Equal-Area Theorem Based Direct Digital Sinusoidal Pulse-Width Modulation Method for Multilevel Voltage Inverters

Fei, W; Wu, Bin

doi:10.1080/1448837x.2011.11464292

Cited by 1 publication

(1 citation statement)

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“…The voltage vector rotates in the α-β axis, and the status of switching-transistor segments the stator axis into six sectors. Judge the position of the motor rotor, using the triangle algorithm to calculate the duty cycle of the PWM [9].…”

Section: Introductionmentioning

confidence: 99%

A hybrid PWM strategy combining modified space vector and sinusoidal pulse width modulation methods

Wang

Hao

et al. 2014

Proceeding of the 11th World Congress on Intelligent Control and Automation

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In this paper, a method of combining modified space vector control (SVPWM) and sinusoidal pulse width modulation (SPWM) control has been proposed for the threephase permanent magnet synchronous motor (PMSM). This method solves the problem of the torque ripple when the motor starts running and the hardness to control zero axis component when use SVPWM control method. The proposed method uses SPWM control method when the motor starts running or low speed to ensure the stability of the zero axis component of the control system, and utilize the SVPWM method when the motor at high speed to ensure the stability of the torque ripple of the system. So the method made full use of the advantages of SVPWM and SPWM method respectively. Dynamic response and power quality performance are comparatively analyzed for this method. This method uses PI-IP control structure to further improve the robustness of the control system and the response performance. The simulation and experimental results show the dynamic response of the control structure. In order to guarantee the validity of the data, utilize a high precision identification system to guarantee the precision of the parameter used in control system. This paper gives a detailed description of how to use the method mentioned to realize the PWM output and the control structure used. This method is more efficiently and generates less harmonic distortion when compared with traditional method. Index Terms -space vector PWM (SVPWM); sinusoidal pulse width modulation (SPWM); proportion -integration (PI) and integration -proportion (IP); identification system

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Section: Introductionmentioning

confidence: 99%