Sensorless salient pole permanent magnet synchronous motor and starting motor control method

A technology of permanent magnet synchronous motor and starting motor, which is used in motor generator control, motor control, AC motor control and other directions

Active Publication Date: 2021-10-12
WOLONG ELECTRIC GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods involve complex analysis of the motor response by the HFI, which requires the motor to be at zero or very low speed, usually achieved through open-loop control, such as using a braking system, which suffers from the same problems described above

Method used

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  • Sensorless salient pole permanent magnet synchronous motor and starting motor control method
  • Sensorless salient pole permanent magnet synchronous motor and starting motor control method
  • Sensorless salient pole permanent magnet synchronous motor and starting motor control method

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Embodiment Construction

[0088] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0089] The present disclosure describes various embodiments that provide robust starter motor control for permanent magnet synchronous motors ("PMSM"). Many of the embodiments described herein are suitable for commercial fan drive applications that may lack robust motor start control. The motor control system and method of the present invention will be discussed in more detail in conjunction with various embodiments throughout the present invention, a circuit that can implement sensorless permanent magnet motor control, including one or a combination of the following features:

[0090] Carry out full-closed-loop start-up control of the motor according to different start-up motor conditions;

[0091] Programmed rotor motion monitoring operation, used to monitor the rotor motion at the moment of motor startup;

[0092] Optional confi...

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Abstract

The invention discloses a sensorless salient pole permanent magnet synchronous motor and a starting motor control method, and relates to the field of motors. Closed-loop control of start-to-operation of sensorless motors requires a more robust and advanced method. The system comprises a controller which detects rotor motion during a starting period so as to obtain a motor rotating speed estimation value at a starting moment; selecting one of a plurality of different motor rotating speed estimation methods as an initial starting motor rotating speed estimation method based on starting motor rotating speed estimation; estimating the rotating speed of the motor according to the selected initial starting motor rotating speed estimation method. A drive command is generated during motor startup using closed-loop control according to feedback provided to the controller, and a motor speed estimate is obtained according to the selected initial startup motor speed estimate. According to the technical scheme, a dynamic high-frequency injection speed estimation method is adopted and can be used even when the rotor rotates at a non-negligible speed, so that stable and efficient starting of the motor is achieved.

Description

technical field [0001] The invention relates to the field of motors, in particular to a sensorless salient pole permanent magnet synchronous motor and a control method for a starting motor. Background technique [0002] Over the past decade, sensorless-based permanent magnet synchronous motor (PMSM) systems have begun to be used in commercial wind turbine drive applications with the development of next-generation motor control technologies. These sensorless motors can not only provide high peak efficiency at rated operating speed, but also provide a large efficient operating speed range. In addition, variable speed operation allows the system to operate at low capacity during off-peak hours, such as at night, which enables high energy savings for HVAC systems using permanent magnet synchronous motor systems. In addition, these electronically controlled permanent magnet synchronous motor systems also provide a wide range of sensing and monitoring opportunities for product sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/30H02K21/14H02P21/00H02P21/18H02P21/24H02P21/34H02P25/022
CPCH02K21/14H02K11/30H02P21/18H02P21/24H02P21/34H02P21/0003H02P25/022H02P2207/05H02P21/12H02P21/13H02P21/22H02P2203/05H02P2203/11H02P6/182H02P6/183
Inventor 拉杜·博杰伊张政姜泽
Owner WOLONG ELECTRIC GRP CO LTD
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