Abstract:
DC-link capacitor current is a decisive factor for capacitor design and lifetime predictions. However, the conventional ripple current calculation method assumes that the...Show MoreMetadata
Abstract:
DC-link capacitor current is a decisive factor for capacitor design and lifetime predictions. However, the conventional ripple current calculation method assumes that the inverter’s output current is an ideal sinusoidal wave modulated by naturally sampled. It results in an underestimation of the capacitor current RMS against the actual value. This article proposes a method to accurately quantity the spectrum and RMS of the DC-link capacitor current, and compares the results with and without considering the carrier sideband harmonics in two-level inverter and Neutral Point Clamped (NPC) three-level inverter. This method enables accurate calculation of the spectrum of DC-link capacitor ripple current and provides more reliable results for capacitor design.
Date of Conference: 05-08 November 2023
Date Added to IEEE Xplore: 14 December 2023
ISBN Information:
ISSN Information:
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Output Current ,
- Current Harmonics ,
- Dc-link Capacitor ,
- Rms Current ,
- Ac Output Current ,
- Capacitor Current ,
- Neutral Point Clamped ,
- Simulation Results ,
- Solid Line ,
- Frequency Domain ,
- Pulse Width ,
- Vector Space ,
- Fourier Series ,
- Modulation Index ,
- Switching Function ,
- Spectrum Of Functions ,
- Lower Induction ,
- Frequency Domain Analysis ,
- Total Harmonic Distortion ,
- Output Capacitor ,
- Current Spectrum ,
- Space Vector Pulsewidth Modulation ,
- Frequency-domain Model ,
- Electric Machine ,
- Equivalent Series Resistance ,
- Maximum Absolute Error
- Author Keywords
Contents Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Output Current ,
- Current Harmonics ,
- Dc-link Capacitor ,
- Rms Current ,
- Ac Output Current ,
- Capacitor Current ,
- Neutral Point Clamped ,
- Simulation Results ,
- Solid Line ,
- Frequency Domain ,
- Pulse Width ,
- Vector Space ,
- Fourier Series ,
- Modulation Index ,
- Switching Function ,
- Spectrum Of Functions ,
- Lower Induction ,
- Frequency Domain Analysis ,
- Total Harmonic Distortion ,
- Output Capacitor ,
- Current Spectrum ,
- Space Vector Pulsewidth Modulation ,
- Frequency-domain Model ,
- Electric Machine ,
- Equivalent Series Resistance ,
- Maximum Absolute Error
- Author Keywords
