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.
Control module DCS system spare parts NTR002-A
Control module DCS system spare parts NTR002-A
Control module DCS system spare parts NTPL01
Control module DCS system spare parts NTMU02
Control module DCS system spare parts NTMU01
Control module DCS system spare parts NTMP01
Control module DCS system spare parts NTMP01
Control module DCS system spare parts NTMF01
Control module DCS system spare parts NTMF01
Control module DCS system spare parts NTLS01
Control module DCS system spare parts NTLS01
Control module DCS system spare parts NTHS03
Control module DCS system spare parts NTHS03
Control module DCS system spare parts NTHS03
Control module DCS system spare parts NTFB01
Control module DCS system spare parts NTDRO01
Control module DCS system spare parts NTDO02
Control module DCS system spare parts NTDO01
Control module DCS system spare parts NTDI21-A
Control module DCS system spare parts NTDI21-A
Control module DCS system spare parts NTDI02
Control module DCS system spare parts NTDI01
Control module DCS system spare parts NTDI01
Control module DCS system spare parts NTDI01
Control module DCS system spare parts NTCU01
Control module DCS system spare parts NTCS04
Control module DCS system spare parts NTCS04
Control module DCS system spare parts NTCS02
Control module DCS system spare parts NTCS01
Control module DCS system spare parts NTCL01-A
Control module DCS system spare parts NTCL01
Control module DCS system spare parts NTCL01
Control module DCS system spare parts NTCL01
Control module DCS system spare parts NTCF23
Control module DCS system spare parts NTCF23
Control module DCS system spare parts NTCF23
Control module DCS system spare parts NTCF22
Control module DCS system spare parts NTCF22
Control module DCS system spare parts NTCF22
Control module DCS system spare parts NTCF21
Control module DCS system spare parts NTCF21
Control module DCS system spare parts NTCF21
Control module DCS system spare parts NTCF03
Control module DCS system spare parts NTCF02
Control module DCS system spare parts NTCF01
Control module DCS system spare parts NTAO01
Control module DCS system spare parts NTAM01
Control module DCS system spare parts NTAM01
Control module DCS system spare parts NTAI06
Control module DCS system spare parts NTAI06
Control module DCS system spare parts NTAI05
Control module DCS system spare parts NTAI05
Control module DCS system spare parts NTAI05
Control module DCS system spare parts NTAI04
Control module DCS system spare parts NTAI03
Control module DCS system spare parts NTAI02
Control module DCS system spare parts NTAI02
Control module DCS system spare parts NTAI01
Control module DCS system spare parts NTAC-02
Control module DCS system spare parts NTAC-02
Control module DCS system spare parts NTAC-02
Control module DCS system spare parts NSTM01
Control module DCS system spare parts NSSM01
Control module DCS system spare parts NSSM01
Control module DCS system spare parts NSPS02
Control module DCS system spare parts NSPS01
Control module DCS system spare parts NSPM01
Control module DCS system spare parts NSIM01
Control module DCS system spare parts NSBM01
Control module DCS system spare parts NRIO02
Control module DCS system spare parts NRDO02
Reviews
There are no reviews yet.