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 07EA90-SI
Display operation panel 07EA90-S
Display operation panel 07EA80
Display operation panel 07EA65R1
Display operation panel 07EA62R1
Display operation panel 07EA60R1
Display operation panel 07EA200
Display operation panel 07DI92
Display operation panel 07DC92D GJR5252200R0101
Display operation panel 07DC91C
Display operation panel 07CS61
Display operation panel 07CR41
Display operation panel 07BV60R1
Display operation panel 07BT60R1
Display operation panel 07BR61R1 GJV3074376R1
Display operation panel 07BR61R1
Display operation panel 07BE62R1
Display operation panel 07BE61R1
Display operation panel 07BE60R1
Display operation panel 07BA60R1
Display operation panel 07AS82
Display operation panel 07AI91 GJR5251600R4202
Display operation panel 07AI91
Display operation panel 07AI91
Display operation panel 07AC91R101
Display operation panel 07AC91D GJR5252300R0101
Display operation panel 07AC91D
Display operation panel 07AC91D
Display operation panel 07AC91C
Display operation panel 07AC91B
Display operation panel 07AC91 GJR5252300R0101
Display operation panel 07AC91 ABB
Display operation panel 07AC91
Display operation panel 07AC91
Display operation panel 07AB90-S
Display operation panel 07AB67R1
Display operation panel 07AB61R1
Display operation panel 07AB60R1
Display operation panel 07AB200
Display operation panel 07AA80
Display operation panel 07AA65R1
Display operation panel 07AA63
Display operation panel 07AA62R1
Display operation panel 07AA61R1
Display operation panel 07AA60R1
Display operation panel 050992 OMNISKIP
Display operation panel 050745 EICB
Display operation panel 050581 RACSII 050328 LSDCM
Display operation panel 050581 BCI 050368 RING GENERATOR
Display operation panel 050546 DC/DC 050992 OMNISKIP
Display operation panel 050368 RING GENERATOR 050328 LSDCM
Display operation panel 050328 LSDCM
Display operation panel 050290 FXS
Display operation panel 050183 TCM4-4W
Display operation panel 050183 TCM4
Excitation system ABB module ZT372a-E
Excitation system ABB module ZMU-02内存卡
Excitation system ABB module YYT107A
Excitation system ABB module YYT102N
Excitation system ABB module YYT102M
Excitation system ABB module YYT102D
Excitation system ABB module YYT102C
Excitation system ABB module YYE109A
Excitation system ABB module YXU168E YT204001-JB/1
Excitation system ABB module YXU168E
Excitation system ABB module YXU168E
Excitation system ABB module YXI115B
Excitation system ABB module YXE152A YT204001-AF
Excitation system ABB module YXE152A
Excitation system ABB module YXC110
Excitation system ABB module YTEA250-8
Excitation system ABB module YTEA250-15
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