Description
hardware flow control. It is an ideal choice in the field of industrial automation.
The most fundamental reason for distinguishing these two motor types is that the
design of the air gap magnetic field is different. So the following differences arise
The back EMF waveform is different:
BLDC: Approximate trapezoidal wave (ideal state);
PMSM: sine wave (ideal state);
The three-phase current waveforms are different:
BLDC: Approximate square wave or trapezoidal wave (ideal state);
PMSM: sine wave (ideal state);
Differences in control systems:
BLDC: usually includes position controller, speed controller and current (torque) controller;
PMSM: Different control strategies will have different control systems;
Controls are different:
BLDC: 120-degree square wave current, using PWM control;
PMSM: Positive Xuan wave current, controlled by SPWM SVPWM.
However, in actual control, brushless DC can also be controlled by FOC, and permanent magnet
synchronous motors can also be controlled by square waves.
Just like the controllers of electric vehicles, I have disassembled and studied three or four. The interfaces are
all the same, the control chips are different, and of course the control algorithms are also different. Electric vehicles
controlled by sine waves have very low sound when starting and running, and there is no jitter during operation;
but electric vehicles controlled by square waves have very obvious sounds, and the jitter during operation can also
be felt. The judder is due to definite torque ripples.
Motors controlled by square waves have higher power efficiency, because motors controlled by sine waves have a lower effective voltage.
4. Control technology of permanent magnet synchronous motor
Permanent magnet synchronous motors and brushless DC motors can be operated using the same control method.
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BENTLY 330106-05-30-10-02-00
BENTLY 330108-91-05
BENTLY 330130-040-00-00
BENTLY 330130-040-01-00
BENTLY 330130-045-00-00
BENTLY 330130-080-00-00 Standard Extension Cable
BENTLY 330130-085-00-00
BENTLY 330180-90-05
BENTLY 330180-X1-CN
BENTLY 330703-000-070-10-02-05
BENTLY 330854-040-24-00
BENTLY 330901-05-32-05-02-00
BENTLY 330980-51-00
BENTLY 3500
BENTLY 3500/05-02-04-00-00-01
BENTLY 3500/05-01-02-00-00-01
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BENTLY 3500/15 133292-01
BENTLY 3500/20 125744-02
BENTLY 3500/22-01-01-00
BENTLY 3500/22M 288055-01
BENTLY 3500/22M 138607-01
BENTLY 3500/22M 288055-01
BENTLY 3500/25 125792-01
BENTLY 3500/25 149369-01
BENTLY 3500/32 125712-01
BENTLY 3500/32M 149986-02
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BENTLY 3500/33-01-00
BENTLY 3500/40M 176449-01
BENTLY 3500/40M(140734-01)
BENTLY 3500/42M 140734-02
BENTLY 3500/42M 176449-02
BENTLY 3500/45 176449-04
BENTLY 3500/45-01-00
BENTLY 3500/53 133388-01
BENTLY 3500/60 163179-01
BENTLY 3500/61 163179-02
BENTLY 3500/62
BENTLY 3500/70M 176449-08
BENTLY 3500/72M
BENTLY Communication gateway module 3500/91-01-01(161204-01+161216-01)
BENTLY 3500/92 136180-01
BENTLY 60M100-00
BENTLY 84152-01
BENTLY 9200-01-01-10-00
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