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Method or controlling permanent magnet synchronous motor-air conditioner compressor system without speed sensor

A permanent magnet synchronous motor and speed sensorless technology, which is applied in the direction of motor generator control, electronic commutation motor control, control system, etc., can solve the problems of pulsation, following the change of load torque, large speed, etc., to overcome the system The conflict between stability and response speed, and the effect of improving control performance

Inactive Publication Date: 2005-03-02
TSINGHUA UNIV
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Problems solved by technology

[0020] Compared with the brushless DC motor control system widely used in the air conditioning system at present, the feature of the present invention is that the speed sensorless vector control is applied to the permanent magnet synchronous motor-air conditioner compressor load system, thereby overcoming the problem of the output of the brushless DC motor. The torque cannot accurately follow the change of the load torque, resulting in the defect of large speed ripple

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  • Method or controlling permanent magnet synchronous motor-air conditioner compressor system without speed sensor
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  • Method or controlling permanent magnet synchronous motor-air conditioner compressor system without speed sensor

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Embodiment Construction

[0134] Figure 10 It is a structural block diagram of the hardware system of the present invention. The experimental hardware of the present invention adopts the motor control development system PE-Expert of Japan Myway Company, and this platform utilizes the DSP chip TMS320C32 of TI Company, and adopts C language programming. The hardware system is mainly composed of PC, DSP board, A / D, D / A converter, PWM generator and two-level voltage inverter specially designed for AC motor vector control. The system of the present invention detects the current of the PMSM stator circuit and the DC bus voltage of the inverter through the sensor, uses the development system PE-Expert to perform AD conversion, and performs sensorless vector control in its DSP, and in Figure 6 Coordinate transformation, PI adjustment and other modules involved in The PWM pulse is formed by the space vector modulation method to control the inverter, so as to realize the high-performance control of the perma...

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Abstract

This invention relates to nonvelocity sensor permanent-magnet synchro-motor-air conditioning compressor system. It is characterized by that nonvelocity sensor vector control is used for permanent-magnet synchromotor, so, overcoming the shortcoming of the large rotating speed pulsation. At the same time, the torque command current composite control method is used to make further lowering rotating speed pulsation of the motor. It overcomes the problem of unsatability of the system during the procedure of regulating PI regulator parameter in traditional vector control system.

Description

technical field [0001] The invention belongs to motor control technology, especially the technical field of application of permanent magnet synchronous motor in frequency conversion air conditioner. Background technique [0002] With the advent of the energy crisis worldwide, governments of various countries are actively promoting energy-saving and consumption-reducing technologies for the purpose of sustainable economic development. As one of the main equipment for household electricity consumption, the traditional fixed-frequency air conditioner is gradually withdrawing from the market due to its low operating efficiency. The new generation of inverter air conditioners has attracted the attention of the market because of its obvious energy-saving effect, stable temperature regulation, and low operating noise in the entire frequency range. [0003] With the continuous improvement and improvement of the performance of permanent magnet materials, and the gradual maturity of ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/10H02P21/00
Inventor 刘智超赵铁夫黄立培
Owner TSINGHUA UNIV
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