Comparative performance evaluation between the S4R and the S3R regulated bus topologies

Capel, A.; Perol, P.

doi:10.1109/pesc.2001.954409

Cited by 45 publications

(11 citation statements)

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“…Sequential switching shunt regulator (S3R) was firstly introduced by D. O'Sullivan in 1977. Several derivative topologies are proposed afterwards, such as sequential switching shunt series regulator (S4R), S3R-digital shunt regulator (S3R-DSR) and sequential switching shunt maximum power point regulator (S3 MPPR) [6][7][8][9][10][11][12]. All these derivative topologies have the similar characteristics with S3R.…”

Section: Introductionmentioning

confidence: 99%

Control loop design of sequential switching shunt regulator considering the influence of double section functioning

You

2014

IET Power Electronics

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Sequential switching shunt regulator (S3R) has been widely used in satellites for its simple structure and high reliability. Double section functioning, which has two sections operating simultaneously, is the other operating mode of S3R beside the normal mode. It is inevitable and can lead to larger bus voltage ripple, less controllability and higher switching losses. A detailed analysis based on the double section functioning process description is given on the boundary load current, the main bus voltage ripple and the switching frequency. Considering the influence of double section functioning, a new method of control loop design of S3R is proposed based on the small single mathematical model. A 4.5 kW S3R prototype is built to verify the control loop design, and the load region of double section functioning can be limited as designed.

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Section: Introductionmentioning

confidence: 99%

Control loop design of sequential switching shunt regulator considering the influence of double section functioning

You

2014

IET Power Electronics

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“…Sullivan put forward the sequence switch shunt regulator technology in 1977, and then with the objective to define a regulated bus topology standard for telecommunication satellites, it was introduced by the European Space Agency [1]. The S3R concept has the following advantages: truly modular design; "small" bus filter required; only one module switching at a given time; excellent dynamic response to large load changes; bus voltage ripple is small; flexible design with inherent growth potential and so on [2].…”

Section: Introductionmentioning

confidence: 99%

Robust design on sequential switching shunt regulator circuit

Gao

2014

Proceedings of the 33rd Chinese Control Conference

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Considering the space Power Conditioning Unit (PCU) needs high reliable design, especially for it works in harsh environment, a robust design and optimal method is proposed. Firstly the mathematical model of sequential switching shunt regulator(S3R) is shown to be suitable for regulated bus power systems. Secondly, optimize the bus capacitor parameter by the parameter sweep analysis. Thirdly, when all the components change simultaneously in the worst case, the performance of the S3R circuit meets the design requirements and the shunt components meet the derating requirements in the monte carlo analysis and stress analysis. Finally, simulate two failure modes: the load changes in pulse mode and the current supply of the second-stage solar array is zero, the simulation results show that the output of the bus voltage is stable and ripples in the specified range.

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“…The practicability and reliability of SR have been widely studied, such as the new topology to reach higher voltage for SR [4,5], and the methods to decrease the influence by parasitic capacitance of solar arrays (SAs) [6][7][8], but the stability of SR is still not well conducted. The existing literatures mainly focus on modeling SR with the approximation linearization method, which has the limitation on the stability analysis for nonlinear system as there are some nonlinear phenomena cannot been explained by this modeling method [9].…”

Section: Introductionmentioning

confidence: 99%

Stability analysis of the shunt regulator in PCU with describing function method

Wang

You

et al. 2013

2013 IEEE Energy Conversion Congress and Exposition

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The shunt regulator (SR) is a key part of the power conditioning unit, which is a kind of power supply system for spacecrafts. SR is a strong nonlinear system due to the hysteresis control adopted, but the stability analysis for SR is still ground on the approximate linearization. In this paper, a novel stability analysis method for strong nonlinear systems is proposed based on describing function, which is used to model the nonlinear link of SR. Further, two different conclusions about the stability of SR are drawn, obtained by the approximate linearization method and the describing function (DF) method, respectively. Finally, the simulation and experimental results prove the correctness of the stability analysis method proposed in this paper and discover the limitation of the linearization method for analyzing the stabilities of the nonlinear systems.

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Comparative performance evaluation between the S4R and the S3R regulated bus topologies

Cited by 45 publications

References 0 publications

Control loop design of sequential switching shunt regulator considering the influence of double section functioning

Control loop design of sequential switching shunt regulator considering the influence of double section functioning

Robust design on sequential switching shunt regulator circuit

Stability analysis of the shunt regulator in PCU with describing function method

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