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	Výkonost pohonu s proměnnými otáčkami při napájení nesymetrickým napětím Chomát, Miroslav ; Schreier, Luděk ; Bendl, Jiří Unsymmetrical voltages at the input of a voltage source inverter cause pulsations in the DC-link voltage when not properly taken care of. This may result in reduced power capabilities of the drive. The unbalance can be caused by a failure in the network or by unbalanced load in the vicinity of the affected drive. The paper deals with the methods to address this problem and with the limitations placed on the drive when operated from the unbalanced voltage supply. Detailed record
	Příspěvek k analýze ustáleného chodu jednofázových asynchronních motorů Schreier, Luděk ; Bendl, Jiří ; Chomát, Miroslav Single-phase induction motor are widely used in industrial applications due to their robustness, reliability and low cost. Nevertheless, they have also some disadvantages, for example ripple torques.The presented paper deals with the analysis of the properties of such machines. The possibility of reducing the pulsating components of the torque is investigated. Detailed record
	Analýza chodu pohonů s proměnnými otáčkami využívajících jednofázové motory Chomát, Miroslav ; Schreier, Luděk ; Bendl, Jiří Variable-speed operation of drives with single-phase machines is investigated. Drives of two different configurations are considered and compared to each other in the paper. Maximal achievable torque and amplitude of torque pulsations in various modes of operation are discussed. Detailed record

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