Back to Search
Start Over
Five-level diode-clamped PWM converters connected back-to-back for motor drives
- Source :
- IEEE Transactions on Industry Applications. July-August, 2008, Vol. 44 Issue 4, p1268, 9 p.
- Publication Year :
- 2008
-
Abstract
- This paper addresses a transformerless mediumvoltage adjustable-speed motor drive consisting of two five-level diode-clamped PWM converters connected back-to-back. It is followed by designing, constructing, and testing a 200-V downscaled model to verify the validity and effectiveness of the medium-voltage motor drive. This downscaled model has four split dc capacitors equipped with a voltage-balancing circuit using two bidirectional buck-boost choppers. The two five-level converters are based on sinusoidal pulsewidth modulation with a carrier frequency of 3 kHz. The motor tested in this paper is a three-phase four-pole induction motor rated at 200 V, 5.5 kW, and 60 Hz. Experimental waveforms show that the four split dc-capacitor voltages are well balanced in any operating conditions and that the total harmonic distortion values of the input line current and the output motor current are 3.9% and 3.5%, respectively. Index Terms--Medium-voltage drives, multilevel inverters, neutral-point-clamped converters, voltage balancing.
- Subjects :
- Electric current converters -- Design and construction
Pulse-duration modulation -- Methods
Voltage -- Control
Voltage -- Measurement
Clamping circuits -- Design and construction
Diodes -- Usage
Electric driving -- Equipment and supplies
Electric current converter
Business
Computers
Electronics
Electronics and electrical industries
Subjects
Details
- Language :
- English
- ISSN :
- 00939994
- Volume :
- 44
- Issue :
- 4
- Database :
- Gale General OneFile
- Journal :
- IEEE Transactions on Industry Applications
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.183489105