ROTARY DRIVING MECHANISM AND CONSTRUCTION DEVICE

WIPO Patent Application WO/2022/099802

A1

A rotary driving mechanism and a construction device, relating to the technical field of rotary systems. The rotary driving mechanism comprises an electrical system and a mechanical transmission system. The electrical system comprises a main transformer (5), two rectification feedback units (6), a common direct current bus (7) and a frequency conversion-inverter (8) which are electrically connected in sequence. The mechanical transmission system comprises a motor (9). The frequency conversion-inverter (8) is connected to the motor (9). The arrangement of the two sets of rectification feedback units (6) improves the energy conversion efficiency, and reduces the energy loss. A stable power supply is provided for the motor (9) under a working condition, a braking force is converted into electric energy by the motor (9) under a rotary braking condition, energy recycling is achieved, and disturbance to a power grid is avoided during energy recycling; moreover, no inversion failure condition is generated, and a motor-generator state conversion mode is optimized; a common direct-current bus (7) loop voltage is constant and is not affected by power grid voltage fluctuation.

ZHOU HANG (CN)
DONG CHENGJIE (CN)
ZENG ZIJING (CN)
YAO LONGGANG (CN)
YU XINLEI (CN)

PCT/CN2020/132095

May 19, 2022

November 27, 2020

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CHINA RAILWAY ENG MACHINERY RES & DESIGN INST CO LTD (CN)

E02F3/04; H02J3/38; E02F9/20; E21C47/00; H02K7/116; H02K7/18

CN202064388U	2011-12-07
CN204334406U	2015-05-13
CN202220061U	2012-05-16
CN108644319A	2018-10-12
CN101852270A	2010-10-06
CN109914517A	2019-06-21
CN103758938A	2014-04-30
JP2012102571A	2012-05-31

TALENT PATENT&TRADEMARK FIRM (CN)

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