Abstract
Power electronic matrix converters are converters carrying out just one solitary transitional stage. AC-AC conversion automatism in matrix converters is attained through the exploitation of bidirectional controllable power switches associated with a structural matrix. The indirect matrix converter is an alternating preference to the direct matrix converter embodied by AC-DC converter and DC-AC inverter. In this paper, an assemblage of Pulse Width Modulation categories is used to control the dual stages of IMC. AC-DC converter is modulated through the well-known space vector algorithm, while DC-AC inverter is modulated through a novel algorithmic conception referred to as the digital scalar algorithm. Comparative analysis between the conventional DSVPWM modulation and the novel proposed modulation technique is escorted demonstrating that the latter is facilely comprehended and simply put into real-time practice. This paper comes forward with digital signal processor real-time enforcement, conceived for indirect matrix converter. Uniting both original approaches into one topological system entrained a significant decrease of 38% in real-time computation assesses. Throughout the paper, it is well proven that the proposed solution results in high-quality input/output waveforms, and averts from servicing supplementary devices that trigger silicon devices' gates. Numerous experimental enquires within the delivered research reveal advantageous aspects of the contemporary approach from overall simplicity to entire effectiveness.
Highlights
Matrix converters are AC-AC power topologic converters that receive electrical signals characterized by fixed voltage, magnitude, and frequency from the input AC grid source
As for the originality of the real-time implementation, simplicity rules the situation owing to the fact that 1 digital signal processor (DSP) controller chip is employed avoiding any field-programmable gate array (FPGA)
When it comes to computing the duty cycles of the inverter stage, absolute synchronization between both stages must be conducted to accomplish the desired results reflected in output voltage and input current waveforms
Summary
Matrix converters are AC-AC power topologic converters that receive electrical signals characterized by fixed voltage, magnitude, and frequency from the input AC grid source. Their role is to deliver electrical signals characterized by variable voltage, magnitude, and frequency to the output AC load. MODULATION OF THE GRID-CONNECTED RECTIFIER STAGE OF THE IMC As it is clear, the main electrical power is delivered from the grid, which is considered the input to the topologic rectifier. Equation (10) is a general formula for γi varying the sector number ki
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