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Solar PV Energy Systems

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Title: Solar PV Energy Systems


1
Solar PVEnergy Systems
2
Agenda
  • Solar PV Market and Applications
  • Solar PV market
  • Typical Solar PV System
  • Central or String Inverter
  • Micro-Inverter
  • Main Challenges System Considerations
  • ADI Signal Chain in Solar PV System
  • ADI Main Products
  • Isolation Technology
  • isoPower
  • Gate Drive
  • Interface
  • Current Sensing
  • Multi-channel ADC
  • Power Management
  • Metering
  • ADI Processor and Reference design

3
Solar PV Market
  • High-End (Traditional)
  • Grid-Tied, Utility Scale
  • gt100KW Systems
  • Electronics Content Centralized
  • Market Size 20K/yr (20 Growth)
  • Mid-Range (Community Scale)
  • Grid-Tied
  • 110 kW Power Output per Solar Farm
  • Market Size gt500K/ yr Globally
  • Low End (Distributed Electronics)
  • Grid-Tied or Offline
  • 100 W 300 W per Module
  • Market Size 1 5 Million MicroInverters
  • Electronics ? Distributed (each Panel)
  • Highly Integrated

4
Typical Central or String Inverter
5
Typical String Inverter Approach
Typically 2-20kW
Solar5d
6
Typical DC/DC Section of Multi-String Central
inverter
Solar1g
7
Typical DC/AC Section of Multi-String Central
Inverter
Solar1h
8
Micro-Inverters
9
Implication of Micro-Inverter Architectures
  • Dramatic Increase in Electronics Content
  • Per Panel Sensing Control now required
  • Processor Required for each Panel
  • Communications required between Panel and Central
    Unit
  • PLC, RF, CAN
  • Significant Pressure on System Cost
  • Requires Highly Optimized System Solution
  • Integrated Processor with ADCs, DSP, PWM
    Controller
  • Harsher Environment for Components
  • Components need to be reliable for 25 years
  • Components are exposed to extreme Temperatures

10
Micro-Inverter System with AC Output
Typically 200W to 300W
Solar6c
11
Typical Micro-inverter Architecture
Solar1j
12
Various Standards at Play
  • IEC61727 Characteristics of the Utility
    Interface
  • IEC62109 Safety of Static Inverters
  • Comparable to UL1741
  • IEC62116 Anti-islanding test procedures
  • VDE 0126 Most important German safety standard
  • Recently revised version now demands a Residual
    Current Monitoring Unit (RCMU) for
    transformer-less inverter designs
  • This RCMU must be capable of measuring any ac or
    dc residual current flow
  • Standard CTs cannot measure dc current so
    alternative current sensing techniques are
    required

13
Main Challenges System Considerations
  • Higher reliability and lower assembly/manufacturin
    g costs
  • Relatively harsh environment with temperatures of
    up to 125
  • Power conversion efficiency is critical and need
    components consume as little power as possible
  • Keeping the generated harmonics below the
    regulatory levels
  • Maintain low dc injection current levels onto the
    grid

14
Why Choose ADI?
  • ADIs expertise in integrated energy
    measurement300 million ADI metrology-based
    meters deployed
  • 50 of all electrical grid equipment worldwide
    uses ADI converters
  • Precision measurement of current voltage
    through highly accurate converters and amplifiers
  • Enabling power networks using high performance
    processing technology engineered with robustness
    and reliability
  • Mixed-signal conversion and processing enable
    ease of design and reduced time to market

