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Minimizing DC system loss in multi-terminal HVDC systems through adaptive droop control

机译:通过自适应下垂控制将多终端HVDC系统中的DC系统损耗降至最低

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In this paper, droop control of inverters in a multi-terminal HVDC (MTDC) system is designed to achieve minimum DC system loss while preventing converter overvoltage. Circuit analysis along with optimization analysis is first conducted to seek the optimal droop control gains. Contingent operating conditions are then considered. The droop control gains will adapt to achieve minimum loss as well as constant inverter side dc voltage. A 6-terminal MTDC system with detailed control loops as well as PWM-based switching is built in a real-time digital simulator, RT-Lab. Time-domain simulation results validate the circuit analysis results and demonstrate the feasibility of the proposed adaptive droop control. (C) 2015 Elsevier B.V. All rights reserved.
机译:在本文中,多端HVDC(MTDC)系统中逆变器的下垂控制旨在实现最小的DC系统损耗,同时防止转换器过压。首先进行电路分析和优化分析,以寻求最佳的下垂控制增益。然后考虑或有条件。下垂控制增益将适应于实现最小损耗以及恒定的逆变器侧直流电压。在实时数字仿真器RT-Lab中构建了具有详细控制回路以及基于PWM的开关的6端子MTDC系统。时域仿真结果验证了电路分析结果,并证明了所提出的自适应下垂控制的可行性。 (C)2015 Elsevier B.V.保留所有权利。

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