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[原创] TI TIDA-0145三相变频马达驱动参考设计

关键词:工业控制 马达控制 逆变器 TIDA-0145

时间:2018-01-10 11:03:14       作者:TI       来源:中电网

TI公司的TIDA-0145是紧凑的非隔离三相逆变器参考设计,设计由C2000™ MCU控制,栅极驱动器UCC5320S.驱动电压200到480-V AC,连续电流10Arms,用于变频AC逆变器驱动和伺服驱动.本文介绍了通用马达控制框图,参考设计TIDA-0145主要特性和系统指标,框图,电路图,材料清单和PCB设计图.

This reference design realizes a three-phase invertersubsystem for variable frequency AC inverter drivesand servo drives. This design is particularly suited fordrive architectures in which the microcontroller groundand the inverter ground are non-isolated. Basicisolated gate driver UCC5320S is used for driving thehigh-side inverter switches, and the small and compactsix-pin UCC27531 low-side gate driver is used fordriving the bottom switches. The reinforced isolation ismoved to the UART communication channel.Currentsensing in the inverter half-bridge leg is done in twophases using shunt resistors and the dual operationalamplifier TLV9062. This drive architecture results inreduced number of reinforced isolated channels andenables a cost optimized compact solution. The designis controlled by a C2000™ microcontroller.

Three-phase inverter power stages are the fundamental building blocks in industrial motor driveapplications like pumps, compressors, robotics, machine tools, and CNC machines. The inverter convertsa DC voltage into a variable frequency and power AC output to drive the motor.

The generic motor control blocks are shown in Figure 3. The inner most control loop controls the torqueapplied by the motor. The torque applied by the motor is directly proportional to the motor current. Thecurrent can be sensed either in the motor phase, the inverter half-bridge legs, or in the DC link. Each ofthese available methods have pros and cons, and a specific sensing technology is selected depending onthe drive architecture and control performance required. The sensed current is then controlled to the loopcurrent set point by varying the inverter duty cycle applied to the motor. The current loop exists inside thespeed loop. The speed of the motor can be detected with sensors like the resolver and encoder, which aremounted on the motor shaft or the speed can also be calculated without sensors. The choice of speeddetection is again dependent on drive performance and architecture. The speed loop provides the currentsetpoint to the current control loop. The setpoint is a function of the error between the actual speed andthe required speed. The speed loop exists inside a position control loop. The position control loop providesa speed setpoint, which is a function of the actual position and the required position. The required positionsetpoint can come from further external control loops, human machine interface, or from a motion controlprofiler.

参考设计TIDA-0145主要特性:

• Three-Phase Inverter Power Stage Suited for 200-to 480-V AC Powered Drives With ContinuousCurrent Rating up to 10 ARMS
• Compact, Cost-Optimized Solution Due to:
– Movement of Reinforced Isolation From PowerStage to Interprocessor Communication Channel Resulting in Reduction of Number ofReinforced Isolated Devices From 9 to 1
– Use of Small Low-Side Gate Drivers (SOT23:
2.9 mm × 1.6 mm) and Basic Isolated High-SideGate Drivers (SOIC8: 4 mm × 5 mm)
– Single (15 V) Power Supply Rail Powering AllGate Drivers Through Bootstrap Technique
– High-Side Gate Drivers With Basic Isolation inPower Stages Minimizes Creepage Distances
• Low Propagation Delay (< 75 ns) of Gate DriversEnable Decreasing Dead Time, Which ImprovesInverter Efficiency and Reduces Distortions
• Robust Solution Due to Gate Drivers WithEnhanced Immunity Against Miller dV/dtTurnonEvents, Negative Input Voltage Handling andUVLO
• Low-Side Shunt-Based Current Sensing for TwoInverter Legs Using Dual Operational Amplifiers
• Reinforced Isolated JTAG for Controller Debug andUART for Communication
• Provision for IGBT Module TemperatureMeasurement Using NTC Integrated Inside Module
参考设计TIDA-0145应用:
• AC Inverter and VF Drives
• Servo CNC and Robotics

图1.参考设计TIDA-0145外形图

图2.参考设计TIDA-0145和驱动马达外形图

图3.通用马达控制框图

图4.热边和冷边马达控制架构图
参考设计TIDA-0145主要系统指标:


图5.参考设计TIDA-0145框图

图6.参考设计TIDA-0145电路图(1)

图7.参考设计TIDA-0145电路图(2)

图8.参考设计TIDA-0145电路图(3)

图9.参考设计TIDA-0145电路图(4)
参考设计TIDA-0145材料清单:



图10.参考设计TIDA-0145 PCB设计图(1)

图11.参考设计TIDA-0145 PCB设计图(2)

图12.参考设计TIDA-0145 PCB设计图(3)

图13.参考设计TIDA-0145 PCB设计图(4)

图14.参考设计TIDA-0145 PCB设计图(5)

图15.参考设计TIDA-0145 PCB设计图(6)

图16.参考设计TIDA-0145 PCB设计图(7)

图17.参考设计TIDA-0145 PCB设计图(8)

图18.参考设计TIDA-0145 PCB设计图(9)

图19.参考设计TIDA-0145 PCB设计图(10)
详情请见:
http://www.ti.com/lit/ug/tidudg8/tidudg8.pdf
http://www.ti.com/lit/df/tidrt40/tidrt40.pdf
以及http://www.ti.com/lit/df/tidrt41/tidrt41.pdf
http://www.ti.com/lit/df/tidrt43/tidrt43.pdf
tidudg8.pdf
tidrt40.pdf
tidrt41.pdf
tidrt43.pdf

 

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