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.
Excitation system ABB module XVC770BE101 3BHE021083R0101
Excitation system ABB module XVC770BE101 3BHE021083R0101
Excitation system ABB module XVC770BE101
Excitation system ABB module XVC770AE 3BHE006414R0001
Excitation system ABB module XVC770AE 3BHE006414R0001
Excitation system ABB module XVC769AE101 3BHE006373R0101
Excitation system ABB module XVC769AE101 3BHE006373R0101
Excitation system ABB module XVC769AE101 3BHE006373R0101
Excitation system ABB module XVC769AE101
Excitation system ABB module XVC769AE101
Excitation system ABB module XVC768AE117 3BHB007211R0117
Excitation system ABB module XVC768117 3BHB007211R117
Excitation system ABB module XVC768115 3BHB7211R115
Excitation system ABB module XVC768115 3BHB007211R115
Excitation system ABB module XVC768106 3BHB007211R106
Excitation system ABB module XVC768102 3BHB007211R102
Excitation system ABB module XVC768101 3BHB007211R101
Excitation system ABB module XVC767AE105 3BHB007209R0105
Excitation system ABB module XVC767AE105 3BHB007209R0105
Excitation system ABB module XVC767AE102 3BHB007209R0102
Excitation system ABB module XVC767AE102 3BHB007209R0102
Excitation system ABB module XVC724BE101 3BHE009017R0101
Excitation system ABB module XVC724BE101 3BHE009017R0101
Excitation system ABB module XVC724BE 3BHE009017R0102
Excitation system ABB module XVC722AE101 3BHB002751R0101
Excitation system ABB module XV9738a HEIE450617R
Excitation system ABB module XV9738a
Excitation system ABB module XTB750B01 HUCD420038R0001 HIEE440503P201
Excitation system ABB module XS321A-E
Excitation system ABB module XS321A
Excitation system ABB module XO08R2 1SBP260109R1001
Excitation system ABB module XO08R2 1SBP260109R1001
Excitation system ABB module XO08R2 1SBP260109R1001
Excitation system ABB module XO08R2
Excitation system ABB module XM06B5
Excitation system ABB module XI16E1
Excitation system ABB module VPM810
Excitation system ABB module VPM810
Excitation system ABB module VCD-02 3HNA006565-001
Excitation system ABB module VBX01T-VBX01B
Excitation system ABB module VBX01T-VBX01B
Excitation system ABB module VBX01TA
Excitation system ABB module VBX01TA
Excitation system ABB module VBX01BA
Excitation system ABB module VBX01BA
Excitation system ABB module VBS01-EPD
Excitation system ABB module VBS01
Excitation system ABB module V4550202-0100
Excitation system ABB module V17152-310
Excitation system ABB module V17152-310
Excitation system ABB module V17111-110
Excitation system ABB module UUD148AE02 3BHE014185R0002
Excitation system ABB module UUD148AE02
Excitation system ABB module UUD148AE01 3BHE014185R0001
Excitation system ABB module USC329AE01-1 3BHB002483R0001
Excitation system ABB module USC329AE01 3HB002483R0001
Excitation system ABB module USC329AE01 3BHB002483R0001
Excitation system ABB module USC329AE01
Excitation system ABB module UPC325AE01 3BHB000644R0001
Excitation system ABB module UNS4881b,V4 3BHE009949R0004
Excitation system ABB module UNS3670A-Z,V2 HIEE205011R0002
Excitation system ABB module UNS3020 HIEE205010R0003
Excitation system ABB module UNS3020 HIEE205010R0001
Excitation system ABB module UNS2980c-ZV4
Excitation system ABB module UNS2882A 3BHE003855R0001
Excitation system ABB module UNS2882A
Excitation system ABB module UNS2881B-PV1
Excitation system ABB module UNS2881b-P,V1 3BHE009319R0001
Excitation system ABB module UNS2880b-P,V2 3BHE014967R0002
Excitation system ABB module UNS2880B-P,V1
Excitation system ABB module UNS2880B-P
Excitation system ABB module UNS0887A-P 3BHE008128R0001
Excitation system ABB module UNS0885A-ZV1
Excitation system ABB module UNS0885a-Z V1 3BHB006943R0001
Excitation system ABB module UNS0884A-V1
Excitation system ABB module UNS0883a-P,V1
Excitation system ABB module UNS0881a-P,V1 3BHB006338R0001
Excitation system ABB module UNS0880a-P,V1
Excitation system ABB module UNS0874A
Excitation system ABB module UNS0868A-P HIEE305120R2
Excitation system ABB module UNS0867 A-P V2
Excitation system ABB module UNS0862A HIEE405179R0001
Excitation system ABB module UNS0122A-P
Excitation system ABB module UNS0119A-P,V101
Excitation system ABB module UNS0017A-P HIER464920P0001
Excitation system ABB module UNS0007A-PV1 HIEE305098R0001 HIEE410730P201
Excitation system ABB module UNS0007A-PV1
Excitation system ABB module UNITROL5000 3BHE017671R5000
Excitation system ABB module UNITROL1020
Excitation system ABB module UNITROL1010
Excitation system ABB module UNITROL1000 B-Z V104 3BHE014557R6104
Reviews
There are no reviews yet.