Double‐boost switched‐resonator converter

Jabbari, Masoud; Tehrani, Uosef Dadkhah

doi:10.1049/iet-pel.2017.0490

Cited by 6 publications

(4 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Substituting (10) and (13) into (19), and dividing V op1 by V c1 , the parameter K 1p can be introduced as follows:…”

Section: Discontinuous Current Conduction Modementioning

confidence: 99%

“…An automatic interleaved Dickson SCC family that ensured ZVS and small output voltage ripple and lower capacitor voltage stress were also introduced [18]. A hybrid circuit between SCCs and switched‐resonator converters could solve the problem of usual SCCs when each switch needs a floating gate driver [19]. The disadvantages of SCCs are high EMI, a high ripple in the output voltage and huge voltage spikes across the switching devices, and very often the disability to provide ZVS and ZCS [20].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Control features of a four channel resonant buck converter

Litvani

Hamar

2019

IET Power Electronics

View full text Add to dashboard Cite

This study presents the steady-state behaviour of a new four channel resonant DC/DC buck converter in symmetrical operation both in continuous current conduction mode (CCM) and in discontinuous current conduction mode (DCM). Having two inputs and four outputs, one of the most important advantages of this converter is its capability to provide four identical or arbitrarily different output voltages, while power exchange between the input channels facilitates the smooth operation even when one of the inputs falls out (security power supply). The converter can be operated in zero-current switching and zerovoltage switching conditions that results in enhanced efficiency. The quasi-sinusoidal waveforms help to lower electromagnetic interference. The analysis revealed the relations among input and output voltages as well as the effect of control variables on the steady-state operation. The obtained theoretical results are verified by both computer simulations and measurements on a recently built experimental prototype. The analytical results and control characteristics are devoted to design such converters and develop control strategies for them.

show abstract

“…Substituting (10) and (13) into (19), and dividing V op1 by V c1 , the parameter K 1p can be introduced as follows:…”

Section: Discontinuous Current Conduction Modementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Control features of a four channel resonant buck converter

Litvani

Hamar

2019

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…On the other hand, the service life of energy sources will also be affected by a current spike in hard switching circuits. In this paper, a novel balancing circuit is proposed to realize zero-current switching (ZCS) similar to quasi-resonant [24,25] during the switched-capacitor mode and has been proven to further reduce energy loss [24][25][26][27][28][29].Different states of EVs, such as the drive state, brake state, and park state, may have different requirements on the output power, balancing speed, and balancing loss. Many existing papers [22,23] do not take the real driving state into account and make a fixed cell balancing strategy, which decreases the overall balancing efficiency [30][31][32][33].…”

mentioning

confidence: 99%

mentioning

confidence: 99%

Zero Current Switching Switched-Capacitors Balancing Circuit for Energy Storage Cell Equalization and Its Associated Hybrid Circuit with Classical Buck-Boost

2019

View full text Add to dashboard Cite

To overcome the problem of switching loss during the balancing process, a novel cell balancing circuit is proposed with the integration of a zero current switching technique. Moreover, the balancing circuit proposed can change between a classical buck-boost pattern and a resonant switched-capacitor pattern with flexible control to cater to the balancing requirements under different driving scenarios. The results of the simulation of field experiments demonstrate successful balancing, various balancing speed, and low energy loss. The proposed balancing circuit proves to be effective for a wide range of application and is the first attempt to integrate a dual balancing function in a single balancing circuit for cells.Energies 2019, 12, 2726 2 of 15 However, those methods are not flexible enough for changing scenarios. Furthermore, as a hard switching operation is adopted in a large number of cell balancing circuits [21][22][23], electromagnetic interference (EMI) and high switching energy loss will appear. On the other hand, the service life of energy sources will also be affected by a current spike in hard switching circuits. In this paper, a novel balancing circuit is proposed to realize zero-current switching (ZCS) similar to quasi-resonant [24,25] during the switched-capacitor mode and has been proven to further reduce energy loss [24][25][26][27][28][29].Different states of EVs, such as the drive state, brake state, and park state, may have different requirements on the output power, balancing speed, and balancing loss. Many existing papers [22,23] do not take the real driving state into account and make a fixed cell balancing strategy, which decreases the overall balancing efficiency [30][31][32][33]. They are based on switched-capacitor techniques [34,35]. Some papers have realized the difference in energy management at different driving states and proposed specific energy controllers respectively. The energy saving controller for electric mining trucks is introduced in Reference [36], as it runs in high-frequency start-up processes. A predictive energy controller based on preceding vehicle movement management is designed in Reference [37] for lined up EVs on the road. A real-time energy controller for EVs in a charge-depletion mode is discussed in References [38][39][40] for adaptive energy consumption minimization.In this paper, a novel and multi-functional balancing circuit is proposed with a ZCS technique to improve energy saving during the balancing process. The multi-functional circuit can easily change between a buck-boost pattern and switched-capacitor pattern with flexible switching frequency and duty ratios, i.e., the circuit can adapt to changing driving states. Figure 1 demonstrates six different operating modes with different cell balancing requirements for the corresponding driving states. Moreover, voltage sensors can be installed at each cell in order to collect the voltage signals for an intelligent control box. In the real-time feedback control, switching frequency and duty ratios are adjus...

show abstract