Design and Implementation of Motor Drives with PFC and Quasi-Sinusoidal DC Link Peak Voltage Control
碩士 === 國立臺北科技大學 === 電機工程系所 === 101 === This thesis presents a novel motor drive system by changing the DC link voltage waveform to improve the efficiency of the motor and drive system. This system consists of an AC-DC boost converter and inverter. The AC-DC boost converter consists of a three-phase...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2013
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| Online Access: | http://ndltd.ncl.edu.tw/handle/24dqzh |
| Summary: | 碩士 === 國立臺北科技大學 === 電機工程系所 === 101 === This thesis presents a novel motor drive system by changing the DC link voltage waveform to improve the efficiency of the motor and drive system. This system consists of an AC-DC boost converter and inverter. The AC-DC boost converter consists of a three-phase rectifier without the large capacitance of electrolytic capacitors, series with a conventional boost converter to provide the DC link voltage for inverter. According to none using large capacitance electrolytic capacitor which led a larger three-phase rectifier output voltage ripple, so the suppression of the effect from converter input voltage to the inverter DC link voltage is required. Boost converter output voltage based on the motor speed to generate a sinusoidal waveform that correspond to the back EMF and extend the motor constant power region via increasing the peak voltage of the DC link. So the converter needs a high bandwidth and wide ranges on output voltage. According to aforementioned, this thesis presents a controller design process to meet demands and also improve the power factor compared to conventional three-phase rectifier circuit. The inverter is driven by SVPWM. This system can achieve a lower current harmonic distortion and a higher efficiency of the overall.
The experimental system is based on the TMS320F28035 microprocessor as control core and the dynamic boost converter constructed with a 2kW 200V to 380V output voltage.
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