scholarly journals Modified PWM Technique for Harmonic Reduction

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Alireza Hoseinpour ◽  
Reza Ghazi
Keyword(s):  
Control Strategy ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Reference Signal ◽  
Space Vector Modulation ◽  
Shunt Active Filter ◽  
Harmonic Reduction ◽  
Reference Signals ◽  
Simulation Results ◽  
Vector Modulation

This paper presents a Shunt Active Filter (SAF) based on the Variable Index Pulse Width Modulation approach. In the proposed method of Pulse Width Modulation (PWM), the triangular wave is derived by integration of the reference signals. This method introduces two basic advantages; the first one is that the triangular signal contains the information of the signal to be obtained in output and the second advantage is that its amplitude is varied in proportion to the amplitude of the reference signal. Therefore, in this PWM method, the modulation index is varied according to the variation of the reference signal, so it is termed as Variable Index Pulse Width Modulation. In order to demonstrate the validity of the proposed method, the obtained simulation results are compared with results of the Space Vector Modulation (SVM) approach. Furthermore, it is shown that in the case of nonsinusoidal voltages, the SAF with the proposed control strategy can provide the filtering action. This method is quite easy to implement and requires lower circuitry. The results show that the proposed method can satisfy the IEEE-519 standard regarding the reduction of harmonics.

scholarly journals DSP-based pulse width modulation generator for very Spare Matrix Converter

2015 ◽  
Vol 18 (3) ◽  
pp. 122-131
Author(s):  
Anh Gia Hoang Nguyen ◽  
Tuyen Dinh Nguyen ◽  
Hong Hee Lee
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Matrix Converter ◽  
Modulation Scheme ◽  
Space Vector Modulation ◽  
Output Current ◽  
Sinusoidal Input ◽  
Simulation Results ◽  
Implementation Method ◽  
Vector Modulation

This paper present a modulation scheme for the Spare Matrix Converter (SMC) topology. The proposed method uses the space vector modulation (SVPWM) technique to control the converter’s rectifier stage and inverter stage. This method achieved the maximum modulation ratio of 0.866 with sinusoidal input/output current waveforms. In the other hand, a simple real-time implementation method avoiding additional CPLD or FPGA devices is introduced. This technique is verified through simulation results using PSIM software and experimental results a 32-bit floating-point DSP (TMS 320F28335).

Research on Cascade Multilevel Inverter Control Strategy

2013 ◽  
Vol 273 ◽  
pp. 439-443
Author(s):  
Zheng Zheng ◽  
Fei Yan
Keyword(s):  
Control Strategy ◽  
Carrier Frequency ◽  
Carrier Phase ◽  
Pulse Width Modulation ◽  
Space Vector Modulation ◽  
Dc Voltage ◽  
Wide Range ◽  
Multilevel Modulation ◽  
Simulation Results ◽  
Vector Modulation

Due to easy realization and high equivalent carrier frequency, the Carrier Phase-Shifted pulse width modulation technology has been applied in the multilevel modulation circuit. Space vector modulation technology has a wide range application because it is easy to realize and has the advantage of high DC voltage utilization. However, when it is directly used in a cascade inverter system, it becomes difficult to be realized because of the too many synthesis voltage vectors and switch states. This paper puts forward a new control strategy based on the technology of carrier phase-shift and vector control by means of combing the advantages of Carrier Phase-Shifted with the SVPWM. The simulation results show that the control strategy is feasible. It is not only has good harmonic characteristic and high equivalent carrier frequency, but also has advantages of high DC voltage utilization and easy digitization.

scholarly journals Study and implementation of space vector pulse width modulation inverter on an arduino

2021 ◽  
Vol 288 ◽  
pp. 01059
Author(s):  
Ngoc Sy Doan ◽  
Alexey Nikolaevich Tsvetkov ◽  
Thi Hoa Nguyen
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Hardware Design ◽  
Space Vector Modulation ◽  
Space Vector ◽  
Small Power ◽  
Three Phase ◽  
Design Software ◽  
Vector Modulation ◽  
Experimental Survey

Three-phase two-level inverters using space vector modulation (SVPWM) technology are one of the most popular inverter architectures today. The process of designing and manufacturing inverter systems usually goes through the following stages: simulation, hardware design, software programming on MCU, editing … In this article, we will focus on problem researching and implementing the SVPWM algorithm on an Arduino in detail. Besides, it is also based on the experimental survey of the inverter’s parameters, analyzing and proposing improved solutions for the inverter to operate optimally. SVPWM algorithm is tested on Arduino Mega 2560 board and small power inverter model.

