Predictive Control of AC/AC Matrix Converter

2017 ◽  
Vol 8 (4) ◽  
pp. 1932
Author(s):  
Siti Hajar Yusoff ◽  
Nur Shahida Midi ◽  
Sheroz Khan ◽  
Majdee Tohtayong
Keyword(s):  
Predictive Control ◽  
Output Voltage ◽  
Experimental Studies ◽  
Matrix Converter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Current Controller ◽  
Voltage Controller ◽  
Low Pass ◽  
Switching State

<span>This work investigates the usage of Model Predictive Control (MPC) for a three phase conventional matrix converter with low pass filter at the input and output side. The conventional matrix converter has 3 input and 3 output which gives 27 switching state. From this design, a MPC is incorporate to control the output voltage and the input currents for all the phases. The design of the proposed controller is based on the input current controller and output voltage controller with load observer.  The proposed MPC using cost function will select the minimized switching state to be applied to next switching. This gives a sinusoidal output voltages and input currents. A simulation and experimental studies are presented to validate the proposed control scheme.</span>

scholarly journals Low-Cost Position Sensorless Speed Control of PMSM Drive Using Four-Switch Inverter

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 741 ◽  
Author(s):  
Omer Kivanc ◽  
Salih Ozturk
Keyword(s):  
Control Method ◽  
Low Cost ◽  
Experimental Studies ◽  
Speed Control ◽  
Estimation Algorithm ◽  
Phase Lock Loop ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Current Controller ◽  
Position Sensorless

A low-cost position sensorless speed control method for permanent magnet synchronous motors (PMSMs) is proposed using a space vector PWM based four-switch three-phase (FSTP) inverter. The stator feedforward d q -axes voltages are obtained for the position sensorless PMSM drive. The q-axis current controller output with a first order low-pass filter formulates the rotor speed estimation algorithm in a closed-loop fashion similar to PLL (Phase Lock Loop) and the output of the d-axis current controller acts as the derivative representation in the stator feedforward voltage equation. The proposed method is quite insensitive to multiple simultaneous parameter variations such as rotor flux linkage and stator resistance due to the dynamic effects of the PI current regulator outputs that are used in the stator feedforward voltages with a proper value of K gain in the q-axis stator voltage equation. The feasibility and effectiveness of the proposed position sensorless speed control scheme for the PMSM drive using an FSTP inverter are verified by simulation and experimental studies.

scholarly journals Harmonic Suppression Strategy in Single-phase SPWM Based on Mixed Integer Nonlinear Programming

2019 ◽  
Vol 13 (5) ◽  
pp. 22
Author(s):  
Lubin Wu ◽  
Ziquan Liang ◽  
Weihua Li ◽  
Xiaoteng Wang
Keyword(s):  
Output Voltage ◽  
Single Phase ◽  
Mixed Integer ◽  
Harmonic Suppression ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Integer Nonlinear Programming ◽  
Low Pass ◽  
Harmonic Components ◽  
Suppression Strategy

In single-phase bipolar SPWM inverter circuit, the output voltage contains high content of harmonic components. To solve this problem, we build a model of output voltage in single-phase SPWM bipolar inverter based on SPWM theory and Fourier series theory. Through theoretical analysis, calculation and plotting, we work out the distribution of harmonic in output voltage, investigate the relationship between amplitude modulation (AM) depth and harmonic components and finally determine a proper amplitude modulation depth to efficiently reduce harmonic components. To further reduce harmonic components of output voltage, we use LC low-pass filter. Then, based on the mathematical model of the filter and the distribution law of harmonics, we establish a mixed integer nonlinear programming to fully suppress harmonics and reduce switching losses. After searching for two times based on genetic algorithm, we work out the best frequency-modulation ratio and LC low-pass filter parameter. Finally in simulation, total harmonic distortion is reduced from 213.47 percent to 0.16 percent after harmonic suppression strategy implemented. The result has proved the effectiveness of the harmonic suppression strategy we applied, which can be used as a reference for output voltage harmonic elimination in single-phase SPWM inverter.

scholarly journals A new design of high output voltage rectifier for rectenna system at 2.45 GHz

2019 ◽  
Vol 13 (1) ◽  
pp. 226 ◽  
Author(s):  
Abdellah Taybi ◽  
A. Tajmouati ◽  
J. Zbitou ◽  
A. Errkik ◽  
M. Latrach ◽  
...  
Keyword(s):  
Output Voltage ◽  
Schottky Diodes ◽  
Pass Filter ◽  
Low Pass Filter ◽  
High Conversion Efficiency ◽  
Dc Power ◽  
Measurement Results ◽  
Low Pass ◽  
High Output Voltage ◽  
High Output

<p>This paper deals with the design and achievement of a novel microstrip rectifier with high conversion efficiency and output voltage. Firstly, we have designed a rectifier based on HSMS2820 Schottky diodes by using a series topology to convert the electromagnetic energy into DC power. Then, a stepped-impedance low pass filter was implemented to filter the unwanted harmonics generated by the non-linear Schottky diode. Both of the structures have been simulated and fabricated on an FR4 substrate with dielectric permittivity constant 4.4, thickness of 1.6 mm and loss tangent of 0.025. Good performances were confirmed throughout the measurement results and an interesting output voltage was observed.</p>

scholarly journals Cascade-Type Pole-Zero Cancellation Output Voltage Regulator for DC/DC Boost Converters

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3824
Author(s):  
Sung Hyun You ◽  
Koo Bonn ◽  
Dong Soo Kim ◽  
Seok-Kyoon Kim
Keyword(s):  
Output Voltage ◽  
Closed Loop ◽  
Active Damping ◽  
Voltage Regulator ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Boost Converters ◽  
System A ◽  
Low Pass ◽  
Cascade Structure

This paper presents a novel output voltage regulator in the cascade structure under the consideration of both the parameter and load uncertainties. It leads to the first-order closed-loop inner and outer loop dynamics in the low-pass filter form by the pole-zero cancellation through the active damping injection, which is the main contribution of this study. Moreover, it is proved that the active damping injection level determines the disturbance rejection capability of the closed-loop system. A 3-kW DC/DC boost converter confirms the actual advantages from these two contributions.

Design of Programmable Wideband Low Pass Filter with Continuous-Time/Discrete-Time Hybrid Architecture

2017 ◽  
Vol E100.C (10) ◽  
pp. 858-865 ◽  
Author(s):  
Yohei MORISHITA ◽  
Koichi MIZUNO ◽  
Junji SATO ◽  
Koji TAKINAMI ◽  
Kazuaki TAKAHASHI
Keyword(s):  
Discrete Time ◽  
Continuous Time ◽  
Hybrid Architecture ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass
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