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Motor driving device and apparatus including same device

A technology of motor driving and feeding device, which is applied in the direction of controlling electromechanical transmission device, electromechanical device, restraining motor vibration control, etc., can solve problems such as hindering the running quality of the device

Inactive Publication Date: 2009-01-28
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vibration blocking device is precisely controlled, thus hindering the improvement of the running quality of the whole device

Method used

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  • Motor driving device and apparatus including same device
  • Motor driving device and apparatus including same device
  • Motor driving device and apparatus including same device

Examples

Experimental program
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Effect test

no. 1 example

[0038]According to the first embodiment, the operation of the motor drive device is described with reference to Figs. 2-6. FIG. 2 shows the operation of the wide-angle feed signal generator 90. As shown in Fig. 2, the generator 90 outputs signals UH0, UL0, VH0, VL0, WH0, WL0. When the electrical angle is maintained at 150 degrees, these output signals stay at the level'H'. These signals are generated by the position detection signals Hu, Hv, and Hw detected by the respective position detectors 101, 103, and 105.

[0039] Generally, the signals Hu, Hv, and Hw have a phase difference of 120 degrees in electrical angle with each other. Therefore, if these signals are combined together in theory, when the electrical angle is 150 degrees, it is possible to generate a signal staying at the level'H'. However, one cycle of at least one of the signals Hu, Hv, and Hw (for example, the signal Hu) is measured, and then this cycle is equally divided by an electrical angle of 15 degrees apart. ...

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PUM

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Abstract

A motor driving device includes (a) a wide-angle feeding device (1) for feeding power to three-phase coils (11, 13, 15) in a width of 150 degrees in electrical angles and (b) a feeding amount controller (2) for controlling a feeding amount to the coils (11, 13, 15). During overlapping periods, in which adjacent coils out of the coils (11, 13, 15) are in the same fed condition, an amount of a first value is fed to the coils (11, 13, 15) and an amount of a second value is fed during the periods other than the overlapping periods. This structure allows the motor to reduce torque ripples, vibrations as well as noises during its operation, and at the same time, the motor can produce a greater output and operate at higher efficiency.

Description

Technical field [0001] The present invention relates to a motor drive device for driving a brushless DC motor, which can be used in information devices such as air conditioners, air cleaners, hot water supply devices, and information devices such as copiers, printers, optical media devices, and hard disk devices. It also relates to a driving device used to drive induction motors and reluctance motors or similar motors. More specifically, it relates to a motor drive device that can reduce torque ripple, vibration, and noise during motor operation to a large extent. The invention also provides a device including the motor drive device. Background technique [0002] Brushless DC motors are widely used as a driving motor for air conditioners and information devices. This is because of its advantages such as long service life, high stability, and simple speed control. FIG. 9 is a schematic circuit diagram of a conventional motor driving device, and FIG. 10 shows the signal waveforms o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K29/08H02P6/10H02P6/14H03K17/06H02P23/00H02P6/06H02P6/08H02P8/12H02P21/05H02P23/04H02P23/07H02P25/03
CPCH02P6/10
Inventor 八十原正浩坪内俊树杉浦贤治
Owner PANASONIC CORP