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
IS200WNPSH1ABA GE relay
IS200WETBH1ABA GE Component-dense board
IS200VTURH2BAC GE Primary turbine protection plate
IS200VTCCH1CBB GE Thermocouple input
IS200VRTDH1D GE I Board Components
IS200VCRCH1B GE Single groove plate
IS200VAICH1DAB GE Analog input
IS200TVIBH2BBB GE Vibration stop plate
IS200TVBAH2ACC GE Turbine control system
IS200TTURH1CFD GE The terminal board
IS200TSVCH1AJE GE Servo terminal board
IS200TRPAH2AHE GE End plate
IS200TREGH1BEC GE Board assembly
IS200TREAH2AED GE Turbine emergency trip model
IS200TPROS1CBB GE Turbine control system
IS200TPROH1BCB GE Redundant processor
IS200TDBTH6ACD GE Discrete simplex board
IS200TDBTH6ABC GE Simplex plate element
IS200TBCIS2CCD GE Isolation plate input
IS200TBCIH2CAA GE Single board component
IS200TBAIH1CCC GE Analog terminal board
IS200STCIH6AED GE Printed Circuit Board (PCB)
IS200STCIH2A GE Gas turbine management system
IS200SRTDH2ACB GE Printed circuit board
IS200SPIDG1ABA GE Master communication board
IS200SDIIH1ADB MRP683026 GE controller
IS200SAMBH1ABA GE TMR(Three-module redundancy) system
IS200JPDDG1AAA GE PCB module
IS200ISBBG2AAB GE Input synchronous bus bypass board
IS200HSL AH2ADE GE SLR LNK Interface
IS200ERIOH1AAA GE Excitation regulator
IS200EPSMG1AED GE Exciting power supply
IS200EGPAG1BCA GE Gate pulse amplifier board
IS200EGDMH1AFF GE Excitation field grounding detection module
IS200EGDMH1ADF GE Vibration exciter ground detection module
IS200DTAOH1ABA GE Printed circuit board
IS200DTAIH1ABB GE Ethernet communication
IS200DSPXH1DBD GE Energy system
IS200DSPXH1DBC GE Board assembly
IS200AEADH4ADA GE Steam turbine system
PFEA112-20-3BSE050091R20 ABB Tension amplifier
PFEA111-65-3BSE050090R65 ABB Tension amplifier
PFEA111-20-3BSE028140R0020 ABB Tension controller
PBSE5117 ABB Analog current monitor
PBSE1095 ABB Line reactor
HP-E1421B
IS200AEADH4ADA GE Orthogonal four-channel decoder
Hima-F7553 Processor module
Hima-F4301 High performance safety controller
HIMA-F3335 Industrial control module
Hima-F3322 Industrial controller
HIMA-B4231 Security module
Hima-99-2413602
HESG447351R0001—70BK06a-E ABB Serial Interfa
H7506 HIMA Relay module
H4135A-99-2413560 HIMA Safety relay
Reviews
There are no reviews yet.