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.
https://www.xmamazon.com
https://www.xmamazon.com
https://www.plcdcs.com/
www.module-plc.com/
https://www.ymgk.com
ABB PFXA401F 3BSE024388R3
ABB junction box 3BSE029997R1
ABB junction box PFXC141
ABB PFXC141 3BSE029997R1
ABB operating unit 3BSE017235R1
ABB PXAH401 operating unit
ABB PXAH401 3BSE017235R1
ABB Thyristor 3BHL000986P0006
ABB Thyristor D1031SH45TS02
ABB Thyristor D1961SH45TS02
ABB 3BHB009885R0004 IGCT framework
ABB S-093H IGCT framework
ABB S-093H 3BHB009885R0004
ABB IGCT framework 3BHB018008R0003
ABB IGCT framework S-113H
ABB S-113H 3BHB018008R0003
HITACHI 2-822037-A
HITACHI LBT010A
HITACHI LCE250B
HITACHI LPA210A
HITACHI LPA220A
HITACHI LPA245A
HITACHI LPA302A
HITACHI LPA302P-1
HITACHI LPD220A
HITACHI LPD250A
HITACHI LPD350A
HITACHI LPF240A
HITACHI LPF240F
HITACHI LPP100A
HITACHI LPT020A
HITACHI LPU100A
HITACHI LPU100H
HITACHI LUD060A
HITACHI LUD700A
HITACHI LYA010A
HITACHI LYA100A
HITACHI LYA210A
HITACHI LYA220A
HITACHI LYD000A
HITACHI LYD105A
HITACHI LYT000A
HITACHI MPD060A
HITACHI MPD110A
HITACHI MPD310A
HITACHI PS6000
HITACHI PS6515
HITACHI PS6524
HITACHI PS6548
HITACHI TD000A
TERASAKI EGS-112A MAC-2S
TELEMECANIQUE-SCHNEIDER ELECTRIC TSX MICRO-TSX3722101
YAMATAKE J-SSP50-22
YAMATAKE J-SSP50-21
Reviews
There are no reviews yet.