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基于A0-VS122PA690M7-L750F70、RZ/T1主控器件的80kW变频器解决方案
212
拍明
概述
80kW变频器是将交流380V电通过三相整流成直流，再通过逆变电路输出需要的交流电，从而带动大功率电机运行。在实际应用中，如果要保证80kW变频器长时间地正常工作，核心在于保证内部功率转换单元正常平稳运行。本方案的功率转换单元，搭配高性能电机控制MCU和驱动方案，可以降低整机的损耗，实现80kW变频器的高效运行。
优势
· 1200V/690A的半桥功率模块(A0-VS122PA690M7-L750F70)，行业标准封装—62x152 [毫米^2]，Pin to pin替换ECONODUAL封装，价格更低;集成三菱M7晶圆，更高效，和IGBT4晶圆比，效率可以提高10%。
【A0-VS122PA690M7-L750F70】
Features
● Low VCEsat with the new 7th gen Mitsubishichip generation
● Max. Junction temperature Tvjmax 175 °C
● Solid cover technology for higher reliability
● Industry standard housing
● Press-fit pin and pre-applied Phase Change Thermal Interface Material available
Target applications
● Industrial Drives
● Power Supply
● UPS
Target applications
● A0-VS122PA690M7-L750F70
● A0-VP122PA690M7-L750F70T
· 内置以太网MAC、EtherCAT的32位MCU(RZ/T1)，集成度高，可以降低50%的PCB布线面积;集算法控制和网络通信于一身，有利于电机调速性能改进。
【RZ/T1】
Realize Real-Time Control of Industrial Equipment and Networking at the Same Time
The RZ/T1 Group has the Arm® Cortex®-R4 Processor with FPU core, which was designed for real-time processing, and is capable of high-speed operation at up to 600 MHz. Furthermore, access does not need to be performed via cache memory, and tightly-coupled memory capable of definitive real-time response processing is built-in, enabling high-speed access from the CPU without passing through the cache memory.
RZ/T1 devices that are equipped with a built-in R-IN engine, an accelerator for industrial Ethernet communications, can perform industrial Ethernet processing without loss of real-time performance by Hardware RTOS (HW-RTOS)
RZ/T1 devices that are equipped with a configurable absolute encoder interface are perfectly suited for precision motion control applications. The range of industry standards that are supported by the configurable encoder interface includes EnDat2.2, BiSS®-C, A-format™, Tamagawa and HIPERFACE® DSL.
Key Features : RZ/T1(with R-IN engine)
| ITEM | RZ/T1(with R-IN engine) | |||
|---|---|---|---|---|
| Part NAME | R7S910015 | R7S910016 | R7S910017 | R7S910018 |
| Packages | 320FPBGA | |||
| 0.8mm pitch | ||||
| 17mm x 17mm | ||||
| Main CPU | Arm®Cortex®-R4 Processor with FPU | |||
| Maximum operating frequency | 450MHz | 600MHz | ||
| FPU | Supports single-precision and double-precision addition, subtraction, multiplication, division, multiply-accumulation, and square root calculation | |||
| Tightly-coupled memory | ATCM: 512 KB (with ECC); BTCM: 32 KB (with ECC) | |||
| Cache memory | Instruction cache: 8 KB (with ECC); data cache: 8 KB (with ECC) | |||
| Communication accelerator | R-IN engine multi-protocol communication accelerator | |||
| Expanded internal SRAM | 1 MB (with ECC) *also used for storing protocol stack | |||
| Clocks | External clock/resonator input frequency: 25 MHz | |||
| CPU clock frequency: up to 450/600 MHz | ||||
| Low-speed on-chip oscillator (LOCO): 240 kHz | ||||
| Timers | Up to 33 expanded timer functions | |||
| 16-bit TPUa (12 channels), MTU3a (9 channels), GPTa (4 channels): input capture, output compare, PWM waveform output | ||||
| 16-bit CMT (6 channels), 32-bit CMTW (2 channels) | ||||
| Communications | EtherMAC: 1 port (with switching) | |||
| EtherCAT slave controller | ||||
| USB 2.0 high-speed host/function: 1 channel | ||||
| CAN (ISO 11898-1 compliant): up to 2 channels | ||||
| 16-byte SCIFA with FIFO: 5 channels | ||||
| I2C bus interface: 2 channels of up to 400 kbps transfer speed | ||||
| RSPIa: 4 channels | ||||
| SPIBSC: 1 channel of multi-I/O serial flash memory connectable | ||||
| Memory interfaces | SPI 4ch | |||
| QSPI(Flash I/F) with Direct Access from CPU | ||||
| SRAM I/F(32bit bus) | ||||
| SDRAM I/F(32bit bus) | ||||
| Burst ROM I/F(32bit bus) | ||||
| Encoder interfaces | - | A-format™, BiSS®-C, EnDat2.2, HIPERFACE®DSL, Tamagawa | - | A-format™, BiSS®-C, EnDat2.2, HIPERFACE®DSL, Tamagawa |
| A/D converter | 12-bit A/D converter: 2 units (unit 0: 8 channels; unit 1: 16 channels) | |||
| DMA | 16 channels x 2 units | |||
| Other functions | Built-in temperature sensor for measuring internal chip temperature | |||
| Safety features (register write protection, input clock oscillation stop detection, CRC, IWDTa, A/D self-diagnostics, error control module, etc.) | ||||
| Security functions (option): Secure boot, JTAG lock, etc. | ||||
| Power supply voltage | 3.3 V (I/O), 1.2 V (internal) | |||
| Operating temperature range | Tj = -40℃ ～ +125℃ | |||
Pin Count / Memory Size:
SRAM
| 1568KB | ● | |
|---|---|---|
| 544KB | ● | ● |
Pins | 176 | 320 |
Block Diagram:
with R-IN engine
without R-IN engine
*Arm and Cortex are registered trademarks of Arm Limited (or its subsidiaries) in the EU and/or elsewhere.
