Discrete pulse modulation strategies for high-frequency inverter systems
- Montana State Univ., Bozeman, MT (United States). Dept. of Electrical Engineering
- Univ. of Wisconsin, Madison, WI (United States). Dept. of Electrical and Computer Engineering
- General Electric Co., Schenectady, NY (United States)
High-performance high-frequency inverter systems for UPS applications represent a demanding application that cannot be easily realized using conventional hard-switched PWM inverter topologies. Adoption of typical soft-switched inverters such as the resonant dc link inverter require the use of discrete pulse modulation strategies. New controller structures are necessary to cope with stringent voltage regulation and distortion constraints in the presence of unbalanced and nonlinear loads. This paper presents a controller that utilizes load current feed-forward strategy with a cost function current regulator to achieve excellent transient performance characteristics. Voltage regulation is ensured using a synchronous frame regulator. Detailed simulation and experimental results verifying the concepts are presented. Although this paper focuses on soft-switching inverters, the control concepts can be applied to conventional hard-switching inverters as well.
- OSTI ID:
- 5887753
- Journal Information:
- IEEE Transactions on Power Electronics (Institute of Electrical and Electronics Engineers); (United States), Vol. 8:3; ISSN 0885-8993
- Country of Publication:
- United States
- Language:
- English
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INVERTERS
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PULSE CIRCUITS
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FUNCTION GENERATORS
240201* - Power System Networks
Transmission & Distribution- AC Systems- (1990-)