A reliable, interface-friendly medium voltage drive based on the robust IGCT and DTC technologies
A reliable, interface-friendly medium voltage drive based on the robust IGCT and DTC technologies
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DOI：
10.1109/ias.1999.805941
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发表时间：
1999-10
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影响因子：
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通讯作者：
Peter K. Steimer;J. K. Steinke;H. E. Gruning
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文献类型：
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作者：
Peter K. Steimer;J. K. Steinke;H. E. Gruning
用于中压驱动产品的电压源功率转换器拓扑的使用允许通过串联的12脉冲（或可选地24脉冲）二极管整流器实现与IEEE 519-1992兼容的实用接口，而无需任何谐波滤波器或功率因数校正设备。在电机侧，三电平电压源逆变器，也称为中点箝位（NPC）逆变器，是首选类型。结合最新的无缓冲器IGCT（集成门极换向晶闸管）技术，可以构建高达4 kV线间电压及更高电压的无串联MV逆变器。这导致具有最少部件数量的高效且可靠的MV功率转换器系统。通过在逆变器和电机端子之间使用LC滤波器，可以在不降低额定值的情况下为标准电机供电。随着直接转矩控制（DTC）的使用，如低压驱动器的开发，中压驱动器应用受益于与低压驱动器的协同作用。NPC逆变器和LC滤波器的无损谐振控制需要特定的附加组件。DTC和IGCT已经投入商业运行多年，显示出其预期的非常高的可靠性和鲁棒性。这两种技术都达到了当今已知的物理极限，无论是在硅还是在扭矩控制动态方面。
The use of a voltage source power converter topology for medium voltage drive products allows to realize a utility interface compatible with IEEE 519-1992 by means of a series 12-pulse (or optionally a 24-pulse) diode rectifier without any harmonic filters or power factor correction equipment. On the motor side, the three-level voltage source inverter, also known as the neutral-point clamped (NPC) inverter, is the preferred type. In combination with the newest snubberless IGCT (integrated gate-commutated thyristor) technology, it is possible to build MV inverters without series connection up to 4 kV line-to-line voltage and higher. This results in a highly efficient and reliable MV power converter system with a minimum parts count. By using an LC-filter between the inverter and motor terminals, feeding of standard motors without derating becomes possible. With the use of direct torque control (DTC), as developed for low voltage drives, the MV drives applications benefit from the synergies with low voltage drives. Specific add-ons for the NPC inverter and the lossless resonance control of the LC-filter are needed. The DTC and the IGCT have been in commercial operation for several years, showing their expected very high levels of reliability and robustness. Both technologies reach today's known limits of physics, either in silicon or in torque control dynamics.