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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
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使用无感BLDC电机时有哪些注意事项？
使用无感BLDC电机时，需要谨慎对待低速旋转或负载波动较大的应用。
无感驱动不使用传感器（霍尔元件或霍尔IC）来检测转子位置，而是监测电机反电动势的变化并预测驱动过程中电机通电时间。
但是，反电动势与转速成正比。如图2所示，如果电机转速低，反电动势也低。如果反电动势不足，则难以实现稳定的无感驱动，容易导致运行不稳定。
此外，无感驱动也是通过检测反电动势的变化并预测通电时间来驱动电机。但是，如果电机的转速因负载波动而发生显著变化，则所需通电时间和预测时间之间的差异就会变大。因此，正常通电的电机可能会失步（无法旋转）。
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