An Open-Switch Fault Detection Method and Tolerance Controls Based on SVM in a Grid-Connected T-Type Rectifier With Unity Power Factor

Lee, June-Seok; Lee, Kyo‐Beum

doi:10.1109/tie.2014.2316228

Cited by 132 publications

(44 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, in sectors Ι and VΙ, the N-type small-vectors OON, ONN, and ONO are changed to the P-type small-vectors PPO, POO, and POP. When an S a2 open-switch fault occurs, the changing vector methods in sectors Ι, ΙΙΙ, ΙV, and VΙ are the same as those of the M3LS tolerance control in [14]. The M3LS tolerance control uses two-level switching in sectors ΙΙ and V. However, the two-level switching increases the switching loss of the three-phase switches.…”

Section: A Tolerance Operation At a High Modulation Indexmentioning

confidence: 99%

“…These tolerance controls do not completely eliminate current distortion because of structural limitations of the NPC-type topology. In [14], there are two tolerance controls, which do not require additional devices, for the inner open-switch faults (S x2 and S x3 ) of an T-type rectifier with a high modulation index. These two methods are the replacement two-level switching (R2LS) and the maintenance three-level switching (M3LS) tolerance controls.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tolerance Control for the Inner Open-Switch Faults of a T-Type Three-Level Rectifier

Lee¹,

Lee²

2014

Journal of Power Electronics

Self Cite

View full text Add to dashboard Cite

The T-type topology is a three-level topology that has an advantage in terms of its number of switching device and its efficiency when compared to the neutral-point clamped (NPC)-type topology. With the recent increase in the usage of the T-type topology, the interest in its reliability has also increased. Therefore, a tolerance control for a T-type rectifier is necessary to improve the reliability of applications when an open-switch fault occurs. NPC-type rectifiers cannot eliminate input current distortion completely. However, the T-type rectifier is able to restore distorted current. In this paper, a tolerance control for the S x2 and S x3 open-switch faults of a T-type rectifier is proposed where it is advantageous in terms of efficiency when compared with other tolerance controls. The performance of the proposed tolerance control is verified through simulation and experimental results.

show abstract

Section: A Tolerance Operation At a High Modulation Indexmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tolerance Control for the Inner Open-Switch Faults of a T-Type Three-Level Rectifier

Lee¹,

Lee²

2014

Journal of Power Electronics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Proposed integrated battery charger topology is so reliable because of the anti-shoot-through structure. In these systems, open-switch fault detection methods should be considered [19,20]. In this paper, the novel current sharing function applied on the EV SRM battery charger, which in charging condition the power circuit is reconfigured to be a part of the integral charger, and its merits are fully verified with compact experimental results.…”

Section: Introductionmentioning

confidence: 97%

Zero Torque Control of Switched Reluctance Motor for Integral Charging

Rashidi¹,

Namazi²,

Saghaian³

et al. 2017

The Transactions of The Korean Institute of Electrical Engineer

View full text Add to dashboard Cite

-In this paper, a zero torque control scheme adopting current sharing function (CSF) used in integrated Switched Reluctance Motor (SRM) drive with DC battery charger is proposed. The proposed control scheme is able to achieve the keeping position (KP), zero torque (ZT) and power factor correction (PFC) at the same time with a simple novel current sharing function algorithm. The proposed CSF makes the proper reference for each phase windings of SRM to satisfy the total charging current of the battery with zero torque output to hold still position with power factor correction, and the copper loss minimization during of battery charging is also achieved during this process. Based on these, CSFs can be used without any recalculation of the optimal current at every sampling time. In this proposed integrated battery charger system, the cost effective, volume and weight reduction and power enlargement is realized by function multiplexing of the motor winding and asymmetric SR converter. By using the phase winding as large inductors for charging process, and taking the asymmetric SR converter as an interleaved converter with boost mode operation, the EV can be charged effectively and successfully with minimum integral system. In this integral system, there is a position sliding mode controller used to overcome any uncertainty such as mutual inductance or DC offset current sensor. Power factor correction and voltage adaption are obtained with three-phase buck type converter (or current source rectifier) that is cascaded with conventional SRM, one for wide input and output voltage range. The practicability is validated by the simulation and experimental results by using a laboratory 3-hp SRM setup based on TI TMS320F28335 platform.

show abstract

“…If the open fault is not dealt with in time, the voltage stress of certain switch will increase owing to the fluctuation of capacitor neutral-point voltages. What is worse, the entire circuit operates abnormally, causing serious accidents or incalculable economic losses [7][8][9]. In some applications, higher reliability of the circuit is required that it is even expected that the circuit should keep working for a period under the device failures.…”

Section: Introductionmentioning

confidence: 99%

Fault-Tolerant Control Strategy for Neutral-Point-Clamped Three-Level Inverter

Shen

Beibei

et al. 2018

Journal of Control Science and Engineering

View full text Add to dashboard Cite

A fault-tolerant control technique is discussed for the Neutral-Point-Clamped (NPC) three-level inverter, which ensures that the NPC inverter operates normally even under device failures. A two-level leg is added to the NPC inverter; when the device open circuit fault occurs, the load of this faulty phase is connected to the neutral point of this two-level leg through the bidirectional thyristors. An improved Space Vector Pulse Width Modulation (SVPWM) strategy called "addition and subtraction substitution SVPWM" is proposed to effectively suppress fluctuation in capacitor neutral-point voltages by readjusting the sequence and action time of voltage vectors. The fault-tolerant topology in this paper has the advantages of fewer switching devices and lower circuit costs. Experimental results show that the proposed fault-tolerant system can operate in balance of capacitor neutral-point voltages at full output power and the reliability of the inverter is greatly enhanced.

show abstract

An Open-Switch Fault Detection Method and Tolerance Controls Based on SVM in a Grid-Connected T-Type Rectifier With Unity Power Factor

Cited by 132 publications

References 27 publications

Tolerance Control for the Inner Open-Switch Faults of a T-Type Three-Level Rectifier

Tolerance Control for the Inner Open-Switch Faults of a T-Type Three-Level Rectifier

Zero Torque Control of Switched Reluctance Motor for Integral Charging

Fault-Tolerant Control Strategy for Neutral-Point-Clamped Three-Level Inverter

Contact Info

Product

Resources

About