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首页> 外文期刊>IEEE Transactions on Industry Applications >Analytical Design and Autotuning of Adaptive Flux-Weakening Voltage Regulation Loop in IPMSM Drives With Accurate Torque Regulation
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Analytical Design and Autotuning of Adaptive Flux-Weakening Voltage Regulation Loop in IPMSM Drives With Accurate Torque Regulation

机译：具有精确转矩调节的IPMSM驱动器中的自适应磁通弱化电压调节环路的分析设计和自动调整

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摘要

Flux-weakening (F-W) based on feedback voltage regulation is commonly adopted in interior permanent magnet synchronous motor drives. Voltage space vector magnitude is controlled in a closed loop, modifying the current reference, following a value related to the inverter limitations. A stable and fast voltage control allows to operate with lower voltage margin, leading to higher torque versus speed capability. Theoretical analysis and gain adaptation of the F-W regulation loop was reported by Bolognani et al. partially overcoming the difficulties due to the strong nonlinearity of the plant. An approximated closed-form design method was proposed and refined by Bedetti et al. This allowed the application of the algorithm to drives where autotuning is needed, ensuring stability and dynamical performances. A fundamental enhancement is introduced in this article, namely the use of a speed regulator with explicit torque reference output. An advantage of this technique is that the speed loop becomes linear in the whole operating range and an accurate control of machine torque is possible. Thanks to a novel gain adaptation for the voltage regulator, the F-W behavior is decoupled from the speed control response at speed steady-state (at constant or slowly changing torque), improving performance of the overall drive control. Adoption of this novel method allows smooth operation with invariant dynamical behavior of both the speed and F-W control loops. Extensive simulations and experimental tests are reported to prove the validity of the proposal. A sensorless operation of the drive system has also been considered in the tests to further validate the proposed solution.
机译：内部永磁同步电动机驱动器中通常采用基于反馈电压调节的弱磁通（F-W）。电压空间矢量幅度在闭环中进行控制，并根据与逆变器限制有关的值修改电流基准。稳定且快速的电压控制允许在较低的电压裕度下运行，从而实现更高的转矩与速度能力。 Bolognani等人报道了F-W调节回路的理论分析和增益适配。部分克服了由于工厂强烈的非线性带来的困难。 Bedetti等人提出并完善了一种近似的封闭形式设计方法。这允许将该算法应用于需要自动调整的驱动器，从而确保稳定性和动态性能。本文介绍了一项基本改进，即使用带有显式转矩参考输出的速度调节器。该技术的优势在于，速度环在整个工作范围内都呈线性，并且可以精确控制机器转矩。得益于电压调节器的新型增益适配，F-W特性在速度稳定状态（恒定或缓慢变化的转矩）下与速度控制响应分离，从而改善了整个驱动控制的性能。采用这种新颖的方法可以使速度和F-W控制回路的动力学特性保持平稳运行。据报道，大量的模拟和实验测试证明了该建议的有效性。测试中还考虑了驱动系统的无传感器操作，以进一步验证所提出的解决方案。

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