1. Introduction In general, on a snow-covered or otherwise slippery road, an abrupt steering change will cause unstable vehicle behavior, or excessive speed will make the vehicle deviate from the intended path. The vehicle stability control (VSC) system detects such conditions and stabilizes the vehicle. Although the use of VSC has begun to increase, it is not yet widely seen in inexpensive car...

The optimal control gains of the VSC HVDC converter are very dependent on the Short Circuit Ratio (SCR) of the ac system to which the converter is connected. This paper introduces off-line SCR estimation based on pre-set switching status of the ac system. The control gains of the VSC HVDC system can be adjusted on-line to achieve optimal performance based on a calculation of the SCR. However, w...

This paper provides a detailed comparative study concerning the performance of min-projection strategy (MPS) and model predictive control (MPC) systems to control the three-phase grid connected converters. To do so, first, the converter is modeled as a switched linear system. Then, the feasibility of the MPS technique is investigated and its stability criterion is derived as a lower limit on th...

This paper modeled a doubly fed induction generator (DFIG) based offshore wind farm integrated through a voltage source converter –based high voltage direct current (VSC-HVDC) transmission system, which is collected with infinite bus for small signal stability analysis. The control system of HVDC system is considered for the stability analysis. The impact of the VSC control parameters on the ne...

The loading of free wheel diodes (FWD) and IGBTs in the power modules of a Voltage Source Converter (VSC) are investigated. In converter duty, the FWD is utilized more then the IGBT. Presently, most FWD’s in power modules are optimized for inverter duty. This practice tends to undersize the FWD from a converter viewpoint. This design philosophy is examined in the paper. For this purpose, the or...

Abstract This study focuses on stability of weak grid connected voltage source converter (WG‐VSC) in Low‐frequency mode (LFM) (around 1–10 Hz), which is dominated by interactions among phase‐locked loop (PLL), outer control and condition. In order to clearly reveal LFM mechanism WG‐VSC, a simple but effective PLL‐equivalent model has been proposed. First, generic small signal consisted PLL ‘out...

The doubly-fed induction generators (DFIGs) integrated to the grid through voltage source converter-high direct current (VSC-HVDC), cascaded droop control from system frequency DC voltage, then active output of DFIG, was applied enhance regulation capability power system. improved dynamic flow (DPF) model newly proposed quantify response coordinated with inertia VSC-HVDC and DFIGs, primary sync...

Fatigue cracking of viscoelastic asphalt composite materials is one the major distresses in pavements. To quantify weakening effect fatigue cracks on mechanical properties materials, this study takes an asphalt-filler system as example, and micromechanics models are proposed by combining Eshbely’s equivalent inclusion theory Mori-Tanaka approach. Dynamic shear rheometer (DSR) tests performed sy...

Voltage source converter (VSC) is the expected core technology that supports power system de-carbonization by allowing renewable energy development. However, with increasing penetration of renewables and continuing decommissioning thermal generators, challenges integrating VSC-based systems into weak even very ac grids become apparent. Therefore, this paper presents theoretical analysis describ...

Vibrational strong coupling (VSC) has recently been shown to change the rate and chemoselectivity of ground-state chemical reactions via formation light–matter hybrid polaritonic states. However, observation that vibrational-mode symmetry a large influence on charge-transfer under VSC suggests considerations could be used control other types selectivity through VSC. Here, we show influences ste...