| 摘要:本文介绍了一种基于同步电机无传感器的大功率电动汽车控制器的设计方案。硬件上，系统以国际整流公司的电机专用控制芯片IRMCF341为基础，采用以IR21864为驱动芯片的三个半桥的驱动方式来驱动电机的三相输出；在控制算法上，采用了磁链估计算法实现电机无传感器控制、三段式低速启动策略启动电机。此外，由于本系统的输出功率很大，达到了1－4kW ，很难找到符合要求的功率模块，所以采用了以IRFP4321为分立元件组成逆变器的控制方式来达到功率输出的要求。实验结果表明，该系统可在电机调速范围内进行高精度的速度和磁链估计，具有良好的动静态性能。 |
| 关键词: IRMCF341，磁链估计算法，低速启动策略，大功率 |
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| Design of wireless sensorr electric car controller based on IRMCF341 |
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| Abstract:This paper introduced a kind of sensorless electric car controller design scheme based on PMSM。On the hardware, the scheme used the special motor control chip IRMCF341 which belongs to the company of international rectifier as a basic, adopted the drive chip IR21864 to drive the motor’s three-phase output with the drive method of three half bridge; On the control algorithm, using flux estimation algorithm for motor speed sensorless control, low speed startup strategy of three stage for motor start. In addition, because the output power of this system is high, which reached 1-4KW, it is difficult to find a power module than can meet the requirement, for this reason, the system adopted separation component which composed the inverter to achieve the requirement of output power. Experimental results show that this system can be adjusted the speed and estimated magnetic flux in the range of motor speed, and has good dynamic and static performance. |
| Key words: IRMCF341 , flux estimation algorithm, low speed startup strategy, high power |