Description
hardware flow control. It is an ideal choice in the field of industrial automation.
Distinguished according to whether there is a position sensor, first of all, it is divided into sensing
and non-sensing. That is, whether Hall or other similar position sensors are used to sense the
position angle of the stator and rotor. In air pump applications, many use non-inductive control.
The excellent algorithm of through-hole is that after the motor is running, it detects the changes in
phase current to switch the phase current. In some heavy-duty or precise control applications,
sensory methods are used.
According to the three-phase power supply of the inverter, it can be divided into square wave control
and sine wave control. The square wave control strategy is simple, and the control process is direct
and effective. It adopts a six-step commutation strategy. The CPU modulates the PWM to drive the
power switch tube to generate a three-phase power supply that can run the motor. The control strategy
of sine wave is relatively complex, but the control effect is much better.
In sine wave control, there are two main control strategies.
One is direct torque control DTC Baidu Encyclopedia. The method is to calculate the estimated values
of motor flux and torque based on the measured motor voltage and current. After controlling the torque,
the motor speed can also be controlled. Direct torque control is a patent of the European ABB company. .
The second is, space vector control FOC Baidu Encyclopedia. Its essence is to equate an AC motor to a DC
motor, and independently control the speed and magnetic field components. By controlling the rotor flux linkage,
and then decomposing the stator current, the two components of torque and magnetic field are obtained. After
coordinate transformation, the normal motor is realized. handover or decoupling control.
During sine wave control, there are many derived more sophisticated control strategies, such as feedforward
control, maximum torque control, field weakening control, etc.
In the process of controlling the motor, there are multiple feedback control loops. When controlling the output
of the motor, there is a current loop; on this basis, there is a control loop that controls the speed; when a servo
motor is used, there is a position loop control.
Excitation system ABB module TK890F
Excitation system ABB module TK854V030
Excitation system ABB module TK853V020
Excitation system ABB module TK851V010/3BSC950262R1
Excitation system ABB module TK850V007
Excitation system ABB module TK831F
Excitation system ABB module TK831F
Excitation system ABB module TK821F
Excitation system ABB module TK821F
Excitation system ABB module TK817F
Excitation system ABB module TK817F
Excitation system ABB module TK812V150
Excitation system ABB module TK812V050
Excitation system ABB module TK812V050
Excitation system ABB module TK812V015
Excitation system ABB module TK812V015
Excitation system ABB module TK811V150
Excitation system ABB module TK811V150
Excitation system ABB module TK811V050
Excitation system ABB module TK811V050
Excitation system ABB module TK811V015
Excitation system ABB module TK811V015
Excitation system ABB module TK811F
Excitation system ABB module TK811F
Excitation system ABB module TK809F
Excitation system ABB module TK809F
Excitation system ABB module TK808F
Excitation system ABB module TK807F
Excitation system ABB module TK807F
Excitation system ABB module TK803V018 3BSC950130R1
Excitation system ABB module TK802F
Excitation system ABB module TK802F
Excitation system ABB module TK801V012
Excitation system ABB module TK801V012
Excitation system ABB module TK801V006
Excitation system ABB module TK801V006
Excitation system ABB module TK801V003/3BSC950089R1
Excitation system ABB module TK801V003
Excitation system ABB module TK801V003
Excitation system ABB module TK701F
Excitation system ABB module TK527V030
Excitation system ABB module TK516 3BSE000388R1
Excitation system ABB module TK516
Excitation system ABB module TK212A
Excitation system ABB module TK212A
Excitation system ABB module TK212
Excitation system ABB module TK212
Excitation system ABB module TD951F
Excitation system ABB module TC630
Excitation system ABB module TC625
Excitation system ABB module TC562
Excitation system ABB module TC560V2 3BSE022178R1
Excitation system ABB module TC520 3BSE001449R1
Excitation system ABB module TC514
Excitation system ABB module TC512V1 3BSE018059R1
Excitation system ABB module TC512V1
Excitation system ABB module TC512
Excitation system ABB module TC405K03
Excitation system ABB module TBU810
Excitation system ABB module TB870F
Excitation system ABB module TB870F
Excitation system ABB module TB852
Excitation system ABB module TB852
Excitation system ABB module TB850 3BSC950193R1
Excitation system ABB module TB850
Excitation system ABB module TB850
Excitation system ABB module TB845
Excitation system ABB module TB842
Excitation system ABB module TB840A 3BSE037760R1
Excitation system ABB module TB840A
Excitation system ABB module TB840
Excitation system ABB module TB826 3BSE061637R1
Reviews
There are no reviews yet.