DC/DC Converter for Motor Drive—Concept, Design, and Feed-Forward Control

Abstract

Original scientific paperSolar photovoltaics is one of the most promising technologies for the non-carbon based electricity production. Power electronics is therefore necessary. In this paper a converter is analyzed which makes it possible to control the mean value of the output voltage, this is e.g. the voltage across a DC machine (and therefore the speed) from zero up to three times of the input voltage. The converter is also useful for charging batteries. The model of the drive, the design of the devices, the control features are discussed, feed-forward control based on solving the limit cycle is designed, some experimental results, and hints for the design are given.Key words: Current control, DC/DC converter, Feed-forward control DC/DC pretvarači za motorne pogone -koncept, dizajn i unaprijedno upravljanje. Solarni paneli jedni su od najznačajnijih sustava za proizvodnju električne energije koja se ne temelji na ugljenu. U te svrhe nužno je korištenje učinske elektronike. U ovome radu analiziran je ispravljač koji omogućuje upravljanje srednjom vrijednosti izlaznog napona, tj. napona u odnosu na DC ureîaj (stoga i upravljanje brzinom) u rasponu od nule pa do tri puta razine izlaznog napona. Ispravljač se takoîer može koristiti za punjenje baterija. Model i dizajn ureîaja zajedno sa sustavom upravljanja opisani su u radu. Prikazano je unaprijedno upravljanje temeljeno na rješavanju graničnih ciklusa, dani su eksperimentalni rezultati te su prikazane pojedinosti dizajniranja ureîaja.

A Non-isolated Modified Zeta Converter-fed DC Motor under Load Condition

“…Due to the above advantages of Zeta converter, it finds applications for controlling the speed of a sensorless control technique based PMBLDC motor and power factor correction on the AC side [11], in which the closed loop operation of the converter operating in continuous inductor current mode helps to achieve wide range of motor speed control by appropriate variation of DC link capacitor voltage. In [12], a step-up-down DC-DC converter is analyzed for DC motor speed control. The DC drive model, steady state behaviour, feed forward control features, and experimental results are presented in [12].…”

“…In [12], a step-up-down DC-DC converter is analyzed for DC motor speed control. The DC drive model, steady state behaviour, feed forward control features, and experimental results are presented in [12]. Some authors suggested BLDC motors for control of Electric Vehicles fed by bidirectional DC-DC converters [13].…”