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A speed sensorless vector control system and method for a high-speed flywheel

A speed sensorless, vector control technology, applied in vector control systems, control systems, control generators, etc., can solve problems such as high processor performance requirements, complex algorithms, and large calculation loads

Active Publication Date: 2021-02-09
中冶赛迪电气技术有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the extended Kalman filter algorithm is complex, with a large amount of calculation, and requires high processor performance; although the sliding mode variable structure observer algorithm is easy to implement, it has chattering problems

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  • A speed sensorless vector control system and method for a high-speed flywheel
  • A speed sensorless vector control system and method for a high-speed flywheel
  • A speed sensorless vector control system and method for a high-speed flywheel

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Embodiment Construction

[0049] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0050] Such as figure 1 As shown, a speed sensorless vector control system for a high-speed flywheel according to the present invention includes: a speed control module 101, a q-axis current controller 102, a d-axis current controller 103, a Park inverse transformation module 104, and a current sampling module 108 , Clark transformation module 109 , Park transformation module I 110 , speed calculation module 111 , SVPWM modulation module 105 , three-phase inverter 106 and flywheel 107 . The implementation method of the system includes start-up, low-speed control, medium-high speed control, setting the current amplitude according to the given rotational speed in the low-speed stage, and calculating the current coordinate transformation angle from the given rotational speed. After a smooth transition to medium-high speed control, the rotatio...

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Abstract

The invention relates to a speed sensorless vector control system and method of a high-speed flywheel, belonging to the field of permanent magnet synchronous motor control. The system includes: a speed control module (101), a q-axis current controller (102), a d-axis current controller (103), a Park inverse transformation module (104), a current sampling module (108), and a Clark transformation module (109) , Park transformation module I (110), speed calculation module (111), SVPWM modulation module (105), three-phase inverter (106) and flywheel (107). The invention can effectively estimate the synchronous motor speed and rotor position angle without adding a voltage sensor, and realize speed sensorless control; and the control system is simple in structure, less in calculation amount, easy to implement, and can accurately control the flywheel at startup time current amplitude.

Description

technical field [0001] The invention belongs to the field of permanent magnet synchronous motor control, and relates to a speed sensorless vector control system and method of a high-speed flywheel, in particular to low-speed start-up control and medium-high-speed vector control of the flywheel. Background technique [0002] Flywheel energy storage is to store energy in the form of mechanical energy on the high-speed rotating flywheel rotor. Compared with chemical energy storage methods, flywheel energy storage has the advantages of less temperature influence, high power density, high operating efficiency, and long life after repeated charging and discharging. The advantages of low environmental pollution. Flywheel energy storage has broad application prospects in power system peak regulation and frequency modulation, UPS power supply, ship electric drive, photovoltaic power station grid connection, urban rail train energy recovery braking, electric drive for electric departu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/28
Inventor 魏立彬郝亚川干永革赵聪任亚葱孙倩倩
Owner 中冶赛迪电气技术有限公司