Analysis of the dynamic and steady-state performance of Cockcroft-Walton cascade rectifiers

Bellar, M.D.; Watanabe, Edson H.; Mesquita, A.

doi:10.1109/pesc.1990.131226

Cited by 15 publications

(22 citation statements)

References 1 publication

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“…In the mean time, the charging time to 2 C is short, so we can neglect the charge from 1 C , 2 C to the load, so the variable of charge at 1 C , 2 C : …”

Section: Circuit Analysesmentioning

confidence: 99%

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A High Voltage Low Ripple Voltage Multiplier Circuit and Its Characteristics Analyses

Li¹,

Yang²,

Dai³

2017

dtetr

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Abstract. The ripple voltage and voltage drop of Cockcroft-Walton voltage multiplying rectifiers are affected by the square or cube of stage number respectively. When increasing the number of the stage, the ripple voltage and voltage drop would significantly increase. For overcoming this problem, the proposed circuit adopts phase shift superposition to realize 2N time voltage multiplier circuit. By using three-phase transformer composed by three independently single phase transformer, output winding is connected to DC double voltage circuit. 12 times voltage circuit is built by parallel input, serial output to realize 6 pulses periodic superposition. Through the overlay, the ripple is greatly weakened. The theoretical analysis is made for ripple and voltage drop, and comparisons to the typical and symmetrical Cockcroft-Walton multistage voltage multiplier circuit are carried out. Results show that the circuit can significantly reduce the voltage ripple and voltage drop, and significantly shorten the output voltage steady set up time.

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“…In the mean time, the charging time to 2 C is short, so we can neglect the charge from 1 C , 2 C to the load, so the variable of charge at 1 C , 2 C : …”

Section: Circuit Analysesmentioning

confidence: 99%

“…When the input voltage, load and the average voltage are certain, the current ripple and voltage drop are respectively influenced by the square or cube of stage number [1][2][3][4][5]. In order to reduce the ripple and the voltage drop, this paper proposes a new voltage multiplying rectifier circuit.…”

Section: Introductionmentioning

confidence: 99%

A High Voltage Low Ripple Voltage Multiplier Circuit and Its Characteristics Analyses

Li¹,

Yang²,

Dai³

2017

dtetr

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“…The peak current through all even diodes and the output diode is equal to (9). The peak current through the odd diodes is equal to (10).…”

Section: Component Current Stressesmentioning

confidence: 99%

“…These currents are dependent on the conduction state of the diodes in the converter. Both the nonlinear behavior and the fact that they are not controlled externally makes the exact current waveforms through the converter components hard to determine [9]. This makes an accurate analytic solution for the RMS currents impossible [9].…”

Section: Component Current Stressesmentioning

confidence: 99%

Dual-input high gain DC-DC converter based on the Cockcroft-Walton multiplier

Muller

Kimball

2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

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Recent advancements in renewable energy has created a need for both high step-up and high efficiency dcdc converters. These needs have typically been addressed with converters using high frequency transformers to achieve the desired gain. The transformer design, however, is challenging. This paper presents a high step-up current fed converter based on the classical Cockcroft-Walton (CW) multiplier. The capacitor ladder allows for high voltage gains without the need of a transformer. The cascaded structure limits the voltage stresses in the converter stages, even for high gains. The converter (unlike traditional CW multipliers) allows the output voltage to be efficiently controlled. In addition, the converter supports multiple input operation without modifying the topology. This makes the converter especially suitable for PV applications where high gain, high efficiency, small converter size and MPPT are required. Design equations and possible control algorithms are presented in this paper. The converter operation was verified using digital simulation and a 450 W prototype converter.

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“…In particular, they are used in test equipment such as accelerators, lasers, battery chargers, X-ray machines, dcmachine drivers, and electronic loads [1][2][3]. However, the conventional implementation usually contains a bridge rectifier and a DC-DC boost converter, as shown in Fig.1 [4].…”

Section: Introductionmentioning

confidence: 99%

A Novel Bridgeless Single-Stage Step-Up Rectifier

Li¹,

Jeon²,

Kim³

2016

Journal of Electrical Engineering and Technology

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-This paper proposes a novel bridgeless single-stage step-up voltage rectifier. Rectification, voltage step-up, and power factor correction functions can all be achieved in a single-stage circuit. The proposed circuit could be used as a power supply for high-voltage battery chargers. The proposed circuit topology is based on a conventional voltage doubler. Two voltage doublers are connected in parallel for reducing the output voltage ripple. Two pairs of thyristors are implemented instead of the original diode for controlling the circuit. The analysis of the circuit operating process is demonstrated, and a prototype is built and tested. The experimental results verify that the proposed rectifier has good boost ratio, output voltage ripple, and power efficiency and an acceptable power factor function.

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Analysis of the dynamic and steady-state performance of Cockcroft-Walton cascade rectifiers

Cited by 15 publications

References 1 publication

A High Voltage Low Ripple Voltage Multiplier Circuit and Its Characteristics Analyses

A High Voltage Low Ripple Voltage Multiplier Circuit and Its Characteristics Analyses

Dual-input high gain DC-DC converter based on the Cockcroft-Walton multiplier

A Novel Bridgeless Single-Stage Step-Up Rectifier

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