Green energies and electric mobility are considered exciting solutions to help reduce the emissions of greenhouse gases into the atmosphere. This scenario has significantly promoted the use of electric drives; consequently, higher technical requirements are assumed as mandatory. Focusing on the required high-performance electric drives, the direct control of power converters and the use of integrated modulators, namely, control techniques that avoid the pulse-width modulation stage, can be an attractive alternative to conventional linear controllers. For example, Model Predictive Control (MPC) presents inherent flexibility in defining control objectives, while Direct Torque Control (DTC) provides a fast dynamic response. Unfortunately, unacceptable harmonic distortion can appear in the system if single control action is applied per control cycle. This scenario promotes a higher current ripple in three-phase electric drives when a control scheme using a standard integrated modulator is implemented. The situation is even worse when multiphase drives are used since several orthogonal subspaces need to be regulated with a single control action. In addition, the characteristic low value of the equivalent impedance of the secondary subspaces may lead to enormous harmonic currents. Considering the previous scenario, although the dynamic response is very fast in direct controllers (control scheme based on integrated modulators), these control strategies could be discarded due to their high harmonic distortion. Fortunately, the disadvantages of direct control strategies can be mitigated by using enhanced integrated modulators, such as multi-vector solutions as control actions. On the other hand, as these control techniques’ performance is founded on the nature of the available voltage vectors, the use of some specific electric drives, such as symmetrical six-phase machines, can allow taking advantage of their desirable skills.

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关于电力驱动集成控制和调制的客座编辑特刊

绿色能源和电动汽车被认为是有助于减少温室气体排放到大气中的令人兴奋的解决方案。这一场景极大地促进了电力驱动的使用；因此，更高的技术要求被认为是强制性的。专注于所需的高性能电力驱动、功率转换器的直接控制和集成调制器的使用，即避免脉宽调制阶段的控制技术，可以成为传统线性控制器的有吸引力的替代方案。例如，模型预测控制 (MPC) 在定义控制目标方面具有固有的灵活性，而直接转矩控制 (DTC) 提供快速动态响应。不幸的是，如果每个控制周期应用单一控制动作，系统中可能会出现不可接受的谐波失真。当实施使用标准集成调制器的控制方案时，这种情况会导致三相电力驱动器中出现更高的电流纹波。当使用多相驱动器时情况更糟，因为需要通过单个控制动作来调节多个正交子空间。此外，二次子空间的等效阻抗的特性值较低，可能会导致巨大的谐波电流。考虑到前面的情况，尽管直接控制器（基于集成调制器的控制方案）的动态响应非常快，但由于它们的高次谐波失真，这些控制策略可能会被丢弃。幸运的是，直接控制策略的缺点可以通过使用增强的集成调制器来减轻，例如作为控制动作的多矢量解决方案。另一方面，