Search Results - "Qiu, Ruichang"

Online Condition Monitoring of DC-Link Capacitor for AC/DC/AC PWM Converter by Li, Ting, Chen, Jie, Cong, Peicheng, Dai, Xiaoteng, Ruichang, Qiu, Liu, Zhigang

“…This article proposes a condition monitoring scheme for the dc-link capacitors used in ac/dc/ac pulsewidth-modulation converters based on the signal injection,…”
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Converter Capacitor Temperature Estimation Based on Continued Training LSTM under Variable Load Conditions by Dai, Xiaoteng, Chen, Yiqiang, Chen, Jie, Qiu, Ruichang

“…Capacitors are crucial components in power electronic converters, responsible for harmonic elimination, energy buffering, and voltage stabilization. However,…”
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Noninvasive condition monitoring of three-phase four-wire inverter system parameters by Sun, Yuan, Chen, Jie, Dai, Xiaoteng, Qiu, Ruichang

“…•The actual duty cycle function is derived by considering the effects of dead time, on-time and off-time in the dual sampling mode, and based on this, the…”
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Improved empirical wavelet transform (EWT) and its application in non-stationary vibration signal of transformer by Ni, Ruizheng, Qiu, Ruichang, Jin, Zheming, Chen, Jie, Liu, Zhigang

“…The resonant frequency of the transformer contains information related to its structure. It is easier to identify the resonance frequency in the vibration…”
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Characteristics Analysis and Measurement of Inverter-Fed Induction Motors for Stator and Rotor Fault Detection by Tang, Jing, Yang, Yongheng, Chen, Jie, Qiu, Ruichang, Liu, Zhigang

“…Inverter-fed induction motors (IMs) contain a serious of current harmonics, which become severer under stator and rotor faults. The resultant fault components…”
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Intelligent Prediction Method for Heat Dissipation State of Converter Heatsink by Jia, Hao, Chen, Jie, Fu, Heping, Qiu, Ruichang, Liu, Zhigang

“…Currently, the offline manual periodic detection method is a well-established practice in detecting the thermal state of the converter heatsink. This method,…”
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Control Strategy of Three-Phase Inverter with Isolation Transformer by Chen, Jie, Li, Jun, Qiu, Ruichang, Liu, Zhigang

“…In order to improve the control performance of a train auxiliary inverter and satisfy the requirements of power quality, harmonics, and unbalanced factor, this…”
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Beat‐less algorithm based on dual‐frequency compensation in railway traction applications by Shen, Lailai, Chen, Jie, Kuang, Yang, Qiu, Ruichang, Zhou, Dao, Wu, Chao, Liu, Zhigang

“…The beat phenomenon can be a critical issue in railway traction applications. This paper proposes a dual‐frequency compensation (DFC) method for the beat‐less…”
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VCT-AOC Comprehensive Method to Suppress High-Frequency Resonance and Low-Frequency Oscillation in Railway Traction Power Supply System by Zhang, Xinyu, Chen, Jie, Qiu, Ruichang, Liu, Zhigang

“…Aiming at the high-frequency resonance (HFR) and low-frequency oscillation (LFO) phenomena in high-speed railways, a comprehensive suppression method named…”
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A Weighted Classification Method Based on Adaptive Feature Selection by Ni, Ruizheng, Qiu, Ruichang, Luo, Zhiwei, Chen, Jie, Jin, Zheming, Liu, Zhigang

“…This paper proposes a new classification method, which can adaptively select effective features and give different classification weights according to the…”
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The Harmonic Characteristic of the Advanced Synchronous SVPWM Overmodulation Strategy by Chen, Jie, Ni, Ruizheng, Li, Ting, Qiu, Ruichang, Liu, Zhigang

“…The speed range of the rail transit traction system is very wide and mostly uses the hybrid pulse width modulation. The traditional hybrid pulse width…”
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The WRHE-PWM Strategy With Minimized THD to Suppress High-Frequency Resonance Instability in Railway Traction Power Supply System by Zhang, Xinyu, Chen, Jie, Zhang, Gang, Qiu, Ruichang, Liu, Zhigang

“…Aiming at the high-frequency resonance instability phenomenon in high-speed railways and traction network (simplified as "train-network") system, a new…”
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An Active Oscillation Compensation Method to Mitigate High-Frequency Harmonic Instability and Low-Frequency Oscillation in Railway Traction Power Supply System by Zhang, Xinyu, Chen, Jie, Zhang, Gang, Wang, Lei, Qiu, Ruichang, Liu, Zhigang

“…This paper investigates the high-frequency harmonic instability (HHI) and low-frequency oscillation (LFO) phenomena in high-speed railways, and proposes an…”
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Online Fatigue Estimation and Prediction of Switching Device in Urban Railway Traction Converter Based on Current Recognition and Gray Model by Wang, Lei, Xu, Weihua, Liu, Shenyi, Qiu, Ruichang, Xu, Chunmei

“…It is difficult to estimate and predict the fatigue state of switchgear in traction converter of urban Electric Multiple Unit (EMU). At the same time, this is…”
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Fault Prediction Model of High-Power Switching Device in Urban Railway Traction Converter with Bi-Directional Fatigue Data and Weighted LSM by Wang, Lei, Liu, Shenyi, Qiu, Ruichang, Xu, Chunmei

“…The switching device is relatively weakest in the traction converter, and this paper aims at the fault prediction of it. Firstly, the mathematical distribution…”
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A pilot investigation on oxidation of ammonium sulfite by streamer corona plasma by Hu, Xiaotu, Zhu, Tianle, Jiang, Xuedong, Wang, Yi, Qiu, Ruichang, Zhang, Hongdi, Li, Ruinian, Yan, Keping

“…For ammonia flue gas desulfurization (FGD), the sulfite to sulfate oxidation is very critical for industrial applications. This paper reports a novel corona…”
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A semi-wet technological process for flue gas desulfurization by corona discharges at an industrial scale by Yan, Keping, Li, Ruinian, Zhu, Tianle, Zhang, Hongdi, Hu, Xiaotu, Jiang, Xuedong, Liang, Hui, Qiu, Ruichang, Wang, Yi

“…An industry-scale semi-wet technological process for flue gas desulfurization by corona discharges is recommended. Its characteristics are: (1) it uses an…”
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Kinetic model of non-thermal plasma flue gas desulfurization in a wet reactor by Jiang, Xue Dong, Li, Ruinian, Qiu, Ruichang, Hu, Xuaotu, Liang, Hui

“…A model of the process in a wet reactor for flue gas desulfurization by corona discharges is provided. Through deriving dependences of chain length Θ,…”
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Open-Circuit, Current Sensor Fault Diagnosis of Three-Phase Four-Wire Inverters Based on Fourier Fitting by Sun, Yuan, Chen, Jie, Qiu, Ruichang, Li, Chao

“…Existing fault diagnosis methods of inverter's open-circuit faults and sensor faults are mainly for linear loads. With the increasing use of nonlinear loads, a…”
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A temperature calculation method of oil immersed transformer considering delay effects and multiple environmental factors by Ni, Ruizheng, Chen, Jie, Yang, Cheng, Li, Chao, Qiu, Ruichang, Liu, Zhigang, Li, Runxin, Gao, Le, Li, Yongwei

“…•By introducing the delay factor, the heat transfer process of environmental factors on the internal temperature of transformer can be quantified as the value…”
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