</a>三相逆變器" title="三相逆變器">三相逆變器" title="三相逆變器">三相逆變器評估板,和基于8/32位MCU的控制邏輯一起,能進行控制永磁馬如六步模式或梯形的標量控制以及磁場定向控制(FOC).最低輸入電壓12VDC,最大輸入電壓24VDC,馬達最大功率120W,輸入反向極性電路保護,目標應用在以電池為能源的高端工具,醫療設備,自治移動器等.本文介紹了STEVAL-IHM031V1演示板主要特性,框圖,電路圖和材料清單.

The STEVAL-IHM031V1 demonstration board is a low voltage three-phase power stage inverter designed to perform permanent magnet motor controls. To this purpose, it must be connected to an additional control logic stage (usually based on an 8/32-bit microcontroller).

According to the existing wide range of motor types and control techniques, it has been designed to offer large flexibility by allowing full configurability.

In particular, it can be used for implementing scalar control (also known as current six-step mode or trapezoidal shaped back-EMF) and field oriented control (sinusoidal-shaped back-EMF PMSM).

The system has been specifically designed to achieve accurate and fast conditioning of the current and back-EMF feedbacks, thereby matching the requirements typical of high-end applications such as field oriented motor control. Back-EMF conditioning networks can include an amplification stage for managing very low motor speed. Circuit networks are provided to implement different techniques of sensorless speed and rotor position detection.

The input voltage range is from 12 V up to 24 V with no need to set any jumper for selecting the input voltage level. Nominal power is up to 120 W. A dedicated power supply has been designed to provide power +5 V and +3.3 V voltages to supply the control stage board. The latter can be connected to the STEVAL-IHM031V1 board by using a dedicated motor control connector, generally available in most boards based on microcontrollers produced by ST.

The three-phase inverter bridge is based on the STS8DNH3LL power MOSFET dual-in package SO-8 and L6387E gate driver. The board is self-protected by overcurrent events and for each power MOSFET the case temperature is sensed through a temperature sensor. A connector exists to read signals coming from encoder and Hall sensors.

圖1.STEVAL-IHM031V1演示板外形圖

STEVAL-IHM031V1演示板主要特性:

The information below lists the converter specification data and the main parameters fixed for the STEVAL-IHM0031V1 demonstration board.

● Minimum input voltage: 12 VDC

● Maximum input voltage: 24 VDC

● Maximum output power for motor up to 120 W

● Circuit protection against input reverse polarity

● 5 VDC auxiliary power supply based on the LD1117xx50

● 3.3 VDC auxiliary power supply based on the LD1117xx33

● 8 VDC auxiliary power supply based on the L4976

● Power MOSFET STS8DNH3LL dual N-channel in SO-8 package

● Motor control connector for interface with STM32 and STM8 microcontroller family demonstration boards

● Hall/encoder inputs

● Fully configurable to implement both scalar and field oriented motor control driving Strategies

STEVAL-IHM031V1演示板目標應用:

● Battery powered high-end tools

● Medical applications

● Autonomous mover

● Super silent and high-efficiency water pump for cooling/heating applications

圖1. STEVAL-IHM031V1演示板框圖

圖2.Bemf_hall_編碼器電路圖

圖3.調理調理網絡電路圖

圖4.驅動器和功率MOSFET電路圖

圖5.馬達控制連接器電路圖

圖6.電源電路圖

STEVAL-IHM031V1演示板材料清單:








詳情請見:
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/USER_MANUAL/CD00278303.pdf