18 · What does the term "a direct ac converter" mean without rectifying without energy storage · What is the most obvious use of the cycloconverter low-frequency · Why does a matrix converter need full controlled devices to change current · Why a device is called as "dc link converter" internal dc circuit · What does the dc link converter consist of rectifier inverter capacitor · What are the applications fields of cycloconverters rolling mills · What does a continuous current means non-pulsing · Call the difference of half-bridge and full-bridge dc/dc converters input/output voltage ratio · Why the transformer-isolated converters are used voltage set-up · Why the back diodes are required current reversing · In the steady state mode, the drive has pulsations ripples · In the very accurate drive, the over-speed is 1..10% · The mechanical time constant will be high if Td is low · The friction torque is passive
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