DC-Chopper-Energiespeicherinduktor
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This paper deals with information that customers, suppliers, and consultants should consider when specifying a high-current DC chopper system. It deals with specification of the major
What is a DC chopper?
nt dc chopper, QIThe basic first-quadrant dc chopper circuit reproduced in figure 16.3a can be used to control a dc load s ch as a dc motor. As such, the dc load has a back-emf component,E k , the magnitude and polarity of which are dependant on the flux , (field current if) and its direction, and the speed ω
What is a chopper in energy storage?
e energy storage. The name chopper is connected with the fact that the output voltage is a ‘chopped up’ quasi-rectangular version of the input dc voltage. In chapters 13 and 14, thyristor devices were used in conjunction with an ac supply that forces thyristor turn-off at ac supply
How does a chopper circuit work?
Starting from a fixed DC voltage, it adapts the load voltage by periodically switching the input DC voltage (or current), and as such adapting the average load voltage. Two advantages are that some chopper circuits also allow energy transfer to a higher voltage level, and that the chopper principle eases electronic control.
What is the output voltage of a 340v DC chopper?
340V dc source. If the chopper is operated with a 200Hz multilevel carrier as in figure 16.22 a and b, with a modulation depth of δ = 05mH/10Ω = 5ms The average output voltage is given by equation (16.116), a witches (a sumingo 0 ). The switches T1 and T4 are turned on for 1.25ms, while T2 and T3 are subsequently tur
Can a chopper supply a DC motor?
Supplying a DC motor from a chopper is equivalent to a supply from a variable voltage source, apart from the current ripple which is to be limited by a sufficiently large inductance (for a series-excited DC machine there is already the large inductance of the excitation winding).
What is rant DC chopper?
rant dc chopper The four-quadrant H-bridge dc chopper is shown in figure 16.21 where the load current and voltage are referenced with respect to T1, so that the quadrant of operation with respect to the switch num