A portable ride-through (RT) tester provides a voltage drop at control circuitry of a motor starter to test its RT capabilities. The RT tester includes a variable transformer for manually controlling the magnitude of the voltage drop. Timing circuitry is programmed to count cycles of a 120 VAC...
3. It can simulate low voltage ride through (LVRT) test curve.4. It can synthesize fundamental wave and each harmonic wave to simulate power quality adaptability test.5. With step programming mode, each step can set the output voltage, frequency, operation time, etc., ...
【英语版】国际标准 IEC TS 62910:2015 EN 连接在电源上的光伏逆变器-用于低电压穿越测量的测试程序 Utility-interconnected photovoltaic inverters - Test procedure for low voltage ride-through measurements.pdf,IEC TS 62910:2015是国际电工委员会(IEC)发布的一个
Yongheng Yang,Frede Blaabjerg,Sih-Li Chen.Low-Voltage Ride-Through Capability of a Single-Stage Single-Phase Photovoltaic System Connected to the Low-Voltage Grid[J]. International Journal of Photoenergy .2013Y. Yang and F. Blaabjerg, "Low voltage ride-through capability of a single-stage single...
Abstract: In order to cope with the long-distance submarine cable effects on low voltage ride through(LVRT)remote testing for offshore wind turbines(WTs), the LVRT testing model was built and the method for remote testing on LVRT of offshore WTs was proposed according to the existing LVRT ...
The invention discloses a low-voltage ride-through method for a photovoltaic inverter. The method comprises the following steps of: acquiring a power grid bus side voltage by using a voltage sensor, causing the power grid bus side voltage to pass through a conditioning circuit and transmitting th...
The test results prove that the GSC LVRT control method would make DC-link voltage stable and convert rotor power to the grid with a fast response. 展开 关键词: Doubly fed induction generator grid side converter low voltage ride through DC-link voltage ...
The low-voltage ride through detection device is characterized in that an AC (alternating current) source input end is connected with a 10 kV utility grid; an isolation transformer is additionally arranged to prevent the influences of detection on the utility grid; one end of the low-voltage ...
Both test results show that single-phase PV inverters with the proposed control approach not only can support the grid voltage recovery in low-voltage ride-through operation but also can improve the overall reliability with a reduced junction temperature. 展开 ...
The results show that reasonable crowbar resistance value and switching strategy can improve low voltage ride through (LVRT) ability of wind turbines and reduce bad impacts on district grid voltage stability with large-scale crowbar switching of wind farms. 展开 关键词: low voltage ride through (...