All rights reserved.
*EtherCAT is a patented technology that Renesas has licensed from Beckhoff Automation GmbH, and is a registered trademark.
*EtherNet/IP is a trademark of ODVA.
*BiSS is a registered trademark of iC-Haus.
*CAN(Controller Area Network)：An automotive network specification developed by Robert Bosch GmbH of Germany.
*All other names of products or services mentioned here are trademarks or registered trademarks of their respective owners.
* A-format is a trademark of the Nikon Corporation.
*HIPERFACE DSL is registered trademark of SICK STEGMANN GmbH.
*EnDat is registered trademark of DR. JOHANNES HEIDENHAIN GmbH.
· 高性价比驱动光耦(PS9031-Y-V-F3-AX)，2.5A驱动电流，50 kV/s MIN高共模抑制比，能大大增强变频器的抗干扰能力，世强常备库存，价格比竞争对手便宜，降低成本。
【PS9031-Y-V-F3-AX】
PS9031
2.5 A OUTPUT CURRENT, HIGH CMR, IGBT GATE DRIVE, 5-PIN SOP (LSO5 WITH 8mm CREEPAGE DISTANCE) PHOTOCOUPLER
DESCRIPTION
The PS9031 is an optically coupled isolator containing a GaAlAs LED on the input side and a photodiode, a signal
processing circuit and power MOSFETs on the output side on one chip.
FEATURES
> Long creepage distance (8 mm MIN.)
> Large peak output current (2.5 A MAX., 2.0 A MIN.)
> High speed switching (tPLH tPHL = 175 ns MAX.)
> UVLO (Under Voltage Lock Out) protection with hysteresis
> High common mode transient immunity (CMH, CML = 50 kV/s MIN.)
> Operating Ambient Temperature (125 C MAX.)
> Embossed tape product : PS9031-F3 : 3000 pcs/reel
> Pb-Free product
> Safety standards
> UL approved: UL1577, Double protection
> CSA approved: CA5A, CAN/CSA-C22.2 No.60065, CAN/CSA-C22.2 No.60950-1, Reinforced insulation
> VDE approved: DIN EN 60747-5-5 (Option)
APPLICATIONS
> IGBT, Power MOS FET Gate Driver
> Industrial inverter
> AC Servo
· 高性价比驱动光耦(PS9402-V-E3-AX)，2.5A驱动电流，带 Miller钳位和 Desat检测保护功能，大客户量产使用，世强常备库存，价格比竞争对手便宜
【PS9402-V-E3-AX】
PS9402
2.5 A OUTPUT CURRENT, HIGH CMR, IGBT, POWER MOS FET GATE DRIVE, 16-PIN SSOP PHOTOCOUPLER
DESCRIPTION
The PS9402 is an optically coupled isolator containing a GaAlAs LED on the input side and a photo diode, a signalprocessing circuit and a power output transistor on the output side on one chip.
The PS9402 is designed specifically for high common mode transient immunity (CMR), high output current and highswitching speed.
The PS9402 includes desaturation detection and active miller clamping functions.
The PS9402 is suitable for driving IGBTs and Power MOS FETs.
The PS9402 is in a 16-pin plastic SSOP (Shrink Small Outline Package). And the PS9402 is able to high-density(surface) mounting.
FEATURES
• Long creepage distance (8 mm MIN.)
• Large peak output current (2.5 A MAX., 2.0 A MIN.)
