A current control method for bidirectional multiphase DC-DC boost-buck converter

Abstract

<span>In the future, more and more electric vehicle (EV) batteries are connected to the direct current (DC) microgrid. Depending on the battery state of charge, the battery voltage can be higher or lower than the DC microgrid voltage. A converter that is aimed to fulfil such function must be capable of working in both charging and discharging regardless the voltage level of the battery and DC microgrid. Battery performance degradation due to ripple current entering the battery is also a concern. In this paper, a converter that can minimize ripple current that entering battery and operate in two power-flow directions regardless of battery and DC microgrid voltage level is presented. A current control method for this kind of converter was proposed. Experiment on a prototype was conducted to prove the proposed converter current control method.</span>

A bidirectional power converter connecting electric vehicle battery and DC microgrid

“…Power was measured on both sides of the proposed converter using a power meter, as shown in Figure 6. A bidirectional power flow control is not shown in this paper, but it is discussed in another experimental research paper of detailed control method [29]. The power flow control can be done by varying the duty cycle of B-part (microgrid side) switches.…”

Inter-connected AC/DC HMGS power management with 3-phase and 1-phase ILC

“…A control method for charging and discharging of battery energy storage system (BESS) is considered from [25]. AC/DC MG is integrated with BESS is referred from [26].…”

Conducted electromagnetic interference mitigation in super-lift Luo-converter for electric vehicle applications

“…The gain has been increased by the duty cycle. The energy from inductor L 1 and capacitor C 1 is reached R through C 2. as shown in Figure 1 The ripple of inductor current i L1 is given by (1).…”

“…Electromagnetic interference (EMI) is an obnoxious noise that degrades the functioning of power electronics-based equipment used in daily life such as home appliances and various industries by emitting both conducted and radiated electromagnetics into the environment [1]. Due to the sudden increase in current and voltage caused by the fast-switching process in the circuits, EMI noise has been generated in various direct current to direct current (DC-DC) converters.…”