Permanent
发表于 2025-3-23 10:11:21
7. Sources of Noise and Spurs in DDS,he impedance characteristics of MMC-HVDC are different in the two operating modes. Besides, since the DC transmission lines of MMC-HVDC exhibit non-ideal voltage source characteristics, the converter control loops and AC grid strength at the receiving side also influence the impedance characteristic
OUTRE
发表于 2025-3-23 16:14:23
7. Sources of Noise and Spurs in DDS,By the end of 2021, the cumulative world capacity of the installed wind power and photovoltaic (PV) generation amounted to 849 GW and 825 GW. In China, renewable energy generation (REG) has been developing rapidly in the past two decades.
繁荣地区
发表于 2025-3-23 19:23:22
4. Direct Digital Synthesizers,Power electronic devices are widely used in renewable energy generation and AC/DC transmission systems. From system modeling and analysis point of view, these are nonlinear systems due to the switching process and active control of grid-connected converters.
来这真柔软
发表于 2025-3-23 23:34:37
4. Direct Digital Synthesizers,The mathematical model of two-level converter includes several non-linear parts such as insulated-gate bipolar transistor (IGBT) switching in the main circuit, and pulse width modulation (PWM), Park transformation, and PLL in the control loops.
否认
发表于 2025-3-24 02:28:17
11. Pulse Shaping and Interpolation Filters,PV array is the power supply of PV unit. The changes in irradiance and temperature will affect the output voltage and current of PV array. As DC bus provides a coupling path between PV array and the inverter, operating conditions have a significant impact on the broadband impedance characteristics of PV unit.
认识
发表于 2025-3-24 06:38:15
Digital System Test and Testable DesignREG plants usually include dozens to thousands of units, as well as overhead transmission lines or cables, unit box transformers.
单片眼镜
发表于 2025-3-24 13:31:20
Standard IEEE Test Access Methods,At the sending side of HVAC transmission, thousands of REG units are integrated into AC grid through multiple step-up transformers. Besides, series capacitive compensators are widely used in HVAC to improve the transmission capacity and enhance the system stability.
Malcontent
发表于 2025-3-24 16:35:03
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全部逛商店
发表于 2025-3-24 21:20:32
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性行为放纵者
发表于 2025-3-25 01:14:50
Introduction,By the end of 2021, the cumulative world capacity of the installed wind power and photovoltaic (PV) generation amounted to 849 GW and 825 GW. In China, renewable energy generation (REG) has been developing rapidly in the past two decades.