NXP Semiconductors BLDC Manuale utente

BLDC Control Demo User's Guide

1. Introduction

This document provides instructions for running and

controlling the Brushless DC (BLDC) sensorless

application with the Freedom and Tower System

development boards shown in Table 1.

The required software, hardware setup, jumper settings,

project arrangement, and user interface is described in

the following sections. For more information, see

Section 9, “References” or visit

www.nxp.com/motorcontrol_bldc.

NXP Semiconductors

Document Number: BLDCDEMO

User's Guide

Rev.

06/2020

Contents

1. Introduction ........................................................................1

2. Supported development boards...........................................2

3. Motor Control vs. SDK Peripheral Drivers ........................2

4. Hardware setup ...................................................................2

4.1. Linix 45ZWN24-40 motor.......................................3

4.2. MIGE 60CST-MO1330 motor ................................3

4.3. Tower System..........................................................4

4.4. Tower System assembly ..........................................8

4.5. Freedom development platform...............................9

4.6. High-Voltage Platform ..........................................15

5. Project file structure..........................................................15

6. User Interface ...................................................................17

6.1. Control button........................................................17

6.2. Remote control using FreeMASTER.....................17

7. Instructions .......................................................................21

7.1. Running the motor.................................................21

7.2. Stopping the motor ................................................21

7.3. Clearing a fault ......................................................21

7.4. Turning on demonstration mode............................21

8. Acronyms and abbreviations ............................................21

9. References ........................................................................22

10. Revision history................................................................22

Hardware setup

BLDC Control Demo User's Guide, Rev. 6, 06/2020

2 NXP Semiconductors

2. Supported development boards

There are three supported development boards with two Kinetis KV series motor-control MCUs for

motor-control applications. The development boards and supported MCUs are shown in Table 1.

The Tower System modular development platform and the Freedom development platform are targeted

for low-voltage and low-power applications with BLDC control type. The High-Voltage Platform

(HVP) is designed to drive high-voltage (115/220 V) applications with up to 1 kW of power.

Table 1. Supported development boards

—

Platform

FRDM TWR HVP

Power stage FRDM-MC-LVBLDC TWR-LV3PH HVP-MC3PH

MCU

KV11 FRDM-KV11Z — —

KV31 FRDM-KV31F — HVP-KV31F512

KV46 — TWR-KV46F150M HVP-KV46F150

KV58 — TWR-KV58F220M HVP-KV58F220M

KE15Z FRDM-KE15Z — —

KE18F — TWR-KE18F HVP-KE18F

KE16Z FRDM-KE16Z — —

3. Motor Control vs. SDK Peripheral Drivers

The motor-control examples use the SDK peripheral drivers to configure the general peripherals (such as

clocks, SPI, SIM, and ports). However, motor control requires critical application timing because most

control algorithms run in a 50-µs loop. To optimize the CPU load, most peripheral-hardware features are

implemented for the PWM signal generation, analog signal sampling, and synchronization between the

PWM and ADC units.

The standard SDK peripheral drivers do not support the configuration and handling of all required

features. The motor-control drivers are designed to configure the critical MC peripherals (eflexPWM,

FTM, ADC, and PDB).

It is highly recommended not to modify the default configuration of the allocated MC peripherals due to

a possible application-timing conflict. The particular mcdrv_< board&MCU >.c source file contains

configuration functions of allocated peripherals.

4. Hardware setup

The BLDC sensorless application runs on Tower System and Freedom development platforms with a

default 24-V Linix motor.

Hardware setup

BLDC Control Demo User's Guide, Rev. 6, 06/2020

NXP Semiconductors 3

4.1. Linix 45ZWN24-40 motor

The BLDC sensorless application uses the Linix 45ZWN24-40 motor described in Table 2. The motor

can be used with the Tower System or Freedom development platforms.