15
ADI Signal Chain for Solar PV application
Current Sensing Signal Condition Isolated ADC ADC Isolation Gate Driver Interface Processor Energy Meter Power Management
AD628, AD629, AD8210, AD8212, AD8217, AD8218 ADA4091-2, OPx177, AD8622, AD8624, AD8275 AD7400A, AD7401A, AD7266, AD7606, AD7607, AD7606-6, AD7656-1 ADuM121x, ADuM131x, ADuM141x, ADuM5000, ADuM520x, ADuM540x, ADuM7234, ADuM5230, ADuM6132 ADM3485E, ADM2582/7E, ADM3251E, ADM3052/3E ADSP-BF50x, ADSP-BF51x, ADuC702x ADE7953, ADE7878, ADE8155, ADE8156 ADP211x, ADP230x, ADP1710, ADP125
16
ADI Signal Chain for Solar PV application
Current Sensing Signal Condition Isolated ADC ADC Isolation Gate Driver Interface Processor Energy Meter Power Management
AD628, AD629, AD8210, AD8212, AD8217, AD8218 ADA4091-2, OPx177, AD8622, AD8624, AD8275 AD7400A, AD7401A, AD7266, AD7606, AD7607, AD7606-6, AD7656-1 ADuM121x, ADuM131x, ADuM141x, ADuM5000, ADuM520x, ADuM540x, ADuM7234, ADuM5230, ADuM6132 ADM3485E, ADM2582/7E, ADM3251E, ADM3052/3E ADSP-BF50x, ADSP-BF51x, ADuC702x ADE7953, ADE7878, ADE8155, ADE8156 ADP211x, ADP230x, ADP1710, ADP125
17
ADI main Products in Solar PV application
-- Isolation Technology -- isoPower
-- Gate Drive -- Interface --
Current and Voltage Sensing --
Multi-channel ADC -- Power Management
-- Metering
18
iCoupler Chip-Scale Transformer Isolation
  • Integration
  • Performance
  • Power Consumption
  • Ease-of-Use
  • Reliability
  • Magnetic Rather ThanOptical Transmission
  • High-Fidelity Signal Transfer
  • 10 Power Consumption
  • No Wearout and Low Variation Over Time and
    Temperature
  • Robust Isolation and High Common Mode Transient
    Immunity

19
iCoupler Operational Diagram

20
iCoupler Integrated Solutions
  • Isolated Data Channels
  • 1-5 channels
  • Options for speed, temp, and robustness
  • isoPower
  • Isolated DC/DC power and data in 1 package
  • Up to 500mW isolated power
  • Communications Standards
  • I2C bidirectional channels
  • RS-485 and RS-232
  • Gate Drivers
  • Full and half bridge drivers
  • Gate drivers with isoPower
  • Isolated ?? ADCs
  • 16 Bit
  • 10 18 MSPS

21
Logic Isolators
decreasing price/channel
decreasing price/channel
Reduced size isolators
  • Model Options/Features
  • Data Rates 1 150 Mbps
  • Propagation Delay 18 100 ns
  • Default Output Low, High, Programmable
  • Supply Voltages 2.7 5.5V
  • Operating Temperatures 105C, 125C

22
isoPower Overview
Example ADuM542x 1st Generation isoPower
  • iCoupler micro-transformers are the basis for
    DC/DC conversion
  • 20µm polyimide isolation
  • Withstands up to 5 kV rms
  • 800µm diameter, Au coils
  • All DC/DC converter elements integrated within
    package
  • Regulator
  • Transformer Driver
  • Switches
  • Unique Capability
  • Competing technologies cannot integrate isolated
    power

Power Coil
Data Coils
23
isoPower Logic Isolators
8-lead SOIC (6 x 5 mm)
16-lead wide body SOIC (10 x 10 mm)
24
Isolated Gate Drivers
15V/20 mA
DC/DC
15V/200 mAPK
25
ADuM3223 2.5kV Isolated Precision Half-Bridge
Driver, 4A Output
  • KEY FEATURES
  • Isolated working voltages
  • High-side or low-side relative to input
    560VDCPEAK
  • High-side or low-side differential 700VDCPEAK
  • High frequency operation 1MHz maximum
  • 3.3V to 5V input logic
  • Default low output
  • 16-lead narrow SOIC package
  • High temperature operation 125C
  • KEY APPLICATIONS
  • Switching power supplies
  • Isolated IGBT/MOSFET gate drives
  • Industrial inverters

Key Benefit
4A peak output current

Samples
Q32011
Release
Q42011
Price _at_ 1k
1.90
Temp
-40C 125C
26
Communication Options in Use
  • Wired
  • In the Micro-inverter market a popular choice is
    Power Line Communication (PLC)
  • For Central Inverters and DC Combiner/Optimiser
    markets, more popular option is RS-485 for comms
    up to 1Km
  • Within an inverter box, CAN is popular
  • Wireless
  • Popular in Micro-inverter market
  • Zigbee, Bluetooth and proprietary protocols are
    all in use

27
RS-485 Isolation Integration Roadmap
Int. Signal Isolation ADM2483/ 84E/ 86 ADM2490E/
91E
ADM2582E/ ADM2587E Int. Signal Power
Isolation
Std Transceivers
ADM2485 ADM2482E/ 87E Int. Signal Isolation Int
Traffo Driver
28
ADM2490E/91E/84E - 5kVrms iCoupler Signal
Isolated RS-485/RS-422 Transceiver
ADM2490E
  • KEY BENEFITS
  • iCoupler Signal Isolated RS-485/RS-422
    transceiver
  • Configurable as half or full duplex (ADM2490E
    Full duplex only)
  • 8 kV/ 15 kV(ADM2484E only) ESD protection
  • RS485 input/output pins
  • Data rate 16 Mbps/ 500kbps
  • 5 V or 3V operation
  • 32 nodes on bus (256 on ADM2484E)
  • Open-circuit fail-safe
  • True fail-safe (2484E only)
  • High common-mode transient immunity gt25 kV/µs
  • Safety and regulatory approvals (targeted)
  • UL recognition 5000 VRMS for 1 minute per UL
    1577
  • VDE Certificates of Conformity
  • DIN V VDE V 0884-10 (VDE V 0884-10) 2006-12
    ADM2491E ADM2484E
  • VIORM 848 V peak

