Multi-level converters have become increasingly popular due to high power quality, high-voltage capability, low switching losses, and low EMC concerns. Considering these advantages, the multi-level converter is a suitable candidate for implementation of future naval ship propulsion systems. This paper focuses on modulation techniques for the multi-level converter. In particular, a novel voltage-source method of multi-level modulation is introduced and compared to existing methods. The proposed method is discrete in nature and can therefore be readily implemented on a digital signal processor (DSP). The method is also readily extendable to any number of voltage levels. Results of experimental implementation are demonstrated using a four-level rectifier/inverter system, which incorporates diode-clamped multi-level converters and an eleven-level cascaded multi-level H-bridge inverter.
K. Corzine and J. R. Baker, "Multi-Level Voltage-Source Duty-cycle Modulation: Analysis and Implementation," Conference Record of the 2001 IEEE Industry Applications Conference, 2001. 36th IAS Annual Meeting, Institute of Electrical and Electronics Engineers (IEEE), Jan 2001.
The definitive version is available at https://doi.org/10.1109/IAS.2001.955951
2001 IEEE Industry Applications Conference, 2001. 36th IAS Annual Meeting
Electrical and Computer Engineering
Keywords and Phrases
PWM Invertors; Bridge Circuits; Digital Signal Processing Chips; Digital Signal Processor; Diode-Clamped Multi-Level Converters; Electric Propulsion; Eleven-Level Cascaded Multi-Level H-Bridge Inverter; Four-Level Rectifier/Inverter System; High-Voltage Capability; Low EMC; Low Switching Losses; Modulation Techniques; Multi-Level Converter; Multi-Level Modulation; Multi-Level Voltage-Source Duty-Cycle Modulation; Naval Engineering; Naval Ship Propulsion Systems; Rectifying Circuits; Ships; Voltage-Source Method
Article - Conference proceedings
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