Table 2. Linix 45ZWN24-40 motor parameters

Characteristic Symbol Value Units

Rated Voltage

Rated Speed @ Vt

—

4000

RPM

Rated Torque

0.0924

Rated Power

Continuous Current

Ics

2.34

Number of Pole Pairs

—

Figure 1. Linix motor 45ZWN24-40

The motor has two types of cable connectors. One cable has three wires and it is designated to power the

motor. The second cable has five wires and it is designated for the Hall sensors signal sensing. Only the

power input wires are needed for the BLDC sensorless application.

4.2. MIGE 60CST-MO1330 motor

The MIGE 60CST-MO1330 motor (described in Table 3) is primarily used for the Permanent Magnet

Synchronous Motor (PMSM) sensorless application but you can also use it for the BLDC sensorless

application. You can also adapt the application to other motors by defining and changing the motor-

related parameters. The motor is connected directly to the high-voltage development board via a flexible

cable connected to the 3-wire development board connector.

Table 3. MIGE 60CST-MO1330 motor parameters

Characteristic Symbol Value Units

Rated voltage

220

Rated speed @ Vt

—

3000

RPM

Rated power

400

Number of pole pairs

—

Hardware setup

BLDC Control Demo User's Guide, Rev. 6, 06/2020

4 NXP Semiconductors

Figure 2. MIGE motor

4.3. Tower System

To run the BLDC application using the Tower System, these Tower boards are required:

•Tower board with a Kinetis V series MCU (TWR-KV46F150M or TWR-KV58F220M).

•Tower board with Kinetis E series MCU (TWR-KE18F).

•3-Phase Low-Voltage Motor Control module (see TWR-MC-LV3PH) including the Linix

motor.

•Tower System elevator modules (see TWR-ELEV).

Hardware setup

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NXP Semiconductors 5

4.3.1. TWR-MC-LV3PH module

The 3-Phase Low-Voltage Motor Control module (TWR-MC-LV3PH) is a peripheral Tower System

module, interchangeable across the Tower System. The phase voltage and current feedback signals are

provided. These signals enable a variety of algorithms to control the 3-phase PMSM and BLDC motors.

A high level of board protection (over-current, under-voltage, over-temperature) is provided by the

MC33937 pre-driver. Before you insert the TWR-MC-LV3PH module into the Tower System, ensure

that the jumpers on your TWR-MC-LV3PH module are configured as follows:

Table 4. TWR-MC-LV3PH jumper settings

Jumper Setting Function

1-2

Selects the internal analog power supply.

1-2

Selects the internal analog power reference (GND).

J10

2-3

Selects BEMF_SENSE_C.

J11

2-3

Selects BEMF_SENSE_B.

J12

2-3

Selects BEMF_SENSE_A.

J13

2-3

Selects I_SENSE_DCB.

J14

2-3

Selects V_SENSE_DCB_HALF.

Figure 3. TWR-LV-MC3PH jumper settings

Hardware setup

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6 NXP Semiconductors

4.3.2. TWR-KV46F150M MCU module

Configure the jumpers on the TWR-KV46F150 and TWR-MC-LV3PH modules properly. Table 7 lists

the relevant jumpers and their settings for the TWR-KV46F150 MCU module:

Table 5. TWR-KV46F jumper settings

Jumper Setting Jumper Setting Jumper Setting

open

J16

open

J505

3-4

open

J19

open

J506

3-4

2-3

J20

1-2

J512

1-2

J21

open

J514

2-3

J13

1-2, 3-4

J23

open

J517

2-3

J15 1-2 — —

J519

J520

J521

J522

3-4

1-2

Figure 4. TWR-KV46F150M MCU module

Hardware setup

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NXP Semiconductors 7

4.3.3. TWR-KV58F Tower System module

The TWR-KV58F220M is a development module for the Kinetis KV5x family of MCUs built around

the Arm®Cortex®-M7 core. This MCU has enough power for use in multi-motor control applications

(such as the PMSM or BLDC motors with simple or advanced control techniques). The MCU has a wide

range of motor-control peripherals, lots of memory (depending on the model used), and a powerful core.

