Modulation Strategy for Multi-Phase Matrix Converter with Common Mode Voltage Elimination and Adjustment of the Input Displacement Angle

Abstract

In the last several years, thanks to the development and continuous improvement of semiconductor switching elements, and the simultaneous increase in interest in multi-phase drives, the investigation into constructing multi-phase converters has been growing. The matrix converter (MC) is considered to be one of the contenders for use in the multi-phase drive. In the context of using MC in the drive, it is expected to eliminate the common mode voltage (CMV). Another important problem is the ability to correct the input displacement angle to ensure the operation of the MC with unity input power factor. The purpose of the article is to present an MC modulation strategy that implements both CMV elimination and input displacement angle adjustment. Analytical and simulation analyses of the strategy, in application to three-to-multi-phase MC is presented. The suggested modulation strategy in applying to three-to-multi-phase MC is implemented in ATP-EMTP (Alternative Transients Program-ElectroMagnetic Transients Program) software. Simulation results are provided for a three-to-three-phase three-to-six-phase and three-to-nine-phase MC. The proposed modulation strategy is validated using an experimental approach.

Harmonic Analysis and Attenuation Strategy for a Two-Stage Matrix Converter Fed by Dual-Inverter Based on Pulse Barycenter Method

“…First, the reference voltage of the inverter is obtained, and the angles θ 1 * and θ 2 * of the reference voltage are obtained by PLL. The duty cycles for the inverter d αInv.1 , d βInv.1 , d αInv.2 , and d βInv.2, and the duty cycles of zero vectors d 0Inv.1 and d 0Inv.2 can be calculated according to the angle of reference voltage and (7). After obtaining the duty cycles, the current harmonic contents under different x and y are compared by use of ( 27) and the optimal pulse is obtained.…”

“…The block diagram of the duty-cycle correction strategy is shown in Figure 8 the reference voltage of the inverter is obtained, and the angles θ1* and θ2* of the ref voltage are obtained by PLL. The duty cycles for the inverter dαInv.1, dβInv.1, dαInv.2, and and the duty cycles of zero vectors d0Inv.1 and d0Inv.2 can be calculated according to the of reference voltage and (7). After obtaining the duty cycles, the current harmonic co under different x and y are compared by use of ( 27) and the optimal pulse is ob According to ( 17) and ( 18) and the pulse distribution coefficient, the corrected duty of zero vectors can be obtained.…”

“…Aiming at the harmonic problem of TSMC, the method of Fourier transform analysis is usually utilized. Specifically, the mathematical model about load-side voltage is established by combining the pulse width modulation (PWM) principle with the transfer function firstly, then analytical expression of each harmonic component is obtained by use of mathematic derivation and Fourier transform [4][5][6][7][8]. For example, reference [9] constructs the constraint equation according to the conduction angle in each modulation period and obtains the formula of the amplitude of harmonics by use of Fourier transform.…”

Voltage and frequency control of microgrid in presence of micro-turbine interfaced to matrix converter

“…This section presents an exposition of the research findings, accompanied by a thorough analysis and exhaustive examination. The findings can be visually represented through figures, graphs, tables, and other visual aids, facilitating the reader's comprehension [14], [15]. The conversation can be divided into multiple sub-sections.…”

On a Novel Topology of Matrix Converter Applied to Accelerator DC Power Supply

“…Input current can be improved by using the current SVM, and output current can keep reliable track of instruction current by using PI regulation. e method is simple and with commendable robustness [30][31][32].…”