High frequency and high efficiency DC-DC converter with sensorless adaptive-sizing technique

Cheng, Xin; Shao, Wanjing; Zhang, Yongqiang; Zeng, Junming; Zhang, Zhang

doi:10.1587/elex.16.20190719

Cited by 4 publications

(3 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As was analyzed earlier, during T 4f of the turn-off sequence, V DS must rise above V in to discharge L D . Using (12), the calculated T 4f was 1.30 nS, which is also an accurate value according to the simulated result in Figure 6.…”

Section: Verification Of Analyzing the Switching Waveformsupporting

confidence: 69%

“…In recent years, the operating frequency of the converter has been continuously increasing [5][6][7][8] to achieve higher power efficiency, faster speed, and higher power density. In addition to the consideration of topologies and control strategies [9][10][11][12], the switching process and the switching loss of the power switches are playing more important roles in a high-frequency DC-DC converter. The transient behavior of a power transistor can cause power dissipation and overvoltage, overcurrent, or even ringing [13][14][15][16][17], which are related to the system efficiency, maximum voltage or current ratings of the power transistor, and the electromagnetic interference (EMI) property of the system.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Miller Plateau Corrected with Displacement Currents and Its Use in Analyzing the Switching Process and Switching Loss

et al. 2021

View full text Add to dashboard Cite

This paper reveals the relationship between the Miller plateau voltage and the displacement currents through the gate–drain capacitance (CGD) and the drain–source capacitance (CDS) in the switching process of a power transistor. The corrected turn-on Miller plateau voltage and turn-off Miller plateau voltage are different even with a constant current load. Using the proposed new Miller plateau, the turn-on and turn-off sequences can be more accurately analyzed, and the switching power loss can be more accurately predicted accordingly. Switching loss models based on the new Miller plateau have also been proposed. The experimental test result of the power MOSFET (NCE2030K) verified the relationship between the Miller plateau voltage and the displacement currents through CGD and CDS. A carefully designed verification test bench featuring a power MOSFET written in Verilog-A proved the prediction accuracy of the switching waveform and switching loss with the new proposed Miller plateau. The average relative error of the loss model using the new plateau is reduced to 1/2∼1/4 of the average relative error of the loss model using the old plateau; the proposed loss model using the new plateau, which also takes the gate current’s variation into account, further reduces the error to around 5%.

show abstract

Section: Verification Of Analyzing the Switching Waveformsupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Miller Plateau Corrected with Displacement Currents and Its Use in Analyzing the Switching Process and Switching Loss

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Among the non-isolated converters, boost, coupled inductor and tapped inductor types are widely used in EV applications. A 3-level bidirectional converter is used for a power management scheme with battery and fuel cell [5,6,7]. A multiphase coupled inductor bidirectional dc converter to offer fast transient response and to reduce inductor current ripple is proposed for EVs.…”

Section: Introductionmentioning

confidence: 99%

Testing and implementation of dual way DC-DC converter for electric vehicle power train system

Subramaniyan

Vijayakumar

2022

IEICE Electron. Express

View full text Add to dashboard Cite

Escalating fuel prices and a keen attention to improve air quality have resulted in proliferation of pure electric and hybrid electric vehicles. Fuel savings and reduced carbon footprint are the main enablers for the choice of electric automobiles compared to the conventional vehicles with internal combustion engines. Availability of electric power sources such as lightweight battery packs also has promoted electric drive as a viable option. Both plug-in electric and hybrid vehicles necessitate new power train schemes ensuring safe and reliable operation. The DC -DC converters are the heart of an electric vehicle. They are used to convert the battery voltage to another level as required by the motor drive. Traditionally, most of the automakers use buck boost converter as it enables the bidirectional operation. This paper presents a comprehensive analysis of a dual way DC-DC converter namely split pi converter for an electric vehicle drive train system driving an inverter fed induction motor. The dual way converter investigated has numerous advantages such as inherent bidirectional capability, EMI reduction and reduction of the passive elements. Simulation results and experimental investigations based on a laboratory prototype are presented.

show abstract

Equivalent circuit of interleaved air-core toroidal transformer derived from analogy with coupled transmission lines

Hashimoto

Hikihara

2020

IEICE Electron. Express

View full text Add to dashboard Cite

High frequency and high efficiency DC-DC converter with sensorless adaptive-sizing technique

Cited by 4 publications

References 30 publications

Miller Plateau Corrected with Displacement Currents and Its Use in Analyzing the Switching Process and Switching Loss

Miller Plateau Corrected with Displacement Currents and Its Use in Analyzing the Switching Process and Switching Loss

Testing and implementation of dual way DC-DC converter for electric vehicle power train system

Equivalent circuit of interleaved air-core toroidal transformer derived from analogy with coupled transmission lines

Contact Info

Product

Resources

About