Active DC filter for HVDC system-a test installation in the Konti-Skan DC link at Lindome converter station

Zhang, W.; Asplund, Gunnar; Åberg, Andreas; Jönsson, Ulf; Loof, O.

doi:10.1109/61.252686

Cited by 34 publications

(5 citation statements)

References 3 publications

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“…The capacitors C2 and C3 provide the role of impedance matching at this input side. The parallel connected L1 and L4 and the L5 inductors are a prevention measure for any AC signal to reach the DC power supply [48,49]. After that, the parallel connected LC circuits (L2-C4, L3-C5) are used for the purpose of harmonic suppression [50].…”

Section: A Single-stage Class-e Amplifiermentioning

confidence: 99%

Design and Simulation of Class-E Powe Amplifier having Single Stage and 2-Stage at 2.4 GHz for IOT

Fatima¹

2022

Preprint

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In this project, we have designed a single-stage & 2-stage power amplifiers operated on 2.4 GHz. The purpose of this design is to provide better efficiency and high gain. This can be done by improving impedance matching techniques & by using harmonic suppression. In these two stages of power amplifiers, it consists of two inductors and two capacitors which are used to build harmonic suppression circuits. The basic purpose of these components is to increase the overall of efficiency of power amplifiers. In these circuits of power amplifier, VCC of 4.2 v is given and input & output impedances are matched to 50 ohms. In our project, we have simulated single and 2-stage amplifiers on ADS. We have observed the gain and power added efficiency for single stage power amplifier which are 16.932 dB and 45.496% respectively. While for the Two stage amplifier, the gain and power added efficiency are 28.625 dB and 42.285% respectively.

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Section: A Single-stage Class-e Amplifiermentioning

confidence: 99%

Design and Simulation of Class-E Powe Amplifier having Single Stage and 2-Stage at 2.4 GHz for IOT

Fatima¹

2022

Preprint

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“…As (5) shows, the input current consist of four components: the dc component which implies the consumed active power, the second-order low frequency ripple current, the m-order harmonic current respective to the modulation frequency, and bandside harmonic current. Detail analysis is out the scope of this paper.…”

Section: Input Current Analysis Of Single-phase Aeronautical Statmentioning

confidence: 99%

“…Shunt APF, the most widely used topology, in which small or even no passive components are used could directly be installed in the power system without changing the original configuration and equipment. DC-APF is the APF used in a DC power system, which has been applied in the HVDC [5][6] and low-ripple high-precision dc power supply [7][8]. In the fuel cell based power system, low-frequency ripple current deteriorates the performance and life of the fuel cell.…”

Section: Introductionmentioning

confidence: 99%

Low frequency ripple current compensation with DC active filter for the single-phase aeronautic static inverter

Zhong

Chen

Luo

et al. 2011

2011 IEEE Energy Conversion Congress and Exposition

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The second order harmonic current drawn by the main part of single-phase aeronautic static inverter which is a typical load in the aircraft power system deteriorates the power quality of aeronautic high voltage power system. In this paper, the low frequency harmonic propagation which is hard to be filtered by the passive components is studied. In order to maintain a good power quality, a DC active power filter (DC-APF) is proposed to be installed in parallel with the aeronautic static inverter, producing the low-frequency current for the load. A novel DC-APF based on the "dual switch" topology is proposed in this paper. This novel configuration is suitable for the aircraft power system with the requirement of high reliability for its inherent "no shoot-through" behavior, optimization of the devices and good comprehensive performance. Control strategy of this con-figuration and discussion about the modeling analysis are given as well. Experimental results are shown to verify the good harmonic compensation characteristic.

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“…In addition to their practical application in highpower magnet sources with superlow ripple [1,2], active DC filters with PWM converters connected at the DC side of the thyristor rectifier circuit can also be used in rapidtransit railway systems and high-voltage direct current (HVDC) transmission lines [3,5]. The authors have already considered similar schemes, which included systems of active filter control, and have analyzed their corrective properties and stability [6].…”

Section: Introductionmentioning

confidence: 99%

A new method of damping harmonic resonance at the DC link in a large‐capacity rectifier‐inverter system

Tanaka

Fujikawa

Funabiki

2003

Electrical Engineering Japan

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SUMMARYThis paper proposes a new method of damping harmonic resonance in the DC link of a large-capacity rectifier-inverter system, such as in rapid-transit railways. A voltage-source PWM converter is connected in series to the DC capacitor of the rectifier through a matching transformer, acting as a damping resistor to the DC capacitor current. No filters are needed to extract harmonic components from the DC capacitor current. This results in a quick response and highly stable damping. The relationship between the control gain of the PWM converter and the required rating is theoretically discussed. We show that the required rating is less than one-thousandth of that previously proposed. In particular, regenerating the power consumed by the PWM converter is very important because of the large power in practical systems. Normally, an additional PWM inverter is connected to the DC bus of the PWM converter to regenerate the consumed power. The additional inverter regenerates the DC power to the AC source through a transformer. This method, however, makes the damping circuit complex, thus the proposed method for the DC-link harmonic resonance is less practicable. In this paper, a simple and novel scheme that utilizes the DC-link voltage of the rectifier as a DC source for the PWM converter is proposed. The excellent practicability of the proposed damping method with the novel regenerating scheme is confirmed using digital computer simulation.

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Active DC filter for HVDC system-a test installation in the Konti-Skan DC link at Lindome converter station

Cited by 34 publications

References 3 publications

Design and Simulation of Class-E Powe Amplifier having Single Stage and 2-Stage at 2.4 GHz for IOT

Design and Simulation of Class-E Powe Amplifier having Single Stage and 2-Stage at 2.4 GHz for IOT

Low frequency ripple current compensation with DC active filter for the single-phase aeronautic static inverter

A new method of damping harmonic resonance at the DC link in a large‐capacity rectifier‐inverter system

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