モジュラー・マルチレベルPWMインバータを用いた高圧モータドライブ第1報：400V，15kWミニモデルによる実験的検証

This paper presents a medium-voltage motor drive with a three-phase modular multilevel PWM inverter and focuses on its control method and operating performance. This motor drive is particularly suitable for fans, blowers, pumps, and compressors, in which the load torque is proportional to the square of the rotating speed. Particular attention is paid to the dc-capacitor voltage fluctuation of each chopper-cell because it may affect the voltage rating of the power switching devices used. This paper describes the theoretical equations related to the amount of the voltage fluctuation. A downscaled model rated at 400V and 15kW is designed and built to confirm the validity and effectiveness of the nine-level (17-level in line-to-line) PWM inverter that is intended for use in medium-voltage motor drives to achieve energy savings.

[1]  Hirofumi Akagi,et al.  Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components , 1984, IEEE Transactions on Industry Applications.

[2]  Hirofumi Akagi,et al.  A New Neutral-Point-Clamped PWM Inverter , 1981, IEEE Transactions on Industry Applications.

[3]  S. Allebrod,et al.  New transformerless, scalable Modular Multilevel Converters for HVDC-transmission , 2008, 2008 IEEE Power Electronics Specialists Conference.

[4]  M. Venturini,et al.  Solid-state power conversion: A Fourier analysis approach to generalized transformer synthesis , 1981 .

[5]  H. Akagi,et al.  PWM control and experiment of modular multilevel converters , 2008, 2008 IEEE Power Electronics Specialists Conference.

[6]  D. Retzmann,et al.  Prospects of multilevel VSC technologies for power transmission , 2008, 2008 IEEE/PES Transmission and Distribution Conference and Exposition.

[7]  Rainer Marquardt,et al.  A new AC/AC multilevel converter family , 2005, IEEE Transactions on Industrial Electronics.

[8]  Hirofumi Akagi,et al.  Voltage-Balancing Control of a Three-Level PWM Converter in a Transformerless Hybrid Active Filter , 2008 .

[9]  Rainer Marquardt,et al.  A New Single Phase AC/AC-Multilevel Converter for Traction Vehicles Operating On Ac Line Voltage , 2004 .

[10]  Hirofumi Akagi,et al.  Analysis and design of a DC voltage-controlled static VAr compensator using quad-series voltage-source inverters , 1996 .

[11]  M. Glinka,et al.  Prototype of multiphase modular-multilevel-converter with 2 MW power rating and 17-level-output-voltage , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).