Spread Spectrum Modulation under Second Harmonic Distortions in Two-Stage Converters
A spread spectrum modulation (SSM) using the second harmonic distortion of a boost power factor correction (PFC) rectifier is proposed. In a system where a boost PFC is connected to an LLC resonant converter in series, the LLC resonant converter employs the SSM to mitigate electromagnetic (EM) noise without control. Operating the SSM near the resonant frequency enhances efficiency while the boost PFC manages the output voltage. However, SSM-induced frequency variations can lead to significant output voltage fluctuations. The proposed method can compensate for those fluctuations by synchronizing the SSM with the second harmonic ripple of the boost PFC. This approach is cost-effective and simpler than conventional methods. In addition, the proposed SSM can reduce the EM noise. The proposed method will be verified by using an 800 W prototype converter.
Authors
- Hwa-Pyeong Park (ORCID: https://orcid.org/0000-0001-7633-7871)
- Jee‐Hoon Jung (ORCID: https://orcid.org/0000-0002-4055-3764)
- Kyung-Wook Heo (ORCID: https://orcid.org/0000-0002-2161-6969)
- Hyun-Jun Choi (ORCID: https://orcid.org/0000-0002-8479-9256)
- Jingook Kim (ORCID: https://orcid.org/0000-0001-6570-7785)
- Mina Kim (ORCID: https://orcid.org/0000-0002-6575-6584)
Institutions
- Kumoh National Institute of Technology (KR)
- Hanbat National University (KR)
- Korea Electronics Technology Institute (KR)
- Ulsan National Institute of Science and Technology (KR)
Publication Details
- Published
- 2024-09-02
- DOI
- https://doi.org/10.1109/ecceeurope62508.2024.10751965
- Citations
- 1
- Primary Topic
- Induction Heating and Inverter Technology
- Type
- article
- Field-Weighted Citation Impact
- 0.21
Funders
- National Research Foundation of Korea