Search query: t type inverter modeling

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abstract: A promising solution for inductive power transfer and wireless charging is presented on the basis of a single phase three level T type Neutral Point Clamped GaN based inverter with two coupled transmitting coils. The article focuses on the feasibility study of GaN transistor application in the wireless power transfer system based on the T type inverter on the primary side. An analysis of power losses in the main components of the system is performed: semiconductors and magnetic elements. System modeling was performed using Power Electronics Simulation Software (PSIM) It is shown that the main losses of the system are static losses in the filter inductor and rectifier diodes on the secondary side, while GaN transistors can be successfully used for the wireless power transfer system. The main features of the Printed Circuit Board (PCB) design of GaN transistors are considered in advance.
author_names: Viktor Shevchenko

Bohdan Pakhaliuk

Oleksandr Husev

Oleksandr Veligorskyi

Deniss Stepins

Ryszard Strzelecki
title: Feasibility Study GaN Transistors Application in the Novel Split Coils Inductive Power Transfer System with T Type Inverter
year: 2020

abstract: This paper presents a losses model of potentially highly efficient solution for primary side of inductive power transfer on the basis of a single phase T type inverter. The article is devoted to the losses analysis under compensation condition in the basic elements of the circuit for wireless energy transfer. The influence of the inductor's basic geometrical parameters on the losses in the semiconductors and inductors for two power levels: 110W and 550W was investigated. System modeling was performed in PSIM Simulation tool, design and study of inductors in ANSYS EM Suite. It is established that increasing of the coil`s outer diameter and the wire diameter leads to decreasing of total losses and increasing the coupling coefficient and system efficiency.
author_names: Viktor Shevchenko

Oleksandr Husev

Oleksandr Veligorskyi

Bohdan Pakhaliuk

Ryszard Strzelecki
title: Losses Model of the WPT System with Single Phase T Type Inverter
venue: 2020 IEEE 4th International Conference on Intelligent Energy and Power Systems (IEPS)
year: 2020

abstract: This paper presents T type multilevel inverter topology based dynamic voltage restorer (DVR) with reduced switch count. In medium voltage and high power applications, two level voltage source inverters are insufficient because of more voltage stress on switches, large dv/dt, size, and cost of the filter. To overcome these problems, multilevel inverter based DVR is suitable, which can be directly connected to the medium voltage distribution system without injection transformer. Nearest Level Control (NLC) in the inverter is used to create the desired waveform. The instantaneous reactive power theory (IRPT) to control the proposed DVR, The IRPT control scheme is famous by the name of p q transformation. Clarke coordinates transformation is the base of this scheme It is applied to the voltage and current to represent in polar form. To verify and validate the proposed DVR performance, simulations are carried out in the MATLAB SIMULINK software environment, and the results indicate the optimal performance and desirability of the proposed DVR to compensate for the voltage sag, swell and Unbalanced in power distribution grids. Theoretical analysis and simulation results are given to show the high performance of the proposed solution.
author_names: Ehsan Akbari
title: Modeling and Control of a Novel Transformer less Dynamic Voltage Restorer Based on T type Multilevel Inverter for Power Quality Improvement
year: 2019

abstract: T type network inverter is a topology that can realize three phase output from two single phase output inverters through transformer. The purpose of this paper is to design the circuit topology and controller to make the inverter output voltage meet. Aviation power requirements. Firstly, the DC power input circuit and transformer structure are designed according to the principle of voltage vector synthesis. Then the controller is designed by state space average modeling method and generalized predictive control method. Finally, the system model is built by MATLAB/Simulink simulation software. The 115V/400Hz three phase power required to convert 27V DC power to aviation power is realized, which verifies the effectiveness of the design content of this paper.
author_names: Minghong Yu

Jianding Han

Rongji Wang
title: Design of Generalized Predictive Controller for T Type Network Inverter
venue: 2019 International Conference on Artificial Intelligence and Advanced Manufacturing (AIAM)
year: 2019

abstract: Si IGBT and SiC MOSFET based hybrid switch is an emerging technology which combines the advantages of the two types of devices and introduces SiC benefits at significantly lower cost compared to state of the art SiC inverter technology. In this paper, a 1200V/50A Si/SiC hybrid switch is proposed. The switching characteristics and the steady state current sharing model are analyzed. The analysis indicates that the switching loss of the hybrid switch can be reduced significantly due to the zero voltage switching (ZVS) of Si IGBT. Furthermore, a hybrid switch based T type neutral point clamped (T NPC) inverter and its loss model are proposed. A 2.5kW hybrid switch based T NPC inverter prototype is designed and implemented to evaluate the efficiency improvement over a pure Si IGBT based inverter. The experimental results demonstrate that the inverter efficiency is improved by 4.75% at the switching frequency of 40kHz. The results also validate the proposed device loss model provides a good efficiency estimation of the hybrid devices based T NPC inverter.
author_names: Haichen Liu

Tiefu Zhao

Xuezhi Wu
title: Efficiency Improvement Evaluation and Loss Modeling of a Hybrid Switch Based T NPC Inverter
venue: 2019 IEEE 7th Workshop on Wide Bandgap Power Devices and Applications (WiPDA)
year: 2019

abstract: This paper analyzes the inverter nonlinearity effect resulting in issues such as narrow pulses and the even order harmonics in three level T type inverters. These issues make the compensation of the inverter nonlinearity be difficult. Based on the analysis of the output voltage distortion, carrier based PWM methods to avoid these issues and to balance dc link voltages simultaneously are proposed using the concept of the offset voltage. The proposed PWM methods can be easily implemented by adding appropriate offset voltages to output voltage references. Also, a compensation method to alleviate inverter nonlinearity effects is proposed based on the modeling of the inverter nonlinearity. The effectiveness of proposed methods is verified by experimental results. Through the proposed algorithms, not only even harmonics but also 5th and 7th harmonic components of current are conspicuously reduced. At the same time, the neutral voltage of the inverter can be balanced effectively by the proposed PWM methods.
author_names: Hyeon-Sik Kim

Yong-Cheol Kwon

Seung-Jun Chee

Seung-Ki Sul
title: Analysis and compensation of inverter nonlinearity for three level T type inverters
venue: 2016 IEEE Applied Power Electronics Conference and Exposition (APEC)
year: 2016

abstract: In common DC bus two parallel T type three level inverter systems, the neutral point (NP) potential balancing and the zero sequence circulating current (ZSCC) should be considered in practical applications. The differences of the parallel inverters in parameters, such as the filters, reference output current, and the unsynchronized switching states, will produce the ZSCC. However, the parameters and NP potential influence the amplitude of the ZSCC. In this paper, the modeling of NP potential and ZSCC in T type three level parallel inverter system is established and analyzed. In order to balance the NP potential, the compensation control based on the zero sequence voltage injection and feed back control is proposed. The combination of the compensation control and CM voltage injection is adopted to suppress the ZSCC. Finally, the effectiveness of the proposed strategy is verified by the simulation results.
author_names: Lucai Hu

Jianzhong Zhang

Shuai Xu

Haifu Wu
title: Zero Sequence Circulating Current Suppression for Parallel T Type Three Level inverters
venue: 2019 IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)
year: 2019

abstract: This paper focuses on the modeling, simulation, construction and experimental testing of a Lundell Machine controller circuit with three phase inverter bridge. The controller circuit was designed and built with the capability of employing both sensorless and sensored control methods, with an added feature of enabling control of the power delivered to an additional winding, which is rare in this type of circuitry and essential for wound rotor motors such as the Lundell Machine. Alongside, a new sensorless Back Electromotive Force (BEMF) method was implemented, employing average phase to phase voltage comparison on 3 phase EMs, with the intent of reducing the cost of the controller and improving robustness. The experimental results, together with the simulation values, depict the controller performance.
author_names: N G da Silva

Herminio Maio Graca Fernandes

Denis Rogerio da Silva
title: Modeling, simulation and hardware implementation of a Lundell Machine controller circuit with three phase inverter bridge
venue: 2012 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD)
year: 2012

abstract: Current source inverter drives are sources of harmonic and nonharmonic distortion in supply systems. The nonharmonic components have frequencies that change with motor speed so conventional filters might not be effective in reducing their amplitude. The distortion calculation at the design stage allows preventive actions to minimise the distortion at source by varying DC link and/or AC motor parameters. The aim of the paper is to discuss the modeling of the supply side current distortion and to analyse the effects of nonideal supply conditions. The main utilizable models, both analogue and numerical, are discussed and analysed. Several laboratory and numerical experiments are reported to compare the different model characteristics and to analyse the current distortion sensitivity to the supply voltage distortion and unbalance.
author_names: Rosario Carbone

Alfredo Testa

Daniele Menniti

Robert E Morrison

E J Delaney
title: Harmonic and interharmonic distortion in current source type inverter drives
year: 1995

abstract: Based on the terminal port theory, this paper has proposed a common mode conducted noise modeling method. Single phase inverter is chosen as an illustrative example. The T type model has been supposed as the internal structure of the terminal port, according to its features of CM impedance and the noise propagation route. The details of equivalent noise source are given and its accuracy has been verified by comparing with the concept definition. With this model, the effectiveness of the filter could be predicted quickly and accurately. The interaction effect between the EMI filter and harmonic filter has also been viewed in this paper. Theoretical analysis and experimental results are presented to verify this modeling methodology.
author_names: Shuaitao Zhang

Baihua Zhang

Masahito Shoyama
title: Develop Common Mode Conducted Noise Modeling Methodology with Terminal Port Theory
venue: 2019 IEEE 13th International Conference on Power Electronics and Drive Systems (PEDS)
year: 2019