Power factor correction of large current line commutated converters using variable series capacitors

Matsumoto, Isao; Nomura, Shinichi

doi:10.1109/epe.2013.6634667

Cited by 8 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The FCSC-rectifier is based on the topology used in FACTS (Flexible AC Transmission System) controllers in power system applications, where AC voltages and frequencies are generally stable [34][35][36]. The purpose of the FCSC circuit in FACTS applications is to inject a small capacitive reactance into the transmission lines for grid quality purposes [37,38]. The IGBTs are switched-on at the zero-crossing point of the supply voltage and the turn-off time is calculated based on the required amount of injected capacitive reactance.…”

Section: Fcsc-rectifier Circuit Topologymentioning

confidence: 99%

Forced Commutated Controlled Series Capacitor Rectifier for More Electric Aircraft

Al-Mhana

Pickert

Atkinson

et al. 2019

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

Rising power demands in More Electrical Aircraft (MEA) put power converters for commercial airplanes under increasing pressure to fulfill current harmonic distortion regulations as specified, for example, in DO-160G. Today, the implementation of filters is seen as an effective tool for dealing with harmonics, however, their increased weight and volume is not welcomed in the aerospace industry. This paper proposes a circuit, named Forced Commutation Series Capacitor rectifier (FCSC-rectifier), which is able to maintain low individual harmonic current levels without the need for filter components. The FCSC-rectifier includes a variable capacitive line reactance that interacts in a controlled manner with the inductive line impedance. The result is that the converter input current is nearly purely sinusoidal with a power factor of almost unity. The FCSC-rectifier is to be used for stand-alone variable-voltage, variable-frequency generation systems (VFG) and can therefore power the Full Authority Digital Electronic Control System (FADEC) in an MEA. This paper shows that the FCSC-rectifier can maintain a high power factor and acceptable current harmonic levels without the use of filters, despite large voltage and frequency variations. A full description of the circuit modes of operation is presented in this paper together with simulation results showing circuit performance characteristics over a range of voltages and frequencies. Results are experimentally verified using a 1kW test circuit. Index Terms-Forced Commutated controlled Series Capacitor (FCSC), Full Authority Digital Electronic Control System (FADEC), More Electric Aircraft (MEA), current harmonics, power factor. I. INTRODUCTION he complexity of aircraft electrical loads has substantially increased in recent years with the advent of the More Electric Aircraft (MEA) [1-3]. The most safety critical system in any MEA is the FADEC (Full Authority Digital Electronic Control)system that continuously monitors and controls the ignition timing and fuel injection to the aircraft engine. FADEC control and designs have been reported in [4][5][6] with the focus being mainly on safety. Any failure within the FADEC leads to misfiring and loss of fuel injection [7-10] which would result in a catastrophic event, such as the Airbus A 400M crash in 2015 caused by FADEC failure [11]. One major area of concern is radiated and conducted EMI which could interact with the engine control

show abstract

Section: Fcsc-rectifier Circuit Topologymentioning

confidence: 99%

Forced Commutated Controlled Series Capacitor Rectifier for More Electric Aircraft

Al-Mhana

Pickert

Atkinson

et al. 2019

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

show abstract

“…Considering commutation failure mitigation, it has similar performance with CCC and has the potential risk of increasing valve voltage stress. In [13], the Gate-Commuted Series Capacitor (GCSC) is used at rectifier side for power factor correction. The proposed method can only insert capacitors in one direction and no discussions with regard to commutation failure are presented.…”

Section: Introductionmentioning

confidence: 99%

Elimination of Commutation Failures of LCC HVDC System with Controllable Capacitors

Xue

Zhang

Yang

2016

IEEE Trans. Power Syst.

127

View full text Add to dashboard Cite

This paper presents a novel hybrid converter configuration for conventional Line-Commutated Converter (LCC) HVDC technology aiming to eliminate commutation failures under serious faults. Dynamic series insertion of capacitors during commutation is utilized to increase the effective commutation voltage. The operating principles are presented followed by detailed mathematical analysis for both zero impedance single-phase and three-phase faults in order to select the required capacitor size and its voltage level. The performance of the proposed method is validated by simulation results in Real Time Digital Simulator (RTDS) and the results show that the proposed converter configuration is able to eliminate commutation failures under both fault cases. Consequently partial power transferring capability during single-phase fault and fast fault recovery from three-phase fault can be achieved. Further simulation results show that the harmonic content of inverter AC voltage and current are not significantly increased and the voltage stress of the thyristor valve is comparable to that of the original benchmark system.

show abstract

“…For stable load the fixed KV AR compensation is required , while for variable load the KV AR requirement also changes as per the load duration cycle, thus in such case the Automatic Power Factor control Panel is installed. [7][8] The Programming Logic Control (PLC) instead of micro controller working is same as controller. That is it will used to control & monitor the system and gives display.…”

Section: Introductionmentioning

confidence: 99%

The case study of Automatic Power Factor Controller on distorted system with overview of harmonics reduction technique

Shete

Gavade

2014

2014 International Conference on Computation of Power, Energy, Information and Communication (ICCPEIC)

View full text Add to dashboard Cite

The rational use of electrical energy calls for use energy with less loss. That means controlling all factors in electrical networks that source losses. One of these is lagging reactive power. As we know the most of industrial load is inductive as well as nonlinear which causes the production of low power factor and harmonics respectively. Static capacitor is used to improve the power factor and reactor is for harmonics reducer. So there is need to get above equipment together to improve system. The working of such equipment is totally automatic because if capacitor or reactor are switched on continuously then the life as well as efficiency is reduces. So it is very needful for industry to maintain their power factor as well minimizing the harmonics.

show abstract

Power factor correction of large current line commutated converters using variable series capacitors

Cited by 8 publications

References 3 publications

Forced Commutated Controlled Series Capacitor Rectifier for More Electric Aircraft

Forced Commutated Controlled Series Capacitor Rectifier for More Electric Aircraft

Elimination of Commutation Failures of LCC HVDC System with Controllable Capacitors

The case study of Automatic Power Factor Controller on distorted system with overview of harmonics reduction technique

Contact Info

Product

Resources

About