PWM Scheme and DC Link Current Control for Medium Voltage High Power Current Source Drive Systems

中压大功率电流源驱动系统的 PWM 方案和直流链路电流控制

• 批准号: 401404-2010
• 负责人: Li, Yunwei
• 金额: $ 2.91万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=487796
• 关键词: PWM; Scheme; DC; Link; Current

Due to the demand of high power industrial process, high power (500hp to 10,000hp) medium voltage (2.3kV to 13.8kV) motor drive is becoming one of the most active research areas in both power electronics and motor industries. In high power motor drives, the converter device switching frequency used is usually a few hundred Hertz due to the concern on the converter switching losses. This low switching frequency will cause line current distortions and dc link current or voltage ripples, which further increases the line side and motor side harmonic distortions. Traditional approach to deal with the harmonics and ripples is to add passive filtering components, which increases the cost, size and weight of a drive system.

由于大功率工业过程的需求，大功率（500hp至10，000hp）中压（2.3kV至13.8kV）电机驱动正在成为电力电子和电机行业最活跃的研究领域之一。在高功率电机驱动器中，由于对转换器开关损耗的关注，所使用的转换器装置开关频率通常为几百赫兹。这种低开关频率将导致线路电流失真和直流链路电流或电压纹波，这进一步增加了线路侧和电机侧的谐波失真。传统的谐波和纹波处理方法是增加无源滤波元件，这增加了驱动系统的成本、体积和重量。