Research On Super Boost Battery Discharge Regulator With Ripple Cacellation Netwoek In Parallel

Battery discharge regulator in a battery power supply and distribution system iswidely used. In order to adapt to today’s increasingly high demand on the batterydischarge regulator power density, this project intends to design a multi-moduleparallel battery discharge regulator system and meet the requirements of the designspecifications of the various aspects, a higher power density topology is selected.This paper select the Super Boost as the batter discharge regulator topology andadd a ripple cancellation network in order to reduce the input and output currentripple. After using the Saber software simulation to determine the open-loopamplitude-frequency characteristics of a single module, the compensation network isdesigned accordingly, using average current mode control and the good static anddynamic characteristics are achieved. Testing the current ripple confirm that thisripple cancellation method can achieve better effect. Meanwhile, in many currentsharing techniques, in this paper the inner loop regulation and dual loop regulationare selected, establish the two current sharing technology multi-module parallelsystem signal model, calculate the two current sharing methods’ effects on theparallel system loop, describe the current loop design method, and summary thecurrent loop output impedance, at last, sum up the two current sharing methods’applicable occasions respectively. On this basis, using the two current sharingtechnologies to appled to the four modules Super Boost with ripple cancelarionnetwork in parallel in the simulation, further analysis of the membership of theripple cancelation network and the paralled system’s input impedance, proposeappropriate solutions. Finally, take the background of this project into consideration,select the inner loop regulation to adjust the Super Boost battery dischargeregulators in parallel experiments, testing the parallel system’s current sharingaccuracy, frequency response, output impedance and bus dynamic and staticperformance, the parallel system as a whole achieve power up to6000W, and allaspects of the performance can meet the design requirements.