Position-sensor-free permasyn motor direct driving device and driving method

Abstract

The invention provides a position-sensor-free permasyn motor direct driving device and a driving method. The position-sensor-free permasyn motor direct driving device mainly consists of a power amplification unit, a main control unit, an operation control unit and a permasyn motor, wherein the power amplification unit consists of a controllable rectifier circuit, an inverter circuit and a detection circuit, the main control unit consists of an interface processing circuit and a digital controller, the operation control unit is mainly realized through an external operation control panel, and the permasyn motor comprises a motor stator and a rotor. The invention replaces the technical scheme of an asynchronous motor and a speed reducer, adopts the permasyn motor, and can improve the device efficiency. Through the adoption of the technical scheme without a position sensor, the invention can improve the operation stability and the environment adaptability, add the input power factor correction and wave filtering links, reduce the interference on the electric network and the wire inlet loss, and reach the goal of green and energy saving effect of the device.

Description

technical field [0001] The invention relates to a motor drive control technology, especially a position sensorless permanent magnet synchronous motor control and power factor correction technology. Background technique [0002] In the 21st century, energy and the environment are one of the most important issues facing mankind. Especially in recent years, the issues of climate change and greenhouse gas emission reduction have continued to heat up and have become hot issues of global concern. The resulting "low-carbon economy" is an economic model based on low energy consumption, low pollution, and low emissions. It is another major progress of human society after agricultural civilization and industrial civilization. The essence of low-carbon economy is the efficient utilization of energy, the development of clean energy, and the pursuit of green GDP. The core is the innovation of energy technology and emission reduction technology, the innovation of industrial structure and...

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Problems solved by technology

[0006] Through searching existing technical documents, it is found that there is a document report identical or similar to the title of the present invention in the CNKI database, entitled "Research and Development of Direct Drive Wind Power Grid Side Converter Control System" (public date 2009.2. 17), this paper focuses on the variable current control operation of the generator, which has nothing to do with the direct drive device of the sensorless permanent magnet synchronous motor

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