Title :
Synchronization of output voltage waveforms in three-phase inverters for induction motor drives
Author :
Blaabjerg, Frede ; Oleschuk, Valentin ; Lungean, Florin
Author_Institution :
Inst. of Energy Technol., Aalborg Univ., Denmark
Abstract :
A novel method of direct synchronous pulsewidth modulation (PWM) for three-phase voltage source inverters is applied in this paper to basic continuous and discontinuous schemes of PWM. It is based on a new strategy and scheme of feedforward PWM, providing synchronization of voltage waveforms and linear voltage control during the whole range including the zone of overmodulation. Algebraic and trigonometric versions of the method proposed, based on vector approach for determination of the pulse patterns, are analyzed and compared. Examples of determination of the basic parameters of the output voltage of the inverter are presented. Simulations give the behavior of the analyzed methods and techniques. Simplicity and physical clarity are characterizing the proposed PWM method
Keywords :
PWM invertors; induction motor drives; synchronisation; voltage control; algebraic method; continuous PWM schemes; direct synchronous PWM; direct synchronous pulsewidth modulation; discontinuous PWM schemes; feedforward PWM; linear voltage control; modulation strategy; output voltage waveforms synchronization; overmodulation zone; pulse patterns; three-phase voltage source inverters; trigonometric method; voltage source inverter; Clocks; Frequency synchronization; Induction motor drives; Power engineering; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Space vector pulse width modulation; Switches; Voltage control;
Conference_Titel :
Power Conversion Conference, 2002. PCC-Osaka 2002. Proceedings of the
Conference_Location :
Osaka
Print_ISBN :
0-7803-7156-9
DOI :
10.1109/PCC.2002.997572