ADM2491E/84E
Released
29
ADM2582ESignal and Power Isolated RS-485
Transceiver
  • KEY BENEFITS
  • iCoupler Signal Isolated RS-485/RS-422
    transceiver, configurable as half or full duplex
  • isoPower integrated isolated DC/DC converter
  • 15 kV ESD protection
  • RS485 input/output pins
  • Data rate 16 Mbps
  • 5 V or 3.3V operation
  • 256 nodes on bus
  • True fail-safe receiver inputs
  • High common-mode transient immunity gt25 kV/µs
  • Safety and regulatory approvals (targeted)
  • UL recognition
  • 2500 VRMS for 1 minute per UL 1577
  • VDE Certificates of Conformity
  • DIN VVDE V 0884-10 (VDE V 0884-10)2006-12

ADM2582E
Package
20-ld W-SOIC

Sampling Final Release
Yes Released
30
ADM3053 2.5kVrms Signal Power Isolated CAN
Transceiver
  • KEY BENEFITS
  • 2.5kVrms iCoupler Signal Isolated CAN
    transceiver.
  • isoPower integrated isolated DC/DC converter
  • Data rate 1 Mbps
  • 5V Vdd for isoPower.
  • 5 V or 3.3V Supply for IOs on Logic side (TXD
    RXD)
  • 110 nodes on bus
  • Integrated bus miswire protection
  • -40 to 85 degC
  • High common-mode transient immunity gt25 kV/µs
  • Safety and regulatory approvals (targeted)
  • UL recognition 2500 VRMS for 1 minute per UL
    1577
  • VDE Certificates of Conformity
  • DIN EN 60747-5-2 (VDE 0884 Rev. 2) 2003-01
  • VIORM 560 V peak

Package Package Package
20-ld W-SOIC 20-ld W-SOIC 20-ld W-SOIC

Sampling Final Release
Now Q211
31
Solar PV Inverter Current Sensing by isolation
ADC
Transformerless Topology
  • Need to monitor the quality of the three phase AC
    current being placed on the grid
  • Each country has a spec which outlines the
    allowable amount of DC current that can be
    present within the AC current. Need to detect DC
    current to a resolution of 1.6mA within a 30A AC
    current
  • Inverter OEMs are move away from Hall Effect
    Sensor due to their resolution limitation

32
AD7400A/7401A 5 kVrms, Isolated 2nd Order Sigma
Delta Modulator
  • KEY BENEFITS
  • High Performance Isolated ADC
  • 16 Bit NMC
  • 2 LSB (typ) INL with 16-bit Resolution
  • 1.5mV/C (typ) offset drift
  • /-250mV differential analog input
  • -40C to 125C Operating Temperature Range
  • 5 KVrms, Isolation Rating (per UL 1577)
  • Maximum continuous working voltages
  • 565Vpk AC Voltage Bipolar waveform
  • 891Vpk AC Voltage Unipolar waveform (CSA/VDE)
  • 891V DC (CSA/VDE)
  • Ideal for Motor Control and DC-AC Inverters
  • Shunt resistor current feedback sensing
  • Isolated voltage measurement
  • Ext-clocked version simplifies synchronisation

Released
Product Data Rate Clock SNR (typ) ENOB (typ) Vin /-250mV INL (typ) Package
AD7400A 10MHz Internally Clocked 80dB 12.5 /-2 LSB 16-Lead SOIC 8-lead Gull Wing
AD7401A 20MHz Externally Clocked 83dB 13.3 /-1.5 LSB 16-Lead SOIC
33
Isolation Amplifiers in Solar PV Inverter
  • Current Monitoring
  • Common in Inverter designs
  • Servo designs, physical distance from shunt to
    control board
  • One customer example, 10 of models use isolated
    amplifier due to cable length
  • Where Isolated Amplifier in place and 9 to 10
    bit performance is sufficient use AD7400 RC

