感器无刷电机的换向控制。
2.反电动势三次谐波法
滤波后的三次谐波通过方波直接送入DSP的I/O端口,方波通过电压过零比较器反映三次谐波的相位信息。
3.反激二极管
转子的位置通过检测反激二极管的接通和断开状态来确定,反激二极管与逆变桥功率开关管反向并联。
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本文由Vicky转载自Fulling Motor官网,原文标题为:如何实现无霍尔无刷电机的换向原理?,本站所有转载文章系出于传递更多信息之目的,且明确注明来源,不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
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【电机】一体式驱动器外转子无刷电机iBLD45W及iBLD60W系列,采用新型的PWM控制技术,具有转度高、振动小、噪声低等优点
FULLING MOTOR富兴机电自主研发高性价比一体式驱动器外转子无刷电机。目前市场上最畅销的分别为iBLD45W及iBLD60W两个系列。该电机采用32位专用电机控制芯片,集成度高、体积小、拥有完善的保护措施。同时,该电机采用新型的PWM控制技术,使无刷电机运行具有转度高、振动小、噪声低、平稳性好等优点。
Fulling Motor(富兴机电)无刷驱动器&步进驱动器选型指南
描述- 常州富兴机电有限公司是一家中、德、瑞合资企业, 成立于2001年,位于中国常州。专业生产各类步进电机,无刷电机,伺服电机及相关的驱动器,年生产各类电机550万台。产品广泛应用于自动化,机器人,纺织,印刷,包装,医疗器械,物流,通信,家电,汽车等行业,远销美国,德国,瑞士,意大利,法国,丹麦,荷兰等30多个国家和地区。
型号- BLD4830TC,IFD42 /R/C/E-47-V1.2-XXX,BLD2403TC,FD系列,CL系列,IFD42,FD860,ICL,IFD系列,BLD4815T/SR/C/C2-V1.2-XXX,BLD3610TC,CL2505 /R/C/E-V1.2-XXX,BLD4815TC,IFD57,FD556,ICL42 /R/C/E-47E2-V1.2-XXX,BLD系列,IFD,FD430,CL2505,CL2608,FD430 /R/C/E-V1.2-XXX,IBLD42N /R/C/E-47 /-H-S-V1.2-XXX,CL2205,ICL42,ICL系列,BLD
富兴机电携直流无刷电机、伺服电机、步进电机及精密型行星齿轮箱等产品亮相2023年中国(广州)国际物流装备与技术展览会
2023年中国(广州)国际物流装备与技术展览会(LET 2023)将于5月18-20日在广州·广交会展馆D区盛大举行。富兴机电将携直流无刷电机和伺服电机,步进电机及精密型行星齿轮箱等产品亮相本次展会,为广大客户创造价值,提供最优的行业解决方案。
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可定制风扇尺寸范围:30mm~120mm;转速:2000~30000RPM;噪音≥17dB。最大风量范围:3.28~262.39CFM;最大风压范围:1.25~110.83mmH2O;
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可定制电机的连续转矩范围1Nm至2000Nm,峰值转矩3Nm至5500Nm,电机延长线长度、变换编码器类型。
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