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Driving circuit and driving device

A drive circuit and drive device technology, applied in the direction of output power conversion devices, electrical components, and adjustment of electrical variables, etc.

Pending Publication Date: 2021-04-23
PEITIAN ROBOTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to increase the speed of the motor, the permanent magnet synchronous motor uses a field-weakening control method, but the field-weakening control achieves an increase in the speed of the motor by reducing the torque of the motor, making it difficult for the motor to operate without losing torque under high torque conditions. Can increase speed

Method used

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Embodiment Construction

[0039] In order to enable those skilled in the art to better understand the technical solution of the present application, the driving circuit and the driving device provided in the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0040] The terms "first", "second", etc. in this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or d...

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Abstract

The invention discloses a driving circuit and a driving device, and the driving circuit comprises a rectification circuit which is connected with an external power supply and is used for converting an AC voltage into a DC voltage, a boosted circuit connected with the rectification circuit and used for converting a direct-current voltage into a first voltage larger than the direct-current voltage, and an inverter circuit is connected with the boosted circuit and used for converting the first voltage into three-phase voltages and driving a motor of the driving device; and the rotating speed of the motor is in positive correlation with the first voltage. The driving circuit is additionally provided with the boosted circuit, and the DC voltage is boosted through the boosted circuit, so that the peak value of the three-phase voltage is increased, and the rotating speed of the motor is further increased.

Description

technical field [0001] The present application relates to the field of motor drive, in particular to a drive circuit and a drive device. Background technique [0002] In the prior art, the most critical components of the power system are the two major components of the motor and the electric drive. In terms of motors, permanent-magnet synchronous motors (PMSM, permanent-magnet synchronous motor) are widely used in the field of power systems due to their high power density, high reliability, and high efficiency. In order to increase the speed of the motor, the permanent magnet synchronous motor uses a field-weakening control method, but the field-weakening control achieves an increase in the speed of the motor by reducing the torque of the motor, making it difficult for the motor to operate without losing torque under high torque conditions. Speed ​​can be increased. Contents of the invention [0003] The present application at least provides a driving device and a drivin...

Claims

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Application Information

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IPC IPC(8): H02P6/10H02P25/022H02M7/06H02M3/07H02M3/156H02M7/537H02M1/42
CPCH02M1/4225H02M3/07H02M3/156H02M7/06H02M7/537H02P6/10H02P25/022Y02B70/10
Inventor 程鹏天
Owner PEITIAN ROBOTICS CO LTD
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