Reduced harmonics PWM controlled line-side converter for electric drives. [Pulse Width Modulation]
- Univ. of Wuppertal (Germany). Electrical Machines and Drives Lab.
The concept for a reduced-harmonics PWM modulator, as applied for the control of a line-side power converter for a speed-variable ac-drive, is described. The PWM algorithm determines the on-state duration of each switching vector based on the observation of the time variable voltage reference vector. Since there is no reference made to a constant-frequency carrier signal, the generated pulse patterns become asynchronous. It is the essential property of this method to produce a quasi continuous harmonic spectrum in which all frequency components have more or less equal magnitudes. This is an advantage as compared with carrier-based PWM control schemes that exhibit high-amplitude carrier and side-band components in their harmonic spectra. The emission of acoustic noise radiated from the ac filter inductor is reduced.
- OSTI ID:
- 6019839
- Journal Information:
- IEEE Transactions on Industry Applications (Institute of Electrical and Electronics Engineers); (United States), Vol. 29:4; ISSN 0093-9994
- Country of Publication:
- United States
- Language:
- English
Similar Records
Low Frequency Ripple Reduction in Input DC Current and AC Line Currents With 240$^{\circ }$ Clamped Space Vector PWM in Grid-Connected Photovoltaic Converters
Reduced Common-Mode Voltage PWM Scheme for Full-SiC Three-Level Uninterruptible Power Supply With Small DC-Link Capacitors
Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ELECTRIC MOTORS
POWER CONDITIONING CIRCUITS
ALGORITHMS
DESIGN
HARMONICS
MITIGATION
MODULATION
PROCESS CONTROL
TECHNOLOGY ASSESSMENT
CONTROL
ELECTRONIC CIRCUITS
ENGINES
MATHEMATICAL LOGIC
MOTORS
OSCILLATIONS
240201* - Power System Networks
Transmission & Distribution- AC Systems- (1990-)
320303 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes