STSTEVAL－IHM031V1低压三相逆变器评估方案

ST公司的STEVAL-IHM031V1是低压三相逆变器评估板,和基于8/32位MCU的控制逻辑一起,能进行控制永磁马如六步模式或梯形的标量控制以及磁场定向控制(FOC).最低输入电压12VDC,最大输入电压24VDC,马达最大功率120W,输入反向极性电路保护,目标应用在以电池为能源的高端工具,医疗设备,自治移动器等.本文介绍了STEVAL-IHM031V1演示板主要特性,框图,电路图和材料清单.

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.

图1.STEVAL-IHM031V1演示板外形图

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演示板目标应用:

● Battery powered high-end tools

● Medical applications

● Autonomous mover

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

图1. STEVAL-IHM031V1演示板框图

图2.Bemf_hall_编码器电路图

图3.调理调理网络电路图

图4.驱动器和功率MOSFET电路图

图5.马达控制连接器电路图

图6.电源电路图

STEVAL-IHM031V1演示板材料清单:








详情请见:
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/USER_MANUAL/CD00278303.pdf