Investigations on Different Multilevel Inverter Control Techniques by Simulation

Chaturvedi, Pradyumn; Jain, Shailendra; Agrawal, Piyush; Modi, P. K.

doi:10.1109/pedes.2006.344425

Cited by 8 publications

(4 citation statements)

References 13 publications

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“…The three-level switching functions S a (t) , S b (t) , S c (t) for the legs of an inverter are similar to those of an AC/DC converter. Thus, the switching functions for three-level PWM converters can be generally expressed as [7]- [10].…”

Section: B Three-level Convertersmentioning

confidence: 99%

Developing Function Models of Back-to-Back PWM Converters for Simplified Simulation

Van¹,

Lee²

2011

Journal of Power Electronics

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In this paper, a function model of back-to-back PWM converters, based on the switching function, is developed for simplified simulation of power electronic application systems. For the function model, the PWM power switches are represented by dependent power sources. By using the proposed function model, the computer memory and the run time required for the simulation of power circuits can be significantly reduced. It is shown that the simulation results generated from the function models are almost the same as the ones obtained by using the switching power device model.

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Section: B Three-level Convertersmentioning

confidence: 99%

Developing Function Models of Back-to-Back PWM Converters for Simplified Simulation

Van¹,

Lee²

2011

Journal of Power Electronics

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“…Unidirectional or bidirectional power flow of real and reactive power, power flow control, and power factor improvement are also possible in three stage SST topology [3]. The high voltage AC-DC converter in three stage topology is mainly multilevel type to withstand high voltage switching conditions [4]. In [5], SiC based MOSFETs/IGBTs are used for manufacturing multilevel converters.…”

Section: Introductionmentioning

confidence: 99%

Multi-physics Analysis and Loss Evaluation of High Frequency Transformer with Non-sinusoidal Excitation

Joseph,

John,

Pinkymol

et al. 2023

PIER M

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High Frequency Transformer (HFT) acts as the key element of a Solid State Transformer (SST), which is a mandatory equipment in smartgrid system. SST replaces power frequency transformer by providing control and communication in power system. The design of an HFT matching the design of conventional distribution transformer is done in this paper. It is done by developing an iterative algorithm using Brute Force technique. The optimum design is selected by taking minimization of total owning cost as objective function. The algorithm takes eight design variables and four design constraints for shortlisting the optimum design. The optimum design developed is validated in finite element analysis software. The multi-physics analysis of the design is done by interconnecting electromagnetic, mechanical, thermal, and power electronics components of the system. The analytical and numerical analysis follow the same pattern by conducting a case study on the design of HFT with ratings 1000 kVA, 11 kV/415 V, three phases.

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“…The use of multilevel approach is believed to be a promising alternative in very high power conversion processing [2,8]. Chaturvedi et al [3] presented simulation studies on different control techniques for three and five level DCMLI. The performance of each technique has been investigated based upon reduction in THD.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Carrier Overlapping PWM Strategies for Five Level Diode Clamped Inverter

Shanthi¹,

Natarajan²

2011

ijeei

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Keywords: dSPACE, DCMLI, PWM, COPWM, CFD. IntroductionMultilevel inverter has drawn tremendous interest in high power applications because it has many advantages: it can realize high voltage and high power output through the use of semiconductor switches without use of transformer and without dynamic voltage balance circuits. When the number of output levels increases, harmonics of the output voltage and current as well as Electro Magnetic Interference (EMI) decrease. Behera et al [1] described the harmonic analysis of the stepped output of the three level inverter based on number of triangular carriers and a sinusoidal modulating signal. The use of multilevel approach is believed to be a promising alternative in very high power conversion processing [2,8]. Chaturvedi et al [3] presented simulation studies on different control techniques for three and five level DCMLI. The performance of each technique has been investigated based upon reduction in THD. Many investigators [4,10,13] have proposed carrier based multilevel sine triangle PWM schemes for control of a DCMLI used in a motor drive and in a static VAR compensator. Multilevel converters are rapidly emerging as viable alternatives for high power drives. A generalized circuit topology of multilevel voltage source inverter is proposed in [5]. Aquila et al [6] presented a digital implementation of DCMLI employing a fast microprocessor and logic circuits. Multilevel voltage source inverters have recently become very popular in applications using renewable energy sources such as fuel cell, photovoltaic cell and biomass etc [7]. The idea of control degrees of freedom combination and the validity of the PWM strategies are demonstrated by simulation and experimentation of three and five level inverters by Hongyan Wang et al [9]. This is based on a direct extension of three level inverter to higher level. Newton et al [11] discussed the control requirements for three and five level inverters.

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Investigations on Different Multilevel Inverter Control Techniques by Simulation

Cited by 8 publications

References 13 publications

Developing Function Models of Back-to-Back PWM Converters for Simplified Simulation

Developing Function Models of Back-to-Back PWM Converters for Simplified Simulation

Multi-physics Analysis and Loss Evaluation of High Frequency Transformer with Non-sinusoidal Excitation

Comparative Study on Carrier Overlapping PWM Strategies for Five Level Diode Clamped Inverter

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