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The modular paralleled three-level T-Type Inverters (3LT2Is) have been widely used to extend the power capacity. However, zero-sequence circulating currents (ZSCCs) are generated due to the difference of parameters between the paralleled inverters. The ZSCCs will lead to various issues, such as output current distortion, unbalanced current distribution and system loss increasing, etc. The finite control...
The three-level (3L) Active Neutral-Point-Clamped (ANPC) topology has been introduced to resolve the uneven loss distribution issue in the classical 3L Neutral-Point-Clamped (NPC) topology. The Pulse-Width-Modulation (PWM) strategy is then an important means to fully explore the potential benefits of the 3L-ANPC topology. This paper presents a novel loss balancing modulation strategy — Splitting Switching...
At present, the checking and designing of SCD's virtual terminal in smart substation are used by hand, and their rationalities are not easy to be verified. This paper studied a kind of searching and analyzing method of device virtual links based on historical SCDs. The virtual links are extracted from a number of existed SCDs, and stored into the database as the templates. For the SCD's receiving...
Modular multilevel converter (MMC) has drawn tremendous attention in the academia and industry since its invention, and it is considered as a very suitable solution for the high-power applications. It is usually composited by a large number of half-bridge or full-bridge sub-modules (SMs), which makes the reliability as one of the most important challenges for MMC. Besides, due to the DC side short-circuit...
In this paper, we propose an intelligent nursing bed system which is controlled by a hybrid brain-computer interface (BCI) involving steady-state visual evoked potential (SSVEP) and P300. Specifically, the hybrid BCI includes an asynchronous brain switch based on SSVEP and P300, and a P300-based BCI. The brain switch is used to turn on/off the control system of the electric nursing bed through idle/control...
Modular multilevel converter (MMC) is regarded as one of the most promising topologies for the high-voltage high-power applications. However, reliability is one of the most important challenges for MMC which is composed of a large number of power electronics sub-modules (SMs). In order to increase the system reliability, redundant SMs are often utilized. A strategy is proposed in this paper to implement...
Modular multilevel converter (MMC) has been a research hotspot in the past decade in the high-voltage high-power applications. The basic working principle is analyzed in depth in this paper firstly. A precise control law is deduced to control the output voltage and the circulating current directly and precisely. Different from the conventional control law, arm inductor voltages are considered in the...
To suppress zero-sequence circulating current in parallel operating inverters with common DC power supply, this paper proposes a new strategy based on Dual-carrier SVPWM and proportional resonant (PR) control, which use two opposite active vectors instead of zero vectors to suppress the higher frequency circulating current and reduces the lower frequency circulating current by means of zero-sequence...
This paper proposes Hardware Trojan (HT) placement techniques that yield challenging HT detection benchmarks. We develop three types of one-gate HT benchmarks based on switching power, leakage power, and delay measurements that are commonly used in HT detection. In particular, we employ an iterative searching algorithm to find rarely switching locations, an aging-based approach to create ultra-low...
[Purpose] To apply the “on/off” switch of 3′ exonuclease in single base discrimination of L191P and F275S mutations in gene KCNQ1 which are the mutations found in Chinese patients of LQTS. [Methods] A large amount of templates of wild type and mutation type were prepared by primer extension performed using polymerases without 3′ exonuclease activity respectively. Allelic specific primers targeting...
This paper presents a wide intermediate-frequency (IF) bandwidth down-conversion double-balanced Gilbert-cell mixer design in a 0.13-μm CMOS process. The load stage of the mixer is implemented by an LC tank with switched capacitors to complete three selectable sub-bands to cover the desired wide IF band. Both the RF and LO ports are integrated with Marchand baluns for single-phase input consideration...
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