DM300027 Microchip Technology, DM300027 Datasheet - Page 38

• Manufacturer Part Number: DM300027
• Description: BOARD DEV STARTER PIC24 28-PIN
• Manufacturer: Microchip Technology
• Type: MCUr

Specifications of DM300027

• Contents: Board, Cables, CD, Sample Part
• Processor To Be Evaluated: dsPIC30F/PIC24F/dsPIC33F
• Data Bus Width: 16 bit
• Interface Type: USB
• Silicon Manufacturer: Microchip
• Core Architecture: PIC, DsPIC
• Core Sub-architecture: PIC24, DsPIC30, DsPIC33
• Silicon Core Number: PIC24F, DsPIC30F, DsPIC33F
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: dsPIC30F/33F and PIC24
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Summary
This dsPIC33F/E application note describes the process of
integrating two complex applications: PFC and Sensorless
FOC. Harmonic content in input current can be reduced
by implementing Power Factor Correction and efficient
control of a motor can be realized using Sensorless Field
Oriented Control (FOC) techniques. These applications are
implemented on a Permanent Magnet Synchronous Motor
(PMSM). In addition, this application notes also describes
the integration of algorithms, lists the necessary hardware
requirements and provides guidelines to optimize the
development procedure.
Capabilities of this Application Solution
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Summary
This dsPIC33F/E application note presents a sensorless
Field Oriented Control (FOC) for Permanent Magnet
Synchronous Motor (PMSM) using a PLL type estimator. The
novelty of this sensorless control approach is the speed
and angle estimator implementation, with a simple but
robust and versatile design, making it suitable for most of
the PMSM motors. The estimation requires only two current
shunts measurement, while the FOC assures separate
control of torque and field current components – permitting
Field Weakening (FW) technique to be applied.
Capabilities of this Application Solution
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Integrated Power Factor Correction (PFC) and
Sensorless Field Oriented Control (FOC) System
Application Note: AN1208 • Ready-to-Use Solution
Sensorless Field Oriented Control for Permanent Magnet
Synchronous Motor Using a PLL Estimator and Field Weakening
Application Note: AN1292 • Ready-to-Use Solution
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PFC Implemented to improve overall efficiency
Reduced harmonics
FOC control of AC induction motor provides an improved
transient response
Use of PLL estimator enables very low speed of operation
of motor
Sensorless FOC reduces cost of hardware and increases
reliability
Proven Software Source Code
Proven Software Source Code
Software Solutions and Tools for the 16-bit and 32-bit Designer
dsPICDEM™ MCLV
Development Board
(DM330021)
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dsPICDEM™ MCHV
Development Board
(DM330023)
Sensorless FOC reduces cost of hardware and increases
reliability
FOC algorithm maintains a tighter control on performance
of motor and hence preferred over simple V/F control
Uses a SMO estimator which is more tolerant to motor
parameter variations than a PLL
Improves efficiency of system and reduces disturbance on
supply line
FOC algorithm maintains a tighter control on the
performance of motor
Use of field weakening extends the usable speed range
of PMSM
dsPICDEM™ MCHV
Development Board
(DM330023)