Three-level inverters with common-mode voltage cancellation based on synchronous pulsewidth modulation
2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289) - Tập 2 - Trang 863-868 vol.2
Tóm tắt
A novel method of direct synchronous pulsewidth modulation (PWM) is disseminated to three-level voltage source inverters with control algorithms with elimination of the common-mode voltages in three-phase drive systems with PWM. It provides smooth pulses-ratio changing and a quarter-wave symmetry of the voltage waveforms during the whole control range including overmodulation. Continuous, discontinuous and "direct-direct" schemes of synchronous PWM with both algebraic and trigonometric control functions have been analysed and compared. Simulations give the behaviour of the proposed methods and show some advantages of synchronous PWM in comparison with asynchronous at low ratios between the switching frequency and fundamental frequency.
Từ khóa
#Pulse inverters #Pulse width modulation inverters #Pulse modulation #Pulse width modulation #Voltage control #Space vector pulse width modulation #Switching frequency #Switches #Power engineering #Control systemsTài liệu tham khảo
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