• High speed switching (tPLH, tPHL = 200 ns MAX.)
• UVLO (Under Voltage Lock Out) protection with hysteresis
• Desaturation detection
• Miller clamping
• High common mode transient immunity (CMH, CML = ±25 kV/μs MIN.)
• Embossed tape product: PS9402-E3: 850 pcs/reel
• Pb-Free product
• Safety standards
• UL awaiting approval
• CSA awaiting approval
• DIN EN60747-5-2 (VDE0884 Part2) awaiting approval
APPLICATIONS
• IGBT, Power MOS FET Gate Driver
• Industrial inverter
• Uninterruptible Power Supply (UPS)
【变频器】
变频器(Variable-frequency Drive，VFD)是应用变频技术与微电子技术，通过改变电机工作电源频率方式来控制交流电动机的电力控制设备。
变频器主要由整流(交流变直流)、滤波、逆变(直流变交流)、制动单元、驱动单元、检测单元微处理单元等组成。变频器靠内部IGBT的开断来调整输出电源的电压和频率，根据电机的实际需要来提供其所需要的电源电压，进而达到节能、调速的目的，另外，变频器还有很多的保护功能，如过流、过压、过载保护等等。随着工业自动化程度的不断提高，变频器也得到了非常广泛的应用。
变频节能
变频器节能主要表现在风机、水泵的应用上。为了保证生产的可靠性，各种生产机械在设计配用动力驱动时，都留有一定的富余量。当电机不能在满负荷下运行时，除达到动力驱动要求外，多余的力矩增加了有功功率的消耗，造成电能的浪费。风机、泵类等设备传统的调速方法是通过调节入口或出口的挡板、阀门开度来调节给风量和给水量，其输入功率大，且大量的能源消耗在挡板、阀门的截流过程中。当使用变频调速时，如果流量要求减小，通过降低泵或风机的转速即可满足要求。
电动机使用变频器的作用就是为了调速，并降低启动电流。为了产生可变的电压和频率，该设备首先要把电源的交流电变换为直流电(DC)，这个过程叫整流。把直流电(DC)变换为交流电(AC)的装置，其科学术语为“inverter”(逆变器)。一般逆变器是把直流电源逆变为一定的固定频率和一定电压的逆变电源。对于逆变为频率可调、电压可调的逆变器我们称为变频器。变频器输出的波形是模拟正弦波，主要是用在三相异步电动机调速用，又叫变频调速器。对于主要用在仪器仪表的检测设备中的波形要求较高的可变频率逆变器，要对波形进行整理，可以输出标准的正弦波，叫变频电源。一般变频电源是变频器价格的15--20倍。由于变频器设备中产生变化的电压或频率的主要装置叫“inverter”，故该产品本身就被命名为“inverter”，即：变频器。
变频不是到处可以省电，有不少场合用变频并不一定能省电。 作为电子电路，变频器本身也要耗电(约额定功率的3-5%)。一台1.5匹的空调自身耗电算下来也有20-30W,相当于一盏长明灯. 变频器在工频下运行，具有节电功能，是事实。但是他的前提条件是：
第一、大功率并且为风机/泵类负载;
第二、装置本身具有节电功能(软件支持);
这是体现节电效果的三个条件。除此之外，无所谓节不节电，没有什么意义。如果不加前提条件的说变频器工频运行节能，就是夸大或是商业炒作。知道了原委，你会巧妙的利用他为你服务。一定要注意使用场合和使用条件才好正确应用，否则就是盲从、轻信而“受骗上当”。
功率因数补偿节能
无功功率不但增加线损和设备的发热，更主要的是功率因数的降低导致电网有功功率的降低，大量的无功电能消耗在线路当中，设备使用效率低下，浪费严重，使用变频调速装置后，由于变频器内部滤波电容的作用，从而减少了无功损耗，增加了电网的有功功率。
软启动节能
1：电机硬启动对电网造成严重的冲击，而且还会对电网容量要求过高，启动时产生的大电流和震动时对挡板和阀门的损害极大，对设备、管路的使用寿命极为不利。而使用变频节能装置后，利用变频器的软启动功能将使启动电流从零开始，最大值也不超过额定电流，减轻了对电网的冲击和对供电容量的要求，延长了设备和阀门的使用寿命。节省了设备的维护费用。
2：从理论上讲，变频器可以用在所有带有电动机的机械设备中，电动机在启动时，电流会比额定高5-6倍的，不但会影响电机的使用寿命而且消耗较多的电量.系统在设计时在电机选型上会留有一定的余量，电机的速度是固定不变，但在实际使用过程中，有时要以较低或者较高的速度运行，因此进行变频改造是非常有必要的。变频器可实现电机软启动、补偿功率因素
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