Voltage angle lock loop control of the boost type PWM converter for HVDC application

Performance Analysis of Power Converter Based Active Rectifier for an Offshore Wind Park

“…The worstcase scenario variations magnitudes are derived in Eqs. (16) and (17). Depending on the number of units or branches that can fail simultaneously, different values of k and z will be expected.…”

“…The three-phase two-level fullbridge VSC rectifier is shown in Figure 1(a) [17]. This topology contains six valves with an average of two valves conducting continuously.…”

Analysis of a DC Collector-based Power Converter Topology for an Offshore Wind Farm

“…• phase angle difference between legs [17]. The total power losses of a balanced three-phase full-bridge VSC is derived in Eq.…”

The Principle and Method of Improving Short Circuit Ratio of LCC-HVDC by VSC-HVDC

“…In multi-infeed LCC-HVDC system, the interaction between different HVDCs is an important factor to be considered when evaluating ESCR. Similar to ESCR definition of single-infeed system, Multi-Infeed Effective Short Circuit Ratio (MISCR) can be defined as (2). Where S ACi is short circuit capacity at the ith coupling point of AC system, Q Ci is reactive power of shunt capacitors at the ith coupling point, P dci_eq is the equivalent active power of the ith LCC-HVDC, which can be calculated through (3).…”

“…Comparing with Line-commutated Converter based HVDC (LCC-HVDC), Voltage Source Converter based HVDC (VSC-HVDC) shows many advantages such as fast responsibility, flexible controllability and suitable for AC grids with low short-circuit capacity, which makes it a focus of research and engineering [1][2][3][4] . Recently VSC-HVDC are widely applied to power electric engineering including integration of wind farm, feeding isolated grid, and asynchronous interconnection of different power grid.…”