Novel modulation strategy for a CLC resonant dual active bridge

Malan, W. L.; Vilathgamuwa, D.M.; Walker, Geoffrey R.; Thrimawithana, Duleepa J.; Madawala, Udaya K.

doi:10.1109/icpe.2015.7167868

Cited by 6 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Explicit modelling of the deadtime was not considered here since this would result in a significantly more complex analysis, with the modification and addition of new operation modes to the cyclic analysis. According to the soft switching analysis of the phaseshift modulated CLLC converter performed in [17], when using PPM modulation soft switching is only achieved for . The output current of the secondary bridge is negative when the bridge voltage transitions from negative to positive, resulting in Zero-Voltage Switching (ZVS) operation, while the primary bridge is near Zero-Current Switching (ZCS).…”

Section: Prototype Resultsmentioning

confidence: 99%

“…One drawback of SPS modulation is the large reactive currents and conduction losses that occur under partial loading [14,17], therefore, we also analyse CLLC converters behaviour when operating under Pulse-Phase modulation (PPM) [24,25]. Note that PPM is also known as Triple Phase-Shift (TPS) modulation as in [13,17].…”

Section: Phase-shift Modulation Techniquementioning

confidence: 99%

“…Equation 16can be solved analytically for each operation mode using the following equation: (17) Here, the circuit operates in each mode for a fixed period. The normalised time interval for each mode is given by a duty cycle .…”

Section: Cyclic-averaging Analysismentioning

confidence: 99%

“…Therefore, using equations (17), (22) and (27) the values for all state-variables can be calculated for any t during a cyclic mode.…”

Section: Cyclic-averaging Analysismentioning

confidence: 99%

“…To date, most literature focuses on frequency modulated CLLC converters [1, 12, 15, 16]. However, for applications requiring fixed‐frequency operation phase‐shift modulation can be implemented as an alternative [13, 14, 17].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Modelling of phase‐shift modulated bidirectional CLLC resonant converter

Martins

Stone

Foster

2020

IET power electron.

View full text Add to dashboard Cite

The paper proposes the application of two modelling techniques for analysis of bidirectional CLLC resonant converters. The state-variable and cyclic-averaging techniques are applied for converters operating under two types of phase-shift modulation: single-phase-shift (SPS) and pulse-phase modulation (PPM). The converter is analysed considering forward and reverse power flow directions and a state-variable equation description is obtained for both modes. The models are first validated through simulation, comparing the state-variable and cyclic-averaging results to a Spice-based simulation. Additionally, a low power prototype is built, experimental results are presented and the influence of parasitic elements and system delays is discussed. Simulation and experimental results show the models can accurately represent the behaviour of CLLC converters for both types of phase-shift modulation. In addition, using the cyclic-averaging technique results in a considerably faster execution compared to state-variable and Spice-based models.

show abstract

Section: Prototype Resultsmentioning

confidence: 99%