Modulated Model Predictive Control of Two-Stage Matrix Converter for Reducing Common-mode Voltage

Simplified Space-Vector Modulation Strategy for Indirect Matrix Converter With Common-Mode Voltage and Harmonic Distortion Reduction

“…From (15), the CMV magnitude depends on the applied voltage vectors of the inverter modulation, and the CMV peak value is calculated as:…”

“…Rahman et al presented a space-vector modulation (SVM) method to reduce the peak value of the CMV by properly placing the zero vectors in the rectifier modulation, instead of the zero voltage vectors in the inverter modulation [14]. Wang et al suggested a combination of model predictive control (MPC) and SVM to decrease the CMV for the three-phase IMC topology [15]. Unfortunately, the quality of the output waveforms is also deteriorated due to the absence of zero voltage vectors, which is usually known as a trade-off between CMV reduction and output performance.…”

Vector Modulation-Based Model Predictive Current Control with Filter Resonance Suppression and Zero-Current Switching Sequence for Two-Stage Matrix Converter

“…In addition, the variable switching frequency produced by the CMPC increases the difficulty in designing input filter parameters, since the input filter resonance is easier to be inspired [20]. In order to solve these problems, several attempts have been discussed in [18][19][20][21][22][23][24][25][26], where a modulation scheme is added into the CMPC. In [18], the multi-objective modulated model predictive control (M 2 PC) was proposed and tested, where the ac current and the dc-link voltage are controlled in a grid-connected seven-level three-phase cascaded H-bridge back-to-back converter.…”

“…In addition, no experiment verification was involved in this article. In [26], three new strategies of typical M 2 PC for reducing CMV were proposed for TSMC. From the simulation results, although the CMV was reduced, the waveforms of output currents were affected.…”

“…However, the filter configuration presents a resonance frequency and can be excited by the utility due to the potential fifth and seventh harmonics in the ac source (series resonance) and also by the converter itself (parallel resonance). In addition, the input filter resonance is easier to be inspired by the model predictive control, when compared with traditional control methods, leading to highly distorted line-side currents, which are also reflected in the load side because of the direct topology [26][27][28][29][30][31][32][33]. To improve this, one general passive damping method was realized by a damping resistor in parallel with the filter inductor, which is easy to implement.…”