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首页> 外文会议>International Conference on Microelectronics >Analysis of non-communication based control schemes for parallel operation of three phase voltage source inverters with a stiff grid
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Analysis of non-communication based control schemes for parallel operation of three phase voltage source inverters with a stiff grid

机译：刚性电网三相电压源逆变器并联运行的非通信控制方案分析

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This paper presents different control schemes for parallel operation of voltage source inverters with stiff grid depending on droop control based technique. Methods are analyzed and compared for presenting a new hybrid control scheme with highly improved dynamic response regardless of the grid parameters uncertainties and without communication link among interconnected units. Decoupling control of active and reactive power producing null steady state error is obtained through an adaptive droop controller. Meanwhile, feed-forward decoupling for filter current is introduced to enhance system stability and improve the power quality. Furthermore, system oscillatory response is damped via an enhanced voltage controller which relies on virtual impedance (VI) angle. The final scheme has no tradeoff between system stability and output voltage regulation, in contrast with conventional droop control.
机译：本文提出了基于下垂控制技术的具有刚性网格的电压源逆变器并联操作的不同控制方案。对方法进行了分析和比较，以提出一种新的混合控制方案，无论电网参数的不确定性如何，而且各互连单元之间都没有通信链接，这种混合控制方案的动态响应大大提高。通过自适应下降控制器获得有功和无功产生零稳态误差的解耦控制。同时，引入了用于滤波电流的前馈去耦，以增强系统稳定性并改善电能质量。此外，系统振荡响应通过增强的电压控制器得到衰减，该电压控制器依赖于虚拟阻抗（VI）角。与传统的下垂控制相比，最终方案在系统稳定性和输出电压调节之间没有权衡取舍。

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