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Design of DC-Link VSCF AC Electrical Power System for the Embraer 190/195 Aircraft

机译：巴西航空工业公司190/195飞机DC-Link VSCF交流电源系统的设计

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A proposed novel DC-Link VSCF AC-DC-AC electrical power system converter for Embraer 190/195 transport category airplane is presented. The proposed converter could replace the existing conventional system based on the CSCF IDGs. Several contemporary production airplanes already have VSCF as a major or backup source of electrical power. Problems existed with the older VSCF systems in the past; however, the switched power electronics and digital controllers have matured and can be now, in our opinion, safely integrated and replace existing constant-speed hydraulic transmissions powering CSCF AC generators. IGBT power transistors for medium-level power conversion and relatively fast efficient switching are used. Electric power generation, conversion, distribution, protection, and load management utilizing VSCF offers flexibility, redundancy, and reliability not available with a conventional CSCF IDG systems. The proposed DC-Link VSCF system for E190/195 delivers several levels of 3-ϕ AC and DC power, namely 330/270/28 VDC and 200/ 115/26 VAC utilizing 12-pulse rectifiers, Buck converters, and 3-ϕ 12-step inverters with D-Y, Y-Y, and Y-D 3-ϕ transformers. Conventional bipolar double-edge carrier-based pulse-width-modulation using three reference AC phase signals and up to 100 kHz triangular carriers are used in a manner to remove all even and many odd super-harmonics. Passive low-pass filters are used to remove higher harmonics. The RL AC loads are active in connection with the synchronous and induction AC motors and also include passive AC loads. The overall power factor exceeded 85%. Total harmonic distortions for voltages and currents are below 5%, thus satisfying the MIL-STD-704F and the IEEE Std. 519 power-quality standards, while avoiding the need for active filters. Several PI and PID controllers that regulate synchronous generator DC excitation and inverter banks were designed and tuned using the continuous–cycle tuning method to offer required performance and stability of the feedback loop. Mathworks’s SimulinkTM software was used for simulation of electrical components and circuits. Several critical scenarios of aircraft operations were simulated, such as go-around, to evaluate the transient behavior of the VSCF system.
机译：提出了一种针对巴西航空工业公司190/195运输类飞机的新型DC-Link VSCF AC-DC-AC电力系统转换器。提出的转换器可以替代基于CSCF IDG的现有常规系统。几架当代量产飞机已经将VSCF作为主要或备用电源。过去，较旧的VSCF系统存在问题。但是，开关电源电子设备和数字控制器已经成熟，现在可以安全集成并替代现有的为CSCF交流发电机供电的恒速液压变速器。使用了用于中级功率转换和相对快速有效开关的IGBT功率晶体管。利用VSCF进行发电，转换，分配，保护和负载管理，可提供传统CSCF IDG系统无法提供的灵活性，冗余性和可靠性。为E190 / 195提议的DC-Link VSCF系统可提供多种级别的3-ϕ AC和DC电源，即使用12脉冲整流器，降压转换器和3-ϕ的330/270/28 VDC和200 / 115/26 VAC。带有DY，YY和YD 3-ϕ变压器的12步逆变器。使用传统的基于双极性双边缘载波的脉宽调制，该调制使用了三个参考AC相位信号和高达100 kHz的三角载波，以消除所有偶数和许多奇数超谐波的方式。无源低通滤波器用于去除高次谐波。 RL AC负载与同步和感应AC电机一起起作用，并且还包括无源AC负载。整体功率因数超过85％。电压和电流的总谐波失真低于5％，因此满足MIL-STD-704F和IEEE Std。 519的电能质量标准，同时避免了对有源滤波器的需求。设计了几种用于调节同步发电机直流励磁和逆变器组的PI和PID控制器，并使用连续周期调谐方法对其进行了调谐，以提供所需的性能和反馈回路的稳定性。 Mathworks的SimulinkTM软件用于电子元件和电路的仿真。模拟了飞机运行的几种关键情况，例如复飞，以评估VSCF系统的瞬态行为。

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