A New PDM Power Control Technology for the Resonant Inverter

Abstract:

Pulse density modulation (PDM) can be used to regulate the output power of the resonant converter. However, in some case of low Q value, the output current is discontinuous and unstable in light load condition which is regulated by PDM. In order to solve this problem, a new Hybrid Pulse Density Modulation method is proposed. The principle of the Hybrid Pulse Density Modulation technique and the control method are analyzed in detail. Through experiments, it is proven that this method not only has the advantages of symmetrical control pulse distribution, smooth and continuous output current, simple control. It also achieves modular design, we can adjust the levels of the inverters output power flexibly through change the number of the basic control module.

• Periodical: Advanced Materials Research (Volume 744)
• Pages: 552-555
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.744.552
• Online since: August 2013
• Authors: Zhi Bin Lu, Yong Long Peng, Ya Bin Li
• Keywords: Control Pulse, Hybrid Pulse Density Modulation, Power Regulation, Resonant Inverter

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