Abstract
In this paper, the performance of space vector pulse width modulation (SVPWM), sinusoidal pulse width modulation (SPWM) and hysteresis current control (HCC) techniques used in speed control with back to back converter of permanent magnet synchronous generator (PMSG) used in wind turbines are comparatively analyzed. The comparative analysis includes dynamic response, total harmonic distortion (THD), torque ripple and current ripple. Furthermore, SVPWM and SPWM are compared in terms of the using DC link voltage. Analysis of system is realized with MATLAB/Simulink program. PMSG used in simulations is surface mounted, bipolar and its power is 1.8 kW. Also, the energy of PMSG is transferred to grid with Field Oriented Control (FOC). According to analysis results, it has been observed that SVPWM generally has more effective results than both HCC and SPWM control techniques. Finally, it is observed that SVPWM can produce about 15 percent higher than SPWM in output voltage.
Highlights
The utilization of renewable energy sources is becoming increasingly important in terms of energy efficiency in recent years
Comparison of space vector pulse width modulation (SVPWM), sinusoidal pulse width modulation (SPWM) and hysteresis current control (HCC) control techniques used to obtain converter switch signals in speed control of permanent magnet synchronous generator (PMSG) are analyzed in terms of dynamic response, harmonic content, torque ripple and current ripple with MATLAB/Simulink
The performance of system is tested in MATLAB/Simulink by using SVPWM, SPWM and HCC in the control of SMSG
Summary
The utilization of renewable energy sources is becoming increasingly important in terms of energy efficiency in recent years. In [11], space vector pulse width modulation (SVPWM) and hysteresis current control (HCC) techniques are compared in terms of total harmonic distortion (THD) and dynamic response. It claims that SVPWM has better results than HCC. In this paper unlike previous studies in the literatures, the effects to system of three different pulse width modulation (PWM) control techniques in the speed control of PMSG used in wind power systems are compared under the same conditions as terms of dynamics response, THD, torque ripple and current ripple. FOC for generator-side converter and the current loop control diagram is shown Figure 1
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