scholarly journals Common Mode Voltage Elimination for Quasi-Switch Boost T-Type Inverter Based on SVM Technique

Electronics ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 76 ◽  
Author(s):  
Duc-Tri Do ◽  
Minh-Khai Nguyen ◽  
Van-Thuyen Ngo ◽  
Thanh-Hai Quach ◽  
Vinh-Thanh Tran
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Space Vector Modulation ◽  
Common Mode ◽  
Switching Sequence ◽  
Modulation Technique ◽  
Common Mode Voltage ◽  
Vector Modulation ◽  
Zero Vector ◽  
Current Ripple

In this paper, the effect of common-mode voltage generated in the three-level quasi-switched boost T-type inverter is minimized by applying the proposed space-vector modulation technique, which uses only medium vectors and zero vector to synthesize the reference vector. The switching sequence is selected smoothly for inserting the shoot-through state for the inverter branch. The shoot-through vector is added within the zero vector in order to not affect the active vectors as well as the output voltage. In addition, the shoot-through control signal of active switches of the impedance network is generated to ensure that its phase is shifted 90 degrees compared to shoot through the signal of the inverter leg, which provides an improvement in reducing the inductor current ripple and enhancing the voltage gain. The effectiveness of the proposed method is verified through simulation and experimental results. In addition, the superiority of the proposed scheme is demonstrated by comparing it to the conventional pulse-width modulation technique.

Applications of Two Level SVPWM in the Cascade Multilevel Carrier-Based PWM

2014 ◽  
Vol 556-562 ◽  
pp. 1939-1944
Author(s):  
Zuo Ming Liu ◽  
Zi Qiang Xi ◽  
Chen Guang Yu
Keyword(s):  
Pulse Width ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
Space Vector Modulation ◽  
Switching Loss ◽  
Space Vector ◽  
Main Work ◽  
Zero Sequence ◽  
Vector Modulation ◽  
Level Converter

First of all, this paper speculates that the essence of the space vector pulse width modulation (SVPWM) is the injection of some kind of zero sequence component through the theoretical analysis. Increasing the range of output voltage and reducing the switching loss are the optimization it can realize, the essential realization method is implemented by changing the placement of zero space vector. Then the method is applied to the cascade multilevel carrier modulation. The main work of this paper is to analyze the relation between SVPWM and the carrier PWM in the two level converter, then add the discrete modulation into the cascade multilevel carrier modulation to verify that the space vector modulation can be realized in cascade multilevel and can get similar results with the two level.

Extended Phase Opposition Disposition Pulse Width Modulation Technique for Cascaded 27 Level Inverter

2018 ◽  
Vol 15 (2) ◽  
pp. 417-422
Author(s):  
P. Tamilvani ◽  
K. R. Valluvan
Keyword(s):  
Control Strategy ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Frequency Component ◽  
Extended Phase ◽  
Digital Implementation ◽  
Multilevel Inverters ◽  
Simulation Results ◽  
Cascaded Multilevel Inverter

The Extended Phase Opposition Disposition PWM (EPODPWM) technique has been applied in the two-level inverters successfully, but it is impossible to apply directly the EPODPWM technique to multilevel inverters. This paper proposes two kinds of EPODPWM techniques suitable for a cascaded multilevel inverter, analyzes the control strategy with the EPODPWM and obtains the design of its parameters. The simulation results show the proposed EPODPWM methods can get high magnitudes of the output fundamental frequency component, low total harmonic distortion and simpler digital implementation.

Direct Regular Sampled Pulse Width Modulation Technique for a Three-Phase Current Source Inverter

2015 ◽  
Vol 793 ◽  
pp. 226-231
Author(s):  
Syahrul Ashikin Azmi ◽  
Mohd Azrik Roslan
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Current Source ◽  
Space Vector Modulation ◽  
Space Vector ◽  
Digital Implementation ◽  
Phase Current ◽  
Harmonic Elimination ◽  
Three Phase ◽  
Vector Modulation

This paper proposes a new regular sampled pulse width modulation (PWM) for three-phase current source inverters. The theoretical basis of the proposed modulation strategy is described, including dwell time calculations and switching sequence selection. This strategy is well suited for digital implementation, and enjoys all the flexibilities and degree of freedoms as in space vector modulation. In addition, it ensures a minimum number of switching transitions per fundamental cycle, unlike other PWM methods. It is therefore promising for high-power medium-voltage applications. The validity of the proposed modulation strategy has been confirmed using simulation and experimentation. To furthermore substantiate the superiority of the proposed modulation strategy against other PWM methods, its performance is compared to sinusoidal PWM, selective harmonic elimination, and space vector modulation.

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