Control of three-phase buck-type rectifier in discontinuous current mode

Guo, Ben; Wang, Fred; Burgos, Rolando; Aeloiza, Eddy

doi:10.1109/ecce.2013.6647355

Cited by 9 publications

(3 citation statements)

References 21 publications

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“…The switching modulation scheme with two operating states and operating modes are shown in Figures 6 and 7, respectively. Similar to the DC-DC buck converter, The conventional AC-DC rectifiers, including the buck rectifier, cannot isolate the output terminal under a fault case [4][5][6][7][8]11,12]. Therefore, the system can be damaged by using the conventional rectifier.…”

Section: Three-phase Buck Rectifier With Thyristormentioning

confidence: 99%

“…Therefore, as shown in Figure 3, the DAB converter employing the battery is proposed as a UPS to stabilize the DC-link voltage of the DC bus. The DAB converter shown in Figure 10 has been widely used in DC distribution systems, and it is selected for the UPS due to its various advantages, such as a bidirectional power flow capability, a Compared with the conventional buck rectifiers [11,12], the operating reliability against the switch-short conditions is well verified, and the isolation capability to protect the output terminal from the AC grid is given by the proposed buck rectifier. Since the shoot-through fault can be prevented in the buck rectifier, during the short-switch fault, the output voltage can still be regulated to the reference voltage level, as shown in Figure 9.…”

Section: Dual-active-bridge Converter With Protection Algorithmmentioning

confidence: 99%

“…In addition, this topology does not have the shoot-through problem in a switch fault case. Compared with conventional three-phase buck rectifiers [11,12], this paper analyzes the operation and regulation performance of the rectifier under the shoot-through failure. The circuit operation under the switch-short condition is analyzed for the buck rectifier to verify the output voltage regulation performance.…”

Section: Introductionmentioning

confidence: 99%

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Analysis and Design of Three-Phase Buck Rectifier Employing UPS to Supply High Reliable DC Power

et al. 2020

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In the DC distribution system, to step down the DC voltage level from the AC grid voltage, the conventional topologies require multiple power conversion stages and bulky line-frequency transformers, which degrade their power density and cost-effectiveness. In addition, the conventional topologies suffer from a shoot-through problem resulting in their low system reliability. In this paper, to overcome the above issues, systematic design approaches of a three-phase buck rectifier with an uninterruptible power supply (UPS) and a protection algorithm are proposed to obtain the high reliability of the DC distribution system, which can deal with fault conditions and can regulate the output voltage level. It only requires a single stage of the three-phase buck rectifier. Also, a thyristor switch is added without any commutation circuits to cut off the output from the fault circuit. The shoot-through faults do not occur in the buck rectifier, leading to high reliability. A dual-active-bridge (DAB) DC-DC converter is applied as the UPS to supply the electric power from the battery when the buck rectifier is shut down under the fault conditions. Finally, the protection algorithm is proposed to detect the fault conditions and to regulate the output voltage level.

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