Space-Vector-Quantized Dithered Sigma–Delta Modulator for Reducing the Harmonic Noise in Multilevel Converters

Jacob, Biji; Baiju, M. R.

doi:10.1109/tie.2014.2361491

Cited by 25 publications

(16 citation statements)

References 24 publications

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“…Several variants of the SDM technique are widely used in precision A/D and D/A converters [1,4,5], audio class-D amplifiers [6][7][8], including the current-mode operation of its power stage [9], special-purpose measurement techniques [10], current measurement for motor control [11], and many other areas of industrial electronics [12]. This technique can also be used to control many types of power electronics devices, including matrix converters [13], commonly used converters for LED lighting [14], multilevel converters [15], and converters for power systems with renewable energy sources [16]. Most of these SDMs are discrete-time systems, i.e., systems applying a quantization of signals over time (e.g., [1,2]).…”

Section: Introductionmentioning

confidence: 99%

Power Electronics Programmable Voltage Source with Reduced Ripple Component of Output Signal Based on Continuous-Time Sigma-Delta Modulator

Gwóźdź¹

2021

Energies

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In this work, an idea of a wideband, precision, power electronics programmable voltage source (PVS) is presented. One of the basic elements of the converter, the control section, contains a continuous-time sigma-delta modulator (SDM) with a pair of interconnected complementary comparators, which represents a new approach. In this case, the SDM uses comparators with a dynamic hysteresis loop (DHC) that includes an AC circuit rather than an R-R network. Dynamic hysteresis is a very effective way of eliminating parasitic oscillation during the signal transition at the input of the comparator; it also affects the frequency characteristics and, especially, the phase properties of the comparator, and this phenomenon is exploited in the proposed converter. The main disadvantage of all pulse-modulated converters is the presence of a ripple component in the output voltage (current), which reduces the quality of the output signal and may cause high-frequency disturbances. A basic feature of PVS is a lower RMS value for the pulse modulation component in the output voltage of the converter, compared to the typical value. Another important feature of the proposed converter is the ability of precise mapping of the output voltage to the reference (input) signal. The structure of the control circuit is relatively simple—no complex, digital components are used. Due to the high frequency of the SDM output bit-stream, the simulation model of the power stage of PVS is based on the power modules with gallium-nitride field effect transistors (GaN FETs). The work discusses the rules of PVS operations and the results from PVS simulation model studies as well as highlights the possible application fields for systems with a PVS.

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Section: Introductionmentioning

confidence: 99%

Power Electronics Programmable Voltage Source with Reduced Ripple Component of Output Signal Based on Continuous-Time Sigma-Delta Modulator

Gwóźdź¹

2021

Energies

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“…As an efficient A/D conversion method, the Δ∑ modulator can be embedded into many industrial applications, e.g., [8,9,10,11]. Along with the development of the Microelectromechanical Systems (MEMS), the Δ∑ modulator-based gyroscopes and accelerometers may be used in many applications.…”

Section: Introductionmentioning

confidence: 99%

Design of a 1-bit MEMS Gyroscope using the Model Predictive Control Approach

Xie

Bai

et al. 2019

Sensors

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In this paper, a bi-level Delta-Sigma modulator-based MEMS gyroscope design is presented based on a Model Predictive Control (MPC) approach. The MPC is popular because of its capability of handling hard constraints. In this work, we propose to combine the 1-bit nature of the bi-level Delta-Sigma modulator output with the MPC to develop a 1-bit processing-based MPC (OBMPC). This paper will focus on the affine relationship between the 1-bit feedback and the in-loop MPC controller, as this can potentially remove the multipliers from the controller. In doing so, the computational requirement of the MPC control is significantly alleviated, which makes the 1-bit MEMS Gyroscope feasible for implementation. In addition, a stable constrained MPC is designed, so that the input will not overload the quantizer while maintaining a higher Signal-to-Noise Ratio (SNR).

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“…In Ref. , a digital control scheme based on dithered sigma–delta modulation was proposed to suppress the harmonic spikes in three‐phase multilevel VSCs.…”

Section: Introductionmentioning

confidence: 99%

Harmonic spectrum analysis of the output voltage and grid‐side filter design for three‐level voltage‐source converters

Jiang

2017

IEEJ Transactions Elec Engng

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Because of the complex arithmetic computation of the traditional three‐level space vector modulation (SVM), its hardware implementation is difficult to achieve. Moreover, the normal approach of acquiring the output voltage harmonic is sensitive to the simulation step, measurement accuracy, system noise, etc. This paper proposes a new method for analyzing the voltage harmonic spectrum of the three‐level converter. Furthermore, the minimum value of the inductance of the grid‐side filters is designed on this basis. First, the formulas of the duty cycle and the modulation waveform of the three‐level SVM algorithm are easily derived using some simple linear calculations under the 120° coordinate. Then, considering the characteristics of the digital circuits, the harmonic components of the output voltage are calculated using Fourier analysis. Third, a precise analytical design of the minimum inductance value of grid‐connected converters with LCL and L input filters is presented. Finally, the validity of this approach is verified by using experimental results. © 2017 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Space-Vector-Quantized Dithered Sigma–Delta Modulator for Reducing the Harmonic Noise in Multilevel Converters

Cited by 25 publications

References 24 publications

Power Electronics Programmable Voltage Source with Reduced Ripple Component of Output Signal Based on Continuous-Time Sigma-Delta Modulator

Power Electronics Programmable Voltage Source with Reduced Ripple Component of Output Signal Based on Continuous-Time Sigma-Delta Modulator

Design of a 1-bit MEMS Gyroscope using the Model Predictive Control Approach

Harmonic spectrum analysis of the output voltage and grid‐side filter design for three‐level voltage‐source converters

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