System and method for optimizing fundamental frequency modulation for a cascaded multilevel inverter
A system and a method for optimizing fundamental frequency modulation in a cascaded multilevel inverter (CMI) are provided. The CMI includes at least a first H-bridge module and a second H-bridge module connected in series with the first H-bridge module. The first H-bridge module is operated according to a first duty cycle and the second H-bridge module is operated according to a second duty cycle. The first duty cycle is greater than the second duty cycle. The first and second H-bridge modules are controlled utilizing fundamental frequency modulation. A portion of the first duty cycle is transferred to the second duty cycle thereby optimizing fundamental frequency modulation by at least improving power sharing between the first and second H-bridge modules and improving equalization of DC capacitor currents and voltage ripples while maintaining the same fundamental modulation to the output voltage waveform.
- Research Organization:
- Michigan State Univ., East Lansing, MI (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AR0000222
- Assignee:
- Board of Trustees of Michigan State University (East Lansing, MI)
- Patent Number(s):
- 10,033,263
- Application Number:
- 15/188,218
- OSTI ID:
- 1464120
- Resource Relation:
- Patent File Date: 2016 Jun 21
- Country of Publication:
- United States
- Language:
- English
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