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EETE FEB 2014

Permanent Magnet Synchronous Motors Motor Control and Drive Design Solutions PMSM Motor Control Permanent Magnet Synchronous Motors (PMSM) are brushless and have very high reliability and high efficiency. Due to permanent magnet rotor, they also have higher torque with smaller frame size and no rotor current, of all which are advantages over AC induction motors. With a high power-to-size ratio, PMSMs can help you make your design smaller without the loss of torque. PMSMs need to be commutated like BLDC motors, but due to the construction of the windings, the waveforms need to be sinusoidal for good performance. This requires more complicated control algorithms and, therefore, a higher performing controller like Microchip’s dsPIC digital signal controllers. Microchip offers development tools and applications notes to develop advanced PMSM control solutions like sensorless Field Oriented Control (FOC). + PMSM Application Notes and Tuning Guides Algorithm dsPIC® DSC Family Sensored AN957 Sensored Sinusoidal AN1017 Sensorless BEMF AN901, AN992 Algorithm App Note Sensorless Filtered BEMF with Majority Detect AN1160 Sensorless Dual-Shunt FOC with SMO Estimator and Field Weakening AN1078 Sensorless Dual-Shunt FOC with SMO and PCF AN1208 Sensorless Dual-Shunt FOC with PLL Estimator and Field Weakening AN1292 Sensorless Single-Shunt FOC with SMO Estimator and Field Weakening AN1299 Sensorless Dual-Shunt FOC with SMO Estimator BLDC/PMSM AN1078 Sensorless Dual-Shunt FOC with PLL Estimator BLDC/PMSM AN1292 Tuning Guide: Sensorless Single-Shunt FOC with SMO Estimator BLDC/PMSM AN1299 PMSM Motor Training Class Title Language Recording Date Duration Sensorless Field Oriented Control for Permanent Magnet Synchronous Motors English 03/30/2007 30 min. PIC® Microcontroller or Digital Signal Controller Gate Drivers Inverter VBUS Motor Mechanical Feedback – Op Amp – + VREF Comparator PMSM Development Tools dsPICDEM MCLV-2 Development Board (DM330021-2) This development board is intended for low-voltage (up to 48V at 10A) BLDC sensored or sensorless applications. It provides a low-cost system for users to evaluate and develop applications using dsPIC33F/E motor control DSCs via a Plug-In Module (PIM) or 28-pin SOIC socket. With the MCLV-2 either the internal, on-chip op amps or the external op amps on the MCLV-2 board can be used. Microchip provides PIMs for using either the internal or external op amps. The MCLV-2 is fully backwards compatible with the original MCLV and all MC PIMs. Serial interfaces include RS-232C, CAN, LIN and USB (for RTDM). Feedback support includes Hall- Effect Sensors, Shaft Encoder, Back EMF voltages and single or dual shunt resistors for current. PICkit 3 Debug Express, MPLAB ICD 3 In-Circuit Debugger or MPLAB REAL ICE In-Circuit Emulator is required for programming or debugging operations. dsPICDEM MCHV-2 Development System (DM330023-2) This development system is intended for high-voltage (up to 400V at 6.5A) BLDC, PMSM and ACIM sensored or sensorless applications. It provides a low-cost Integrated Power Module (IPM) based system for users to evaluate and develop applications using dsPIC33F/E motor control DSCs via PIM or a 28-pin SOIC socket. With the MCHV-2 either the internal, on-chip op amps or the external op amps on the MCHV-2 board can be used. Microchip provides PIMs for using either the internal or external op amps. The MCHV-2 is fully backwards compatible with the original MCHV and all MC PIMs. Isolated serial interfaces include RS-232C and USB (for RTDM). Feedback support includes Hall-Effect Sensors, Shaft Encoder, Back EMF voltages and single or dual current shunt resistors. A PFC circuit is provided to meet regulatory requirements. An isolated built-in debugger (similar to a starter kit programmer/debugger) permits a direct connection with a PC. 24V 3-Phase Brushless DC Motor (AC300020) The 24V 3-phase Brushless DC (BLDC) motor with Hall-Effect sensors can be used with the dsPICDEM MCLV-2 development board (DM330021-2). 24V 3-Phase Brushless DC Motor with Encoder (AC300022) This Brushless DC (BLDC) motor has a 250-line encoder, and can be used with the dsPICDEM MCLV-2 Development Board (DM330021-2).


EETE FEB 2014
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