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
ALSTOM 730475-D ELEMENTS-F2 PCD board
ALSTOM 42011-106-00 A01 ITC_VIOM_VIOC VER.A01
ALSTOM 12004-102-01 VPS BOARD VER.C
HIMA H51q-HRS B5233-2 997205233 central rack 19 inches, 5 HU
HIMA H51q-H B5233-2 997235233 central rack 19 inch, 5 HU
A-B 1746-TB3G terminal base
1794-ASB Flex I/O Communication Adapter
A-B 1794-OB8EP Flex I/O Digital DC Output Module
Allen-Bradley 1794-IE8 Flex I/O analog input module
A-B 1794-IR8 Flex I/O RTD Module
Allen-Bradley 1794-IB16 FLEX I/O Input Module
Schneider TSX3721101 Modular Base Controller 24 V
Allen-Bradley1756-EN2T EtherNet/IP Bridge Module
1756-IF16 ControlLogix Analog Input Module
Allen-Bradley 1756-PA72 ControlLogix Standard Power Supply
1756-A7 Small and compact chassis
S22460-SRS S200 Brushless Servo Driver
KSD1-08 KUKA 00-122-284 Servo Module
1756-ENBT/A EtherNet/IP 10/100 Bridge Module
A-B 1756-IB32 input module
1786-RPA/B A-B repeater adapter
A-B 1756-RM2 ControlLogix Redundancy Modules
TRICONEX 3805E nalog Output Modules 3806E
XTB750B01 HUCD420038R0001 HIEE440503P201 ABB PCD board
SAM ELETRONICS EMP2200 controller
TRICONEX 4351B communication module
140471-01 I/O modules
87-008145-03 PARKER Microstepping Drive
CI541V1 3BSE014666R1 Profibus Interface Submodule
9907-247 Woodward 828 Digital Control Hardware
9907-033 speed control device
9907-034 DSLC Digital Synchronizer
9907-032 High Voltage Woodward Model 723
9907-031 723 Digital Speed Controller
9906-700 Woodward Digital Controls
9906-620 723PLUS Digital Control Model
9906-619 Woodward 723PLUS Digital Control Hardware
9906-131 Woodward 723 Digital Control
9906-130 723 digital control
8301-1146 woodward governor
8280-608 digital synchronizer
8280-604 Digital Controllers in the 723PLUS Series
8280-598 Woodward Speed/Performance Control
8280-501 Woodward Digital Controller
8280-481 High Voltage (90 to 150 Vdc) Controller
8280-480 Shared Digital Speed Controller
8280-467 speed control device
8280-465 Digital Speed Controller
8280-466 723PLUS Digital Speed Control
8280-464 Digital Speed Control in the 723PLUS Series
8280-424 Digital Industrial Speed/Performance Controllers
8280-423 digital boat speed controller
8280-422 Digital Speed Controller
8280-419 723PLUS Digital Speed Controller
Reviews
There are no reviews yet.