Bipolar Steep Pulse Current Source for Highly Inductive Load

PROJECT TITLE :

Bipolar Steep Pulse Current Source for Highly Inductive Load

ABSTRACT:

A bipolar pulse current supply is proposed for a highly inductive load. The present source exploits a noninductive capacitor to store or unharness the energy back to and from inductive load during switching on or off of power inverter. A boost module is meant at the dc aspect of inverter to supplement the required energy gap therefore that edge steepness of the load current can be improved. The capacitor and boost components are configured based mostly on the analysis of capacitor impact on the load current and boost inductor current. The stability of load current can be guaranteed by the multiple driving pulses generated from closed-loop control of boost switch, regardless of load changes or initial pulse width offset. An experiment prototype is constructed to come up with a flat-prime twenty A current with the two hundred μs rise/fall time for an inductive load of two mH or higher. Due to the steep rising and falling edges, the inductive load can understand high-frequency pulse currents. Moreover, the steep pulse current source can excite sturdy magnetic field, that build it particularly helpful for the inductive coils of high-power geophysical transient electromagnetic methodology (TEM) transmitter.

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