2017
DOI: 10.1109/tpel.2016.2526684
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Abstract: Abstract-This paper presents a fault tolerant configuration for the modular multilevel converter (MMC). The procedure is able to detect faults in voltage sensors and semiconductor switching devices, and it can reconfigure the system so that it can keep on operating. Both switch and sensor faults can be detected by comparing the output voltage of a set of submodules (SMs), which is measured by a so-called supervisory sensor, with two calculated reference voltages. Faults in the supervisory sensors are also cons… Show more

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Cited by 103 publications
(38 citation statements)
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“…Karbalaei and Shahbazi 16 presented a new method for predicting voltage trajectory; the calculation takes little time with retained precision. Picas et al 17 proposed a fault-tolerant configuration for the modular multilevel converters to detect faults in voltage sensors and semiconductor switching devices; the procedure is able to detect both switch and sensor faults by comparing the output voltage of a set of submodules. Youssef et al 18 designed a new open-circuit fault detection and isolation approach; this technology is based on residual generation between measured and observed current form factors with an adaptive threshold.…”
Section: Literature Reviewmentioning
confidence: 99%
“…Karbalaei and Shahbazi 16 presented a new method for predicting voltage trajectory; the calculation takes little time with retained precision. Picas et al 17 proposed a fault-tolerant configuration for the modular multilevel converters to detect faults in voltage sensors and semiconductor switching devices; the procedure is able to detect both switch and sensor faults by comparing the output voltage of a set of submodules. Youssef et al 18 designed a new open-circuit fault detection and isolation approach; this technology is based on residual generation between measured and observed current form factors with an adaptive threshold.…”
Section: Literature Reviewmentioning
confidence: 99%
“…The SM voltage estimation values for the upper arm are then updated with the error calculated using (16) and the Kalman gain derived from (15) and the previously estimated values ̂( −1 ) . Therefore, to estimate these voltages in one prediction step ahead, the upper SM voltage estimated values can be identified as follows:…”
Section: B Proposed Kalman Filter Voltage Estimationmentioning
confidence: 99%
“…This paper proposes a new voltage estimation scheme which aims to reduce the number of voltage sensors required in the MMC. The arrangement of sensors used is similar to those presented in previous studies [14,15]. However, the proposed scheme uses only one voltage sensor per arm to achieve the voltage-balancing of the converter.…”
Section: Introductionmentioning
confidence: 99%
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“…The above-mentioned methods are based on measured electrical signals and control strategies. Other solutions are based on hardware change by adding an extra voltage sensor in each arm of the MMC [22], or by rearranging the voltage sensor position to measure the output voltage of submodule [23,24].…”
Section: Introductionmentioning
confidence: 99%