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Modulation method and apparatus to reduce EMI in a power converter

總結

A modulation scheme that mitigates electromagnetic interference (EMI) in quasi Z source DC-DC power converters

技術優勢

Minimal change to existing power converter circuits
Can be adapted for use in a variety of converter circuits.
Can be used with single, double and four-switch circuits
Especially useful for reducing EMI generated by high-speed switches such as GaN HEMTs.

技術應用

Switch-mode converters and motor drives, including those requiring an isolation transformer.
Well-suited to renewable energy applications (large voltage gain), biomedical electronics (low interference), compact high-frequency converters (commercial and portable electronics)

詳細技術說明

A novel modulation technique which is simple to implement and also suitable for use with H-bridge switch-mode converters (4 switching devices, 3 circuit states).
The modulation method results in approximately 10 dB suppression of EMI, and is particularly suited for use in impedance-source converters, i.e. an emerging H-bridge based converter topology with several advantages over other converters, including a large voltage gain.

合作類型

Licensing

申請號碼

WO 2017/120644

ID號碼

2016002

國家/地區

澳洲