Influence of isolation transformer leakage inductance on constant current output of Class D series-parallel LCC-type resonant converter for light-emitting diode lighting application

Chen K.; Kumar N.

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Influence of isolation transformer leakage inductance on constant current output of Class D series-parallel LCC-type resonant converter for light-emitting diode lighting application

机译：隔离变压器漏感对发光二极管照明应用D类串并联LCC型谐振变换器恒流输出的影响

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This research studied the influence of isolation transformer leakage inductance on the output current of Class D series-parallel LCC-type resonant converters for light-emitting diode lighting applications. Through theoretical analysis and simulation of the resonant tank impedance over a wide operation frequency range, an impedance peak was discovered at light load condition, with the peak value increasing with decreases in output load. This impedance peak will cause double-peak voltage and current gain of the resonant tank; moreover, the peak of the gain curve, which is introduced by leakage inductance of the isolation transformer, is located at the designed inductive operation region. These characteristics bring challenges to realising a wide operational range and designing short-circuit protection. To minimise these influences, the leakage inductance value should be controlled by a winding method, and the operational frequency range should be well designed.

机译：这项研究研究了隔离变压器漏感对发光二极管照明应用D类串并联LCC型谐振转换器的输出电流的影响。通过在较宽的工作频率范围内对谐振回路的阻抗进行理论分析和仿真，发现在轻载条件下的阻抗峰值，该峰值随输出负载的减小而增大。此阻抗峰值将导致谐振回路的双峰电压和电流增益；此外，由隔离变压器的漏感引起的增益曲线的峰值位于设计的电感工作区域。这些特性给实现广泛的工作范围和设计短路保护带来了挑战。为了最大程度地减少这些影响，应通过绕组方法控制漏感值，并应精心设计工作频率范围。

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《Power Electronics, IET》 |2014年第6期|1362-1373|共12页
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Chen K.; Kumar N.;
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Solid State Lighting, Opto-electronics R&D, Osram Sylvania, 54 Cherry Hill Drive, Danvers, MA 01923, USA|c|;

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专利

1. Analysis of transformer leakage inductance and overlap effects in the series-parallel resonant converter [J] . Ward G.A., Forsyth A.J. IEE Proceedings. Part B, Electric Power Applications . 2002,第6期

机译：串并联谐振变换器中的变压器漏感和交叠效应分析
2. Analysis of transformer leakage inductance and overlap effects in the series-parallel resonant converter [J] . G.A. Ward, A.J. Forsyth IEE Proceedings. Part B . 2002,第6期

机译：串并联谐振变换器中的变压器漏感和交叠效应分析
3. Performance of a series-parallel resonant DC/DC converter configured around an inductor-transformer utilizing transformer magnetics [J] . Chakraborty C., Ishida M. IEEE Transactions on Magnetics . 2000,第5期

机译：利用变压器磁学在电感变压器周围配置的串联并联谐振DC / DC转换器的性能
4. Three-phase series-parallel LCC-type DC-DC converter with capacitive output filter including the effect of HF transformer magnetizing inductance [C] . Almardy M., Bhat A.K.S. IEEE International Conference on Power Electronics and Drive Systems . 2013

机译：具有电容输出滤波器的三相串联并联LCC型DC-DC转换器，包含HF变压器励磁电感的影响
5. Technologies to Improve GaN-Based LLC Resonant Converter for Wide Input Voltage, High Output Current AC-DC and DC-DC Applications [D] . Sheng, Bo. 2020

机译：改进GaN的LLC谐振转换器的技术，用于宽输入电压，高输出电流AC-DC和DC-DC应用
6. Leakage inductance effects of output transformer on current-resonant parallel converter characteristics. [O] . H. Kiwaki 1991

机译：输出变压器对电流共振平行变换器特性的漏电电感效应。

Influence of isolation transformer leakage inductance on constant current output of Class D series-parallel LCC-type resonant converter for light-emitting diode lighting application

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