Experimental investigation on voltage stability in vehicle power nets for power distribution management

Kohler, Tom P.; Wagner, Thomas; Thanheiser, Andreas; Bertram, Christiane; Buecherl, Dominik; Herzog, Hans-Georg; Froeschl, Joachim

doi:10.1109/vppc.2010.5729168

Cited by 25 publications

(23 citation statements)

References 15 publications

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“…In future work, the model will be used both in the Modelica-based automotive power net simulation environment (Ruf et al, 2013) as well as in real-time operation in an automotive power net test bench (Kohler et al, 2010). For parametrization of the model, only the switching frequency and the datasheet parameters of the power semiconductors, the inductance, and the capacitors are needed.…”

Section: Objectives and Approachmentioning

confidence: 99%

Average Model of a Synchronous Half-Bridge DC/DC Converter Considering Losses and Dynamics

Winter

Moser

Schoenewolf

et al. 2015

Linköping Electronic Conference Proceedings

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Nowadays, power electronic systems play a major role in almost every large system. Due to the high switching frequencies, the simulation of these devices is computationally very expensive and not suitable for system simulation. Average models of these power electronic systems are needed to simulate the basic terminal characteristics of these devices without the need to simulate every switching operation. This paper describes a Modelica implementation of a synchronous half-bridge converter for the use in an automotive power net simulation as well as in real-time environments. The model takes into account the losses in the semiconductors as well as the dynamic behavior of the converter. For the parametrization of the model, only the switching frequency and some values from the datasheets of the used components are required. To validate the proposed model, an equivalent SPICE model is developed, serving as a reference model. The dynamic behavior of the two models is compared using step responses of the load current. The relative deviation of the model's output voltage compared to the SPICE simulation is less than 2 %. Furthermore, also the energetic behavior was investigated, and it is shown that the proposed model provides good results for a wide operating area.

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Section: Objectives and Approachmentioning

confidence: 99%

Average Model of a Synchronous Half-Bridge DC/DC Converter Considering Losses and Dynamics

Winter

Moser

Schoenewolf

et al. 2015

Linköping Electronic Conference Proceedings

Self Cite

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show abstract

“…However, it is possible to reduce the complexity retaining nearly constant accuracy as presented in [7]. For example, two loads using the same distribution box and grounding bolt can be substituted by a common load module or, in other cases, several smaller loads can be combined to form a larger load module.…”

Section: Electric Loadsmentioning

confidence: 99%

“…Due to these developments, it has become more and more difficult to guarantee voltage stability within the 12 V power system [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations on Voltage Stability in Multilevel Power Nets

Kohler

Wank²,

Thanheiser³

et al. 2012

WEVJ

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In recent years, more and more components in vehicles have been electrified in order to improve the safety and comfort of the passengers as well as the driving performance. Owing to these developments, it has become increasingly difficult to guarantee the voltage stability within the 12 V as well as the high voltage power bus. However, a new degree of freedom arises, as the two power nets are connected in order to exchange energy. As a consequence, they are able to stabilize their voltage reciprocally. This paper deals with the analysis of how two voltage levels can be coupled actively in order to stabilize their voltages in power demanding situations. A power net test bench consisting of a 12 V power net and a high voltage power net is built. In the 12 V power net, original chassis and wiring harness are used in order to achieve the most realistic behavior. Furthermore, there are two control modes presented. In the power control mode, the power flow is increased preventively when the prediction model detects a critical situation that is likely to occur in the near future. In the voltage control mode, the voltage controller of the DC chopper converter is used to stabilize the power net voltage in real time. Both control methods can easily be implemented into a universal power distribution management system. The voltage control mode is experimentally investigated at the power net test bench and it is shown that the minimum voltage in very power-consuming driving situations is increased by about 1.5 V per 1000 W of applied power supplied by the DC chopper converter.

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“…Then, suitable measures can be taken to pre-condition the electric power net. Some possible stabilizing measures are mentioned in (Kohler, Wagner, Gehring, Froeschl, Thanheiser, Bertram, Buecherl & Herzog, 2010 Fig. 15.…”

Section: Critical Situationsmentioning

confidence: 99%

Voltage Stability Analysis of Automotive Power Nets based on Modeling and Experimental Results

Kohler¹,

Gehring²,

Froeschl³

et al. 2011

New Trends and Developments in Automotive System Engineering

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Experimental investigation on voltage stability in vehicle power nets for power distribution management

Cited by 25 publications

References 15 publications

Average Model of a Synchronous Half-Bridge DC/DC Converter Considering Losses and Dynamics

Average Model of a Synchronous Half-Bridge DC/DC Converter Considering Losses and Dynamics

Experimental Investigations on Voltage Stability in Multilevel Power Nets

Voltage Stability Analysis of Automotive Power Nets based on Modeling and Experimental Results

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