To begin, configure the jumpers on the TWR-KV58F220M and TWR-MC-LV3PH Tower System

modules properly. Table 8 lists the specific jumpers and their settings for the TWR-KV58F220M Tower

System module:

Table 6. TWR-KV58F jumper settings

Jumper Setting Jumper Setting Jumper Setting

1-2

J11

1-2

J23

2-3

open

J12

1-2

J24

2-3

1-2

J14

open

J25

2-3

1-2

J17

open

J26

2-3

1-2

J18

open

J28

1-2

J19

open

J29

open

J20

open

J30

1-2, 3-4, 5-6, 7-8

J10

1-2

J21

1-2

—

Figure 5. TWR-KV58F Tower System module

Hardware setup

BLDC Control Demo User's Guide, Rev. 6, 06/2020

8 NXP Semiconductors

4.3.4. TWR-KE18F Tower System module

The TWR-KE18F is a development tool for the NXP Kinetis KE1x family of MCUs built around the

Arm Cortex-M4 core. This MCU has enough power for use in motor-control applications (such as

PMSM or BLDC motors with simple or advanced control techniques). The MCU has a wide range of

peripherals, lots of memory (depending on the model used), and a powerful core.

To begin, configure the jumpers on the TWR-KE18F and TWR-MC-LV3PH Tower System modules

properly. Table 9 lists the specific jumpers and their settings for the TWR-KE18F Tower System

module.

Table 7. TWR-KE18F jumper settings

Jumper Setting Jumper Setting Jumper Setting

2-3

1-2

J18

1-2

J11

1-2

J19

1-2

2-3

J12

1-2

J21

open

1-2

J13

1-2

J22

1-2

J16

1-2

J23

Open

open

J17

1-2

J24

1-2

Figure 6. TWR-KE18F Tower System module

4.4. Tower System assembly

1. Insert the TWR-KVxxXxx MCU module and the TWR-MC-LV3PH module into the

TWR-ELEV card slots. Ensure that the primary sides of the modules (marked by white stripes)

are inserted into the primary elevator card (marked by white connectors).

2. After assembling the Tower System, connect the required cables as follows:

Hardware setup

BLDC Control Demo User's Guide, Rev. 6, 06/2020

NXP Semiconductors 9

•Connect the power input cable (3-wire connector) of the Linix motor to its corresponding

connector (J5) on the TWR-MC-LV3PH motor control driver board.

•Plug in the power supply cable that is attached to the TWR-MC-LV3PH system kit to the

motor control peripheral board TWR-MC-LV3PH.

•Connect the TWR MCU module to the host PC via a USB cable.

Figure 7. Assembled Tower System

4.5. Freedom development platform

To run the BLDC application using Freedom, you need these Freedom boards:

•Kinetis KV11Z Freedom board (see FRDM-KV11Z), Kinetis KV31F Freedom board

(see FRDM-KV31F), Kinetis KE15Z, or Kinetis KE16Z Freedom board.

•3-Phase Low-Voltage Power Freedom shield (see FRDM-MC-LVBLDC) including the

Linix motor.

Hardware setup

BLDC Control Demo User's Guide, Rev. 6, 06/2020

10 NXP Semiconductors

4.5.1. FRDM-MC-LVBLDC low-voltage evaluation board

The FRDM-MC-LVBLDC low-voltage evaluation board (in a shield form factor) effectively turns the

Freedom development platform into a complete motor-control reference design compatible with the

existing Freedom development platforms (FRDM-KV31F, FRDM-KV11Z, FRDM-KE15Z, and

FRDM-KE16Z).

The FRDM-MC-LVBLDC board does not require any hardware configuration or jumper settings.

It contains no jumpers.

Figure 8. FRDM-MC-LVBLDC

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