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 3HAC023172-002
Display operation panel 3HAC023170-002
Display operation panel 3HAC023149-001
Display operation panel 3HAC023046-001
Display operation panel 3HAC022963-001
Display operation panel 3HAC02286-001/05
Display operation panel 3HAC022764-004
Display operation panel 3HAC022764-003
Display operation panel 3HAC022708-001
Display operation panel 3HAC022692-005
Display operation panel 3HAC022692-004
Display operation panel 3HAC022658-001
Display operation panel 3HAC022644-001
Display operation panel 3HAC022612-001
Display operation panel 3HAC022488-001
Display operation panel 3HAC022487-002
Display operation panel 3HAC022481-001
Display operation panel 3HAC022479-001
Display operation panel 3HAC022475-002
Display operation panel 3HAC022472-001
Display operation panel 3HAC022319-001
Display operation panel 3HAC022279-002
Display operation panel 3HAC022232-001
Display operation panel 3HAC022176-001
Display operation panel 3HAC022151-005
Display operation panel 3HAC022010-001
Display operation panel 3HAC021799-003
Display operation panel 3HAC021778-012
Display operation panel 3HAC021778-001
Display operation panel 3HAC021745-001
Display operation panel 3HAC021738-003
Display operation panel 3HAC021726-001
Display operation panel 3HAC021716-001
Display operation panel 3HAC021696-001
Display operation panel 3HAC021652-002
Display operation panel 3HAC021652-001
Display operation panel 3HAC021651-002
Display operation panel 3HAC021651-001
Display operation panel 3HAC021644-002
Display operation panel 3HAC021643-002
Display operation panel 3HAC021609-001
Display operation panel 3HAC021602-001
Display operation panel 3HAC021590-001
Display operation panel 3HAC021587-001
Display operation panel 3HAC021541-003
Display operation panel 3HAC021541-002
Display operation panel 3HAC021539-001
Display operation panel 3HAC021519-001
Display operation panel 3HAC021518-001
Display operation panel 3HAC021517-001
Display operation panel 3HAC021127-001
Display operation panel 3HAC020208-001/04
Display operation panel 3HAB9271-1/01B
Display operation panel 3HAB8859-1/03A
Display operation panel 3HAB8101-8/08Y
Display operation panel 3HAB8101-7/09A
Display operation panel 3HAB8101-3
Display operation panel 3HAB8101-19 DSQC545A
Display operation panel 3HAB8101-18/09A
Display operation panel 3HAB3700-1
Display operation panel 3E-034403
Display operation panel 3BUS212547-001
Display operation panel 3BUS208800-001
Display operation panel 3bse093347k1
Display operation panel 3BSE076940R1 PM862K01
Display operation panel 3BSE052604R1
Display operation panel 3BSE050090R20
Display operation panel 3BSE049768R1
Display operation panel 3BSE043660R1
Display operation panel 3BSE042244R3
Display operation panel 3BSE042238R2
Reviews
There are no reviews yet.