Title:
MODULAR MULTI-LEVEL CONVERTER-BASED HIGH-POWER MOTOR DRIVING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/047130
Kind Code:
A1
Abstract:
A modular multi-level converter-based high-power motor driving system, which relates to the technical field of power generation, transformation or power distribution. The high-power motor driving system is composed of a modular multi-level converter (1) and a multi-pulse wave AC-AC frequency converter (2). The modular multi-level converter (1) outputs a k-phase high frequency AC voltage that has a phase difference of 2π/k. The multi-pulse wave AC-AC frequency converter (2) output a low frequency voltage to drive a corresponding motor. In the driving system, the modular multi-level converter (1) is combined with the multi-pulse wave AC-AC frequency converter (2), and by means of employing the modular multi-level converter (1) operating at a high frequency, the energy storage capacitance capacity, volume and weight of the modular multi-level converter (1) are reduced, the DC side voltage level of the modular multi-level converter (1) is increased, and the capacity of the driving system is improved; and by means of employing the multi-pulse wave AC-AC frequency converter (2), the output waveform quality at the motor side is ensured, and low-frequency control of the motor is achieved, which is suitable for driving high-power and low-speed motors.
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Inventors:
DENG FUJIN (CN)
JIANG PENGYUAN (CN)
HU YIHUA (CN)
JIANG PENGYUAN (CN)
HU YIHUA (CN)
Application Number:
PCT/CN2020/070007
Publication Date:
March 18, 2021
Filing Date:
January 02, 2020
Export Citation:
Assignee:
UNIV SOUTHEAST (CN)
International Classes:
H02P27/08; H02P5/74
Foreign References:
| CN110611460A | 2019-12-24 | |||
| CN109474008A | 2019-03-15 | |||
| EP1306964A1 | 2003-05-02 | |||
| CN108599603A | 2018-09-28 | |||
| CN101079578A | 2007-11-28 |
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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