A multilevel voltage-source converter system with balanced dc voltages
- Tennessee Univ., Knoxville, TN (United States)
- Oak Ridge National Lab., TN (United States)
A multilevel voltage-source converter system is proposed for high-voltage, high-power applications such as large induction motor drives, back-to-back interconnected power systems, and electrical traction drives. Multilevel voltage-source converters have a voltage unbalance problem in the dc capacitors. The problem may be solved by use of additional voltage regulators or separate dc sources. However, these solutions are found not to be practicable for most applications. The proposed converter system can solve the voltage unbalance problem of the conventional multilevel voltage-source converters, without using any additional voltage balance circuits or separate voltage sources. Mechanism of the voltage unbalance problem is analyzed theoretically in this paper. The validity of the new converter system is demonstrated by simulation and experiment.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 71669
- Report Number(s):
- CONF-950610-1; ON: DE95009695
- Resource Relation:
- Conference: Power electronics specialist conference, Atlanta, GA (United States), 12-15 Jun 1995; Other Information: PBD: [1995]
- Country of Publication:
- United States
- Language:
- English
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