34
3-Stage PV Converter Architecture
isoAmps vs Isolated ADCs?
35
Typical Current Voltage Sensing Products
  • DC Panel-side Sensing
  • Shunt Current Sensors AD740x isolated Sigma
    Delta modulator AD8212 linear shunt
    monitor to 65V and with external PNP
    transistor, to 500V
  • Resistive Voltage Dividers AD740x
  • HE Sensors OPx177 Precision Op Amps
  • AC Grid-side Sensing
  • Shunt Current sensors AD740x isolated sigma
    delta modulator AD8276 low power unity gain
    Difference amplifier
  • HE Sensors OPx177 Precision Op Amps
  • CT VT Sensors AD8275 Gain of 0.2, level
    translator amplifier AD740x OPx177

36
Output Current Monitoring using a Current Shunt
DC AC current measured by wide dynamic range ADC
Solar9e
37
Typical Signal Conditioning Filtering Circuitry
for CT Signal Conditioning
Relay19
38
AD8210 Current Sense Amplifier
  • Key Features
  • Wide CMV Operating Range
  • -2V to 65V (70V survival)
  • Fixed Gain of 20
  • Sense Current In 1 or 2 Directions
  • Voltage Out
  • 500kHz Frequency Range
  • 5MO Input Impedance
  • Operating Temperature Range
  • SOIC -40C to 125C
  • Platforms
  • Industrial and Automotive
  • Battery Charging
  • Motor Control
  • Industrial solenoid control
  • Switching Power Converter Control
  • Solar PV Inverter
  • Diagnostics

Price Production
1.79 1k/yr Now
  • Key Specs
  • Offset 1mV Max
  • Offset Drift 8µV/C Max
  • DC CMRR 120 dB typ
  • AC CMRR 80dB Min up to 40kHz
  • Gain Drift 20ppm/C

39
AD8210 Application Examples
DC/DC Converter
DC Motor Control
14V
To control circuitry
  • Motor Control Applications
  • Industrial DC Motor Control
  • Medical Imaging Machine Motor Control
  • Automotive DC Motor and Solenoid Control
  • DC/DC Converter Applications
  • Power Supply
  • Base Station
  • Battery Charging
  • Solar PV Inverter

40
AD8212 Current Sense Amplifier
  • Key Features
  • 6V to gt500V Common Mode Range
  • Adjustable Gain
  • Current Output
  • Self Biased (no additional supply needed)
  • Output Current Compensation
  • Platforms
  • Industrial, Automotive
  • Battery Charging
  • DC/DC Converters
  • Solar PV Inverter
  • Hybrid Vehicles
  • General Inverter
  • Industrial solenoid control
  • Smart Fuses
  • Diagnostics

0.03 Transistor (Example Philips PMBTA92
300V Breakdown)
Price Production
Now
  • Key Specs
  • Offset 2mV Max
  • Offset Drift 10µV/C Max
  • CMRR 90dB
  • Gain Drift lt50ppm/C

41
AD7656-1 6-Channel 16-Bit 250kSPS Simultaneous
Sampling
  • KEY BENEFITS
  • High Integration
  • 250 kSPS, 6 S/H 6 ADCs in One Package
  • Parallel/Serial/ Daisy Chain Interface modes
  • 5 V, 10 V Input Ranges
  • Key Specifications
  • 85dB SNR at 100 kHz Input
  • 4 LSBs INL
  • 64-Lead LQFP Package
  • 2.5 V Reference and Buffer
  • Fabricated on ADI iCMOSTM -

Resolution Input Channels INL, Max. Interface Package
16-Bits 5 V, 10 V 6 4 LSB Ser/Par 64-LQFP
AD7657-1 and AD7658-1
Same as AD7656-1 except AD7657-1 14- bits resolution AD7658-1 12- bits resolution
42
AD7606 16 bit, 8 channel Data Acquisition System
Released
  • Features
  • 8 channels simultaneous sampling
  • Single 5V supply operation
  • -10V -5V bipolar input
  • Analog input clamp protection
  • 1Meg Resistor input impedance
  • 2nd Order Analog Anti-Alias Filter
  • Flexible Digital filter
  • 2.5V reference and reference buffer
  • Serial and Parallel interface.
  • 64 lead LQFP Package
  • Performance
  • 90dB SNR _at_ 200k
  • 95.5dB SNR _at_ 50k (digital filter)
  • 100mW Power
  • INL - 2 LSB, DNL - 1 LSB
  • Input Clamps to -16.5V
  • NFS/PFS Code 0.025 _at_ 25

AD7606-4/AD7606-6
  • As per AD7606 except
  • 4,6 channel

AD7608/AD7609
  • As per AD7606 except
  • 18-Bit S.E. / 18-Bit Diff
  • Release Q3

AD7607
  • As per AD7606 except
  • 14-Bit

43
ADP2114 Configurable, Dual Output, Synchronous
Regulator
  • Key Features
  • Flexible output configuration
  • Two independent outputs 2A/2A or 3A/1A
  • Single 4A output PWMs 180 phase shifted
  • Gate-drive optimized to support high performance,
    noise sensitive converters
  • Current mode control for fast transient
  • 95 peak efficiency
  • Light load, pulse-skip mode for improved
    efficiency
  • Bi-directional synchronization
  • Independent Enable Power Good
  • Fixed Programmable VOUT options
  • Programmable frequency options
  • 300kHz, 600kHz, and 1.2MHz
  • Applications
  • Point of Load regulation
  • Communications and Networking
  • Consumer
  • Industrial, Instrumentation and Healthcare

Input Voltage Guaranteed Output Current Package Options Junction Temperature Range Status
2.7V to 5.5V 2A/2A, 1A/3A, or 4A LFCSP-32L 5mm x 5mm -40C to 125C Released
44
ADP2114 in industry application example
Power PC
1.5V /1.5A
ADP2114
Core
5V input
3.3V /1A
Analog
2.5V /100mA
ADP1710
I/O
  • Key factor to design win
  • Dual outputs match the system requirement.
  • High efficiency and small solution size (Sync
    Buck, Inductor1uH).
  • Win oven from Competition LT3501, TPS54386,
    LM26400

45
ADP2118 3A, 1.2MHz / 600kHz, High Efficiency,
Synchronous, Step-Down DC-to-DC Converter
  • Key Features
  • Vin Range 2.3V to 5.5V
  • Continuous output current 3A
  • Output voltage range Adj. 0.6V up to Vin or
  • Fixed output voltages 1.0, 1.2, 1.5, 1.8, 2.5,
    3.3V
  • Output voltage accuracy 1.5
  • Switching frequency 1.2MHz or 600kHz or
  • External Synchronization between 600kHz 1.4MHz
    with Phase Shift Selection, 0 or 180
  • Internal Compensation
  • Voltage Tracking
  • Selectable PWM or PWMPFM modes
  • Current-Mode Control Architecture
  • Power good output voltage monitor
  • Integrated soft-start
  • Starts up into a pre-charged output
  • UVLO, OVP, OCP (Hiccup), thermal shutdown

45
46
ADP5034 Dual 3 MHz 1.2A BuckRegulators with
Dual 300mA LDOs in LFCSP
  • KEY BENEFITS
  • Input voltage range 2.3 V to 5.5 V
  • Two 1.2A Buck Regulators, adj output voltage
    option
  • Two 300mA LDOs, adj output voltage option
  • Factory Programmable or Ext. Adjustable Output
    Voltages
  • Initial Regulator Accuracy 1
  • Over current and thermal protection
  • Soft-Start Under-voltage Lockout
  • Buck1 and Buck2 Key Specifications
  • Current Mode Architecture for excellent transient
    response and 100 duty operation
  • 3MHz operating frequency
  • Forced PWM and Auto PWM/PSM modes
  • Out of Phase operation for reduced input
    filtering
  • LDO1 and LDO2 Key Specifications
  • Stable with1 µF ceramic output capacitors
  • High PSRR
  • 65dB PSRR 1kHz to 10 kHz
  • Low output noise
  • 80µVrms typical output noise at VOUT3 2.5 V
  • KEY APPLICATIONS
  • Industry Devices
  • Multivoltage power for processors, ASICs, FPGAs
    and RF chipsets

47
ADE7878 Poly-Phase Metering AFEIndustry Leading
Accuracy and Features
  • Highest Overall Poly-Phase Accuracy Exceeds Class
    0.2 Spec
  • lt0.2 error in active and reactive energyover
    dynamic range of 30001
  • Fundamental Only and Total Energy Measurements
  • Active and reactive energies
  • Tamper Functionality
  • Able to detect and continue operatingunder
    various tamper conditions
  • Integrates Core ADI Technologies
  • Programmable Gain Amplifiers Second Order Sigma
    Delta AD Converters Fixed Function DSP I2C,
    SPI, HSDC Serial Interfaces

48
ADE7953 - Industrys Most Accurate Single Phase
AFE
  • Measurements active, reactive, and apparent
    energy sampled waveform Irms and Vrms
  • Active Reactive Energy
  • (0.1) over a dynamic range 30001
  • Input Sensor Options
  • Shunt, current transformer or Rogowