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.
Display operation panel IMDSO01
Display operation panel IMDSM05
Display operation panel IMDSM05
Display operation panel IMDSM04
Display operation panel IMDSM04
Display operation panel IMDSM04
Display operation panel IMDSM04
Display operation panel IMDSM04
Display operation panel IMDSI22-ABX
Display operation panel IMDSI22-ABX
Display operation panel IMDSI22
Display operation panel IMDSI22
Display operation panel IMDSI22
Display operation panel IMDSI22
Display operation panel IMDSI15
Display operation panel IMDSI14
Display operation panel IMDSI14
Display operation panel IMDSI14
Display operation panel IMDSI13
Display operation panel IMDSI13
Display operation panel IMDSI12
Display operation panel IMDSI02
Display operation panel IMDSI02
Display operation panel IMDS014
Display operation panel IMDS014
Display operation panel IMDS004
Display operation panel IMDER02
Display operation panel IMDER01
Display operation panel IMCPM02
Display operation panel IMCPM01
Display operation panel IMCOM04
Display operation panel IMCOM03
Display operation panel IMCKN02
Display operation panel IMCKN01
Display operation panel IMCIS22
Display operation panel IMCIS22
Display operation panel IMCIS22
Display operation panel IMCIS22
Display operation panel IMCIS12
Display operation panel IMCIS02
Display operation panel IMCIS02
Display operation panel IMCIS02
Display operation panel IMBLK01
Display operation panel IMBLK01
Display operation panel IMASO11
Display operation panel IMASO11
Display operation panel IMASO11
Display operation panel IMASO01
Display operation panel IMASM04
Display operation panel IMASM03
Display operation panel IMASM02S
Display operation panel IMASM02
Display operation panel IMASM01
Display operation panel IMASI23
Display operation panel IMASI23
Display operation panel IMASI23
Display operation panel IMASI23
Display operation panel IMASI13
Display operation panel IMASI13
Display operation panel IMASI03
Display operation panel IMASI02S
Display operation panel IMASI02
Display operation panel IMASI02
Display operation panel IMAS113
Display operation panel IMAS011
Display operation panel IMAS011
Display operation panel IMAS001
Display operation panel IMAOM01
Display operation panel IMAMM03
Display operation panel IMAMI01
Display operation panel IKTU02-3
Display operation panel IKTU01-6.6
Display operation panel IKLS01-2.2
Display operation panel IKLM01-5
Display operation panel IKLM01-3
Display operation panel IKAS01-6.4
Reviews
There are no reviews yet.