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Showing 1 to 6 of 6 for “"AC drives"”.
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PWM strategies for multilevel multiphase AC drives
… (PWM) strategies for multilevel multiphase ac drives have been analysed in this thesis. The large amount of published work in the area of multiphase drives recognises their advantages compared to the standard three-phase solutions. Some of them arc improved power sharing capabilities, …
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Low Voltage Ride-Through for Indirect Matrix Converter Based Open-End Winding Drives
Adjustable speed drives (ASD) are one of the major load components in power systems and with the advent of wide band gap devices, which provide efficiencies greater than 95%, variable frequency drives will continue to grow and integrate into the systems. ASDs serve a varied set of processes …
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The Application of Microprocessors to Pulse-Width-Modulated Inverters
… their effect on the design of variable speed AC drives. <br/><br/>Chapter 1 includes background material where several types of variable speed A.C. drives are compared. The theoretical possibilities of various PWM schemes show that certain techniques offer improved harmonic spectrum …
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Resonance Compensation of Large AC Drivetrains with Significant Time Lag
AC main drives, such as cycloconverters, offer the possibility of higher speed and torque response over their DC counterparts. The price to be paid, however, is torque ripple which is a function of the operating frequency. Even a small value of ripple, at an underdamped plant resonant frequency, …
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Fault tolerant behavior of advanced control schemes of induction machine drives
Power electronics based variable-speed drives offer energy saving solutions, providing precise control and quick response time. They are required for sensitive process control in industrial applications and other emerging technologies such as electric vehicles. This thesis examines two popular …
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Hybrid PWM Update Method for Time Delay Compensation in Current Control Loop
… very high quality digital current control can be achieved, such as a high closed current loop bandwidth, strong robustness against disturbances, ability to reach a very high fundamental frequency compared to switching frequency, etc. In a conventional digital control implementation, a sampling …