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Practical Wide-speed-range Sensorless Control System for Permanent Magnet Reluctance Synchronous Motor Drives via Active Flux Model

机译:适用于通过磁通量模型驱动的永磁磁阻同步电动机的实用宽速无传感器控制系统

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摘要

This article introduces a control strategy to obtain near-maximum available torque in a wide speed range with sensorless operation via the active flux concept for permanent magnet-reluctance synchronous motor drives. A new torque dq current reference calculator is proposed, with reference torque limited by the torque/speed envelope and by maximum current constraint. This solution approximates the maximum torque per ampere below base speed and also in the flux-weakening region, where voltage limitations impose constraints on the allowable dq currents with less computational effort. Comprehensive digital simulation results (1-6000 rpm) and experimental results (50-3000 rpm at low inverter available DC voltage of 12 V_(dc) instead of 48 V_(dc)) demonstrate the effectiveness of the proposed sensorless control strategy in a wide speed range, with stable and reliable operations up to a speed equal to eight times the machine base speed (constant power speed range = 8).
机译:本文介绍了一种控制策略,该方法通过永磁磁阻同步电动机驱动器的有效磁通量概念,在无传感器运行的情况下,在宽速度范围内获得接近最大的可用转矩。提出了一种新的转矩dq电流参考计算器,其参考转矩受转矩/速度包络线和最大电流限制所限制。该解决方案近似于低于基本速度的每安培最大转矩,并且在磁通弱化区域也是如此,在该区域中,电压限制以较小的计算量就可允许的dq电流施加了约束。全面的数字仿真结果(1-6000 rpm)和实验结果(在低逆变器可用直流电压12 V_(dc)而不是48 V_(dc)的情况下为50-3000 rpm)证明了所提出的无传感器控制策略的有效性速度范围,稳定可靠的运行速度可达机器基本速度的八倍(恒定功率速度范围= 8)。

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