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| 直流直挂储能系统两级式软启动控制研究 |
| Research on Two-Stage Soft-Start Control for DC Direct-Mounted Energy Storage Systems |
| 投稿时间：2026-01-22 修订日期：2026-03-18 |
| DOI： |
| 中文关键词: 储能系统 直流直挂 高压 脉冲阶梯调制 软启动 |
| 英文关键词: Energy storage systems DC direct-mounted high voltage pulse-step modulation soft start |
| 基金项目:安徽省高校省级自然科学研究项目(2023AH010021) |
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| 中文摘要: |
| 随着风光等可再生能源通过高压直流输电技术实现电能远距离外送,高压直流直挂储能系统的应用需求日益凸显。针对半桥级联直流直挂储能系统拓扑结构,提出了基于脉冲阶梯调制技术的控制策略,在此基础上,详细研究了储能系统电压控制与功率控制两种工作模式。直流直挂储能系统投入运行时,低压侧与高压侧启动冲击电流会引起安全问题,为此提出了一种两级软启动控制策略,低压侧采用电阻电路实现第一级软启动,高压侧采用级联半桥电路实现第二级软启动。最后,基于RT-LAB平台搭建实验模型,实验结果验证了基于脉冲阶梯调制技术控制策略与两级软启动控制策略的可行性。 |
| 英文摘要: |
| As renewable electricity generated from wind and solar energy is transmitted over long distances by high-voltage direct-current (HVDC) technology, the need for high-voltage DC direct-mounted energy storage systems has become increasingly prominent. For the cascaded half-bridge DC direct-mounted energy storage system topology, the control strategy of pulse step modulation (PSM) technology is proposed. On this basis, the voltage control and power control modes are studied in detail. When the DC direct-mounted energy storage system is put into operation, the startup inrush currents on the low-voltage side and high-voltage side will introduce safety concerns. To address this issue, a two-stage soft-start control strategy is proposed. The first-stage soft start on the low-voltage side is achieved by a resistor circuit, while the second-stage soft start on the high-voltage side is achieved by the cascaded half-bridge circuit. Finally, an experimental model is built on the RT-LAB platform, and the experimental results verify the feasibility of the PSM control strategy and the two-stage soft-start control strategy. |
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