ELECTROMAGNETIC TYPE RETARDER WITH MULTI-FUNCTIONS
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United States of America Patent
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Issued Date -
Nov 19, 2015
app pub date -
Mar 3, 2014
filing date -
Mar 3, 2014
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Abandoned
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Abstract
An electromagnetic retarder includes a stator yoke, a plurality of magnetic coils, and a steel rotor; a control device; a driving device for a high revolution region having transistors; and a driving device for a low revolution region having a battery, a diode for inhibiting reverse current, and transistors. The magnetic coils of each phase are coupled with capacitors so as to form a resonance circuit. Each of the transistors for the high revolution region is coupled in series to each of the multi-phase connections. Each of the transistors for the low revolution region is connected in series to each of the multi-phase connections through the battery and the diode. At the high revolution region, the magnetic coils are excited by an electric power obtained from a braking energy, and at the low revolution region, the magnetic coils are excited by an electric power obtained from the battery.
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