Voltage balancing method for IGBTs connected in series

2003 ◽  
Author(s):  
K. Sasagawa ◽  
Y. Abe ◽  
K. Matsuse
Keyword(s):  
Voltage Balancing ◽  
In Series

scholarly journals Hybrid Multilevel Converters: Topologies, Evolutions and Verifications

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 615 ◽  
Author(s):  
Jianzhong Zhang ◽  
Shuai Xu ◽  
Zakiud Din ◽  
Xing Hu
Keyword(s):  
High Voltage ◽  
Control Strategies ◽  
Multilevel Converter ◽  
Power Devices ◽  
Multilevel Converters ◽  
Voltage Balancing ◽  
In Series ◽  
Good Potential ◽  
And Control ◽  
Balancing Control

Multilevel converters have good potential in high power and high voltage applications due to their advantages of reduced voltage or current stress on power devices. In recent years, hybrid multilevel converter (HMC) have attracted increasing attention since less equipment is required. In this paper, the topologies and evolutions of HMCs are presented, where five topology derivation ways are given by using basic cells in series-parallel/parallel-series. Some general topologies or structures that are used to generate higher levels are also deducted. Then many existing HMCs can be derived, and new topologies of the HMC might be inspired. The capabilities of neutral point and FC voltage balancing control are investigated. The performance of the selected FC-based HMCs is analyzed. Finally, the verifications of operation principle and control strategies for the derived HMCs are carried out.

scholarly journals DAĞITILMIŞ SERİ REAKTÖRLERİN(DSR) GÜÇ SİSTEMLERİNE ETKİLERİ

2020 ◽  
Vol 15 (4) ◽  
pp. 50-63
Author(s):  
Yusuf Alaşahan ◽  
Salih Tosun
Keyword(s):  
Power System ◽  
Transmission Line ◽  
Power Transmission ◽  
Load Flow ◽  
Voltage Balancing ◽  
Current Transmission ◽  
In Series ◽  
Flexible Alternating Current Transmission ◽  
Simulator Program ◽  
Transmission Capability

Distributed Flexible Alternating Current Transmission System (DFACTS) devices are devices that are connected in series to the transmission line and even adding reactance. Devices, also referred to as Distributed Serial Reactors (DSR), have the ability correct impedance imbalance by interfering with line parameters in the power system. In addition, voltage balancing as a result of balanced load flow enables more power transmission or more efficient use of the power system's transmission capability. For this reason, the use of the system to control its loadability without expanding its dimensions is becoming more and more widespread. In this study, the effects of DSR devices on system loadability and voltage stability and their applicability are analyzed. The analysis was carried out on the Institute of Electrical and Electronics Engineers (IEEE) 6-bus Standard system using the Power World Simulator Program. The effects of DSR on the system were investigated by performing load flow.

scholarly journals A new generalized cross-connected switched capacitor multilevel inverter topology with high output voltage gain for single phase solar PV unit

2021 ◽  
Vol 9 (4A) ◽  
Author(s):  
Prem P ◽  
◽  
Suresh V ◽  
Jagabar Sathik M ◽  
Shady H.E.Abdel Aleem ◽  
...  
Keyword(s):  
Multilevel Inverter ◽  
Switched Capacitor ◽  
Voltage Gain ◽  
Solar Pv ◽  
Voltage Balancing ◽  
In Series ◽  
Terminal Voltage ◽  
Inherent Voltage ◽  
High Output Voltage ◽  
Dynamic Loading Conditions

Switched capacitor multilevel inverters are gaining much attention these days due to their merits like voltage boosting and voltage balancing characteristics. A Cross Connected Switched Capacitor Multilevel Inverter (C2SC-MLI) topology is proposed in this work. It can synthesize thirteen levels in the terminal voltage waveform and with a voltage boost ratio of 1:3. The topology is extendable by adding additional “n” modules in series. The number of levels (NLevel) and the voltage gain can be increased up to 4i+9 and 1:(i+2) respectively by connecting ‘i’ such ‘n’ modules. The topology also has inherent voltage balancing ability. To prove the advantage of proposed topology it is compared with recent switched capacitor multilevel inverter topologies and conventional multilevel inverter topologies in terms of number of power electronic components required, cost and voltage gain. The performance of proposed topology is validated using simulation in MATLAB and with an experimental prototype rated 0.1 kW fed by a solar PV emulator under steady state and dynamic loading conditions.

scholarly journals An Active Cascaded Battery Voltage Balancing Circuit Based on Multi-Winding Transformer with Small Magnetizing Inductance

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1302
Author(s):  
Young-Hwa Park ◽  
Rae-Young Kim ◽  
Yeong-Jun Choi
Keyword(s):  
Power Density ◽  
Heat Generation ◽  
Active Cell ◽  
Mode Analysis ◽  
Battery Voltage ◽  
Voltage Balancing ◽  
Discharge Cycle ◽  
Comparison Results ◽  
In Series ◽  
Cell Balancing

This paper covers the active voltage balancing method of secondary batteries. The number of applications using secondary batteries is increasing, and the batteries are normally connected in series/parallel to increase discharge cycle and power. The problem is that when there is a voltage imbalance between the cells or modules of a battery, there is a risk of an accident in the near-sighted way, shortening the life of the battery cells. Although this risk was prevented through passive balancing, this approach has limitations, including heat generation, long balancing time, and in the case of a battery that needs to be balanced between modules (or between stacks), its effectiveness decreases. Therefore, in this paper, an active cell balancing method that can overcome the limitations mentioned before is proposed. The proposed method uses a multi-winding transformer, and to increase the power density, the magnetizing inductance is decreased, and an auxiliary circuit is added. The validity of the proposed circuit was verified through mode analysis and simulation. In addition, waveforms showing the balancing performance under various conditions and the comparison results between conventional and proposed methods are given.

scholarly journals Independent Double-Boost Interleaved Converter with Three-Level Output

2021 ◽  
Vol 11 (13) ◽  
pp. 5993
Author(s):  
Vasile Mihai Suciu ◽  
Sorin Ionut Salcu ◽  
Alexandru Madalin Pacuraru ◽  
Lucian Nicolae Pintilie ◽  
Norbert Csaba Szekely ◽  
...  
Keyword(s):  
Mathematical Analysis ◽  
Level Structure ◽  
Significant Feature ◽  
Voltage Gain ◽  
Boost Converters ◽  
Voltage Balancing ◽  
Integrated Boost ◽  
In Series ◽  
Converter Topology ◽  
Laboratory Prototype

This paper introduces a novel converter topology based on an independent controlled double-boost configuration. The structure was achieved by combining two independent classic boost converters connected in parallel at the input and in series at the output. Through proper control of the two boost converters, an interleaved topology was obtained, which presents a low ripple for the input current. Being connected in series at the output, a three-level structure was attained with twice the voltage gain of classic boost and interleaved topologies. A significant feature of the proposed converter is the possibility of independent operation of the two integrated boost converters, in both symmetrical and asymmetrical modes. This feature may be particularly useful in voltage balancing or interconnection with bipolar DC grids/applications. The operation principle, simulations, mathematical analysis, and laboratory prototype experimental results are presented.

Sign in / Sign up

Export Citation Format

Share Document