High frequency alternating current power supply for automobile auxiliary electrical systems

Antaloae, Ciprian; Marco, James; Vaughan, N. D.

doi:10.1109/speedam.2010.5542038

Cited by 2 publications

(3 citation statements)

References 18 publications

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“…DC PowerNet has been proposed by the SAE Dual/Higher Voltage Committee in the early 1990s to solve this issue, technical hurdles such as electric arcs, connector corrosion problems and bus-to-bus faults have yet to be overcome (Keim, 2004, Caliskan, 2000, Doublet et al, 2004. A high frequency AC (HFAC) power bus is potentially the solution due to its feasibility for applications with a cumulative power rating of 4kW, as detailed in the study by Antaloae et al (2010a). Also, the reliability problems related to high voltage connectors can be eliminated since the HFAC system utilises magnetic and galvanically-isolated connectors.…”

Section: Terms and Abbreviationsmentioning

confidence: 99%

“…What differentiates the research presented within this paper is that it provides a comprehensive and timely account of the benefits of HFAC power for vehicle auxiliaries based on motor actuators. The qualitative benefits of 400Hz AC motors as presented in (Masrur et al, 1998a, Masrur et al, 1998b (Antaloae et al, 2010a) and shown in Figure 4 for reference. The converter can supply up to 4kW in the form of a 100V, 50kHz sinusoid from a 42V DC source.…”

Section: Terms and Abbreviationsmentioning

confidence: 99%

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Feasibility of High-Frequency Alternating Current Power for Motor Auxiliary Loads in Vehicles

Antaloae

Marco

Vaughan

2011

IEEE Trans. Veh. Technol.

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This paper presents a feasibility study into the application of a 100V, 50kHz high frequency alternating current (HFAC) network for powering automotive electrical auxiliaries. The study is focused on motoractuated loads, and is divided into two sections. First, the investigation indicates the benefits of replacing low-torque DC motors with lighter and more efficient 400Hz AC machines for applications such as electric fans, fuel pumps or blower motors. A comparative examination of commercially available machines indicates space and weight reduction of more than 60%, and efficiency savings between 25% and 100% are possible. Second, the inquiry evaluates the viability of replacing existing DC/AC inverters with HFAC/AC converters for high-torque AC machines as employed for example in the electric power assisted steering (EPAS) or the heating, ventilation and air conditioning (HVAC) systems. Based on experimental and simulation results for a column-assist EPAS application, employing a three-phase permanent magnet synchronous motor, this study shows that a HFAC drive is expected to reduce the voltage harmonic content below 50kHz by at least 10% compared to the DC/AC inverter. However, the disadvantages of the former drive make it less attractive than the existing DC/AC circuit. Specifically, the EPAS motor torque ripple is expected to be approximately 2% higher compared to the DC counterpart drive. Further drawbacks of the HFAC/AC drive include high MOSFET conduction losses, higher voltage harmonics above 50kHz and complex control requirements of the inverter. Conclusively, significant HFAC advantages for motor loads can be attributed only to machines with a nominal torque capability that is limited to 2Nm. However, given the number of such devices within a typical vehicle, this translates into a possible vehicle mass saving of 30kg and a potential reduction in fuel consumption by 0.8L/100km.

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Section: Terms and Abbreviationsmentioning

confidence: 99%

Section: Terms and Abbreviationsmentioning

confidence: 99%

Feasibility of High-Frequency Alternating Current Power for Motor Auxiliary Loads in Vehicles

Antaloae

Marco

Vaughan

2011

IEEE Trans. Veh. Technol.

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“…Thus, the distribution distance of electrical network is long for modern vehicle compared with the computer and telecom system. Moreover, the load characteristics are unpredictable caused by (1) power distribution system is always connected with multiple loads to exhibit more variations than single load system, and (2) the power factor of point of load changes over a wide scope [9]. Consequently, the high-frequency power source has to provide high-quality sinusoidal output with the strong robustness against the exogenous perturbations.…”

Section: Introductionmentioning

confidence: 99%

An integrated controller for high‐frequency LCLC resonant inverter with phase‐shifted control and frequency regulation

Liu

Zeng

2016

Circuit Theory & Apps

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SUMMARYHigh-frequency alternating current has an extensive application as a result of outstanding advantages. The aim of the study is to develop a high-frequency power source to feed the auxiliary loads of vehicle application such as electric fans, blower motors, and lighting. A feasible implementation of high-frequency power source is examined by a full-bridge LCLC resonant inverter. The corresponding control scheme is proposed for the fourth-order resonant inverter to confront the control challenges of low output harmonics and dynamic nonlinear load. Firstly, an analysis parameter S r is defined to address the possible impacts of the varying operational frequency to output THD and ZVS features. Secondly, an integrated control scheme is presented to implement pulse-width control at heavy load and frequency regulation at light load. Lastly, an experimental prototype is accomplished with the peak voltage of 35 V and the output power of 120 W. The accordance of experimental results and theoretical analysis testifies that the proposed control scheme can achieve the low harmonics and high conversion efficiency over a wide scope of operational conditions.

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High frequency alternating current power supply for automobile auxiliary electrical systems

Cited by 2 publications

References 18 publications

Feasibility of High-Frequency Alternating Current Power for Motor Auxiliary Loads in Vehicles

Feasibility of High-Frequency Alternating Current Power for Motor Auxiliary Loads in Vehicles

An integrated controller for high‐frequency LCLC resonant inverter with phase‐shifted control and frequency regulation

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