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摘 要： 给出了一种无传感器180度直流变频压缩机驱动电流采样的优化方法，采用三路A/D采样，对各相电路信息进行分区利用的原理，实现压缩机各相电流的准确重构，用于直流变频压缩机的FOC控制系统，可以解决目前行业采用的电流采样方法中的多相 不足，避免了电流采样中存在的采样盲区问题，不但提高了电流采样的精度，提高了变频控制的准确性和稳定性，提高了变频空调可靠性和效率，而且提高了对母线电压的利用率，扩了变频空调的频率控制范围。最后通过实践测试证明该控制方法的有效性，该方法在180度直流变频压缩机驱动方面有重要的应用价值。 关键词： 180度直流变频；FOC；采样电阻；采样盲区；调制率；PWM调制 180-degree sensorless DC inverter current sampling optimization method Liu Junjie Guangdong Midea Air Conditioner Domestic Division R nbsp; Abstract: This paper presents a 180-degree sensorless DC inverter compressor drive current sampling optimization method, using three-way A / D sampling circuit for each phase using the principle of geographical information to achieve compressor each phase current and accurate re - structure, and the FOC for the DC inverter compressor control system that can address the current industry to adopt the current lack of multi-phase sampling methods, avoiding the current sampling blind spots exist in the sample, not only improved the precision of current sampling to improve the frequency the control accuracy and stability, improve the reliability and efficiency of inverter air conditioner, but also increased its bus voltage utilization, expansion of the frequency of the inverter air-conditioning control. The final adoption of the practice test to prove the effectiveness of the control method, the method in 180-degree DC inverter compressor drives has important application value. 参考文献： [1] 叶斌 电力电子应用技术 清华大学出版社 (2006-05出版) [2] 陈国呈 PWM逆变技术及应用 中国电力 (2007-07出版) [3] 唐任远 现代永磁电机理论与设计 机械工业出版社(1997出版) [4] NEC培训资料 基于one shunt电流检出的无传感器电机驱动系统（2004年） [5] Dae-woong Chung , and Seung-Ki Sul, Minimum-Loss Strategy for Three-Phase PWM Rectifier ,IEEE Transactions on Industrial Electronics,Vol,46,NO.3,June,1999