Generalized scalar PWM algorithm for three-level diode clamped inverter fed induction motor drives with reduced complexity
Обобщённый скалярный алгоритм ШИМ для трехуровневого инвертора с диодным зажимом, питающего приводы асинхронных двигателей, с уменьшенной сложностью
2012-08-01
SCID: 54.1/czgzcw84
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DPWMGPWMSVPWMdiode-clamped inverterdiscontinuous pulsewidth modulationgeneralized scalar pulsewidth modulationinstantaneous phase voltagesreduced complexityspace vector pulsewidth modulationthree-level diode-clamped inverterv/f controlled induction motor drivezero sequence signalzero state time partition parameter
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Abstract (AI)
This paper presents a simple generalized scalar pulsewidth modulation (GPWM) algorithm with reduced complexity for three-level diode-clamped inverter fed induction motor drives. The proposed GPWM algorithm uses the instantaneous phase voltages only to generate the modulating waveforms.. The sampled reference phase voltages are added with a unique zero sequence signal in order to generate required modulating waveforms. By varying the zero state time partition parameter (k <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf> ) in the zero sequence signal, various discontinuous pulsewidth modulation (DPWM) algorithms along with space vector pulsewidth modulation (SVPWM) algorithm can be generated in the linear modulation region. To validate the proposed algorithm numerical simulation studies have been carried out on v/f controlled induction motor drive and results are presented.
Key Findings
1
A simple generalized scalar PWM (GPWM) algorithm with reduced complexity is developed for three-level diode-clamped inverter fed induction motor drives.
2
Numerical simulation studies on a v/f controlled induction motor drive validate the proposed GPWM algorithm and its operation.
3
The GPWM algorithm generates modulating waveforms using only instantaneous sampled phase voltages combined with a unique zero-sequence signal.
4
Varying the zero-state time partition parameter k (k<0) in the zero-sequence signal enables generation of various discontinuous PWM (DPWM) schemes and the SVPWM algorithm within the linear modulation region.
Research Object
Three-level diode-clamped inverter fed induction motor drive system using v/f control
Research Subject
Generalized scalar pulse-width modulation (GPWM) algorithm using instantaneous phase voltages and zero-sequence injection (varying zero-state time partition k) to generate DPWM and SVPWM variants with reduced complexity
Publication Details
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2012-08-01
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