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 PHBRMU10010000
Display operation panel PHBRMU1000N200
Display operation panel PHBRMU1000N100
Display operation panel PHBRLY20000000
Display operation panel P-HB-IOR-80010000
Display operation panel P-HB-IOR-8000N200
Display operation panel P-HB-IOR-8000N200
Display operation panel P-HB-FIO-1000C100
Display operation panel PHBDOT1200S100
Display operation panel P-HB-DOT-1200K100
Display operation panel P-HB-DOT-1200C100
Display operation panel PHBDOT1000S100
Display operation panel PHBDIO4000S200
Display operation panel PHBDIO4000S100
Display operation panel PHBDIO4000R100
Display operation panel PHBDIO4000C200
Display operation panel PHBDIO4000C100
Display operation panel PHBCIO1000S100
Display operation panel PHBCIO1000C100
Display operation panel PHBBLK10010000
Display operation panel PHBBLK10000100
Display operation panel PHBAOT1500S100
Display operation panel PHBAOT1500C200
Display operation panel P-HB-AOT-1500C100
Display operation panel P-HB-AIN-3000S200
Display operation panel P-HB-AIN-3000S100
Display operation panel P-HB-AIN-3000K100
Display operation panel P-HB-AIN-3000C100
Display operation panel PHBAIN2200S200
Display operation panel PHBAIN2200S100
Display operation panel PHBAIN2200C200
Display operation panel PHBAIN2200C100
Display operation panel PHBAIN12010000
Display operation panel PHBAIN1200S200
Display operation panel PHBAIN1200S100
Display operation panel PHBAIN1200C100
Display operation panel P-HA-RPS-PEP21013
Display operation panel PHARPSPEP11013
Display operation panel PHARPSFAN03000
Display operation panel PHARPSFAN03000
Display operation panel PHARPSFAN03000
Display operation panel P-HA-RPS-CH100000
Display operation panel PHARPSCH100000
Display operation panel PHARPSCH100000
Display operation panel PHARPSCH100000
Display operation panel P-HA-RPS-40000000
Display operation panel PHARPS40000000
Display operation panel PHARPS40000000
Display operation panel PHARPS40000000
Display operation panel P-HA-RPS-32200000
Display operation panel P-HA-RPS-32200000
Display operation panel P-HA-RPS-32200000
Display operation panel PHARPS32200000
Display operation panel PHARPS32200000
Display operation panel PHARPS32010000
Display operation panel PHARPS32010000
Display operation panel P-HA-RPS-32000000
Display operation panel P-HA-RPS-32000000
Display operation panel PHARPS32000000
Display operation panel PHARPS32000000
Display operation panel PHARPS32000000
Display operation panel PHARPS3200000
Display operation panel PHARPS21200000
Display operation panel PHARPS21010000
Display operation panel PHARPS21000000
Display operation panel PHARPS11100000
Display operation panel PHARPS11010000
Display operation panel P-HA-RPS-11000000
Display operation panel PHARPS11000000
Display operation panel PHARPS03000000
Display operation panel PHARPS03000000
Display operation panel PHARPS03000000
Display operation panel PHARPS02200000
Display operation panel PHARPS02010000
Display operation panel PHARPS00200000
Display operation panel PHARPS00010000
Display operation panel PHAREPRFO10000
Display operation panel PHAMSCTER20000
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