无刷直流电机控制解决方案的新进展

　　无刷直流电机控制解决方案的新进展

　　无刷直流电机正迅速成为要求高可靠性、高效率和高功率体积比的应用的自然选择。电机提供了广泛的速度范围内的扭矩和共享类似的扭矩和速度性能曲线特性刷电机（虽然拉丝电机提供更多的扭矩从静止）。

　　一种无刷直流电动机从消除传统直流电动机换电刷中获得了显著的可靠性。电刷磨损，降低了电机的性能，最终不得不更换。相反，当在额定参数下运行时，BLDC电机的寿命可以超过10000小时或更多。这种长寿，以及随后的维修和备件成本的减少，可以抵消比传统的电机更高的初始成本的电动机。

　　BLDC motors are now making their way into the most cost-conscious applications. For example， in the automotive sector， the use of BLDC motors is skyrocketing. Car makers are particularly attracted by the motor’s efficiency at converting electrical energy in mechanical work， which helps lower the demand on the vehicle’s power system （Figure 1）。 According to analyst IMS research， 600 million BLDC motors will be used in internal combustion engine-powered light vehicles by 2018 compared with 200 million units in 2011. （Larger versions of BLDC motors are already common in electric and hybrid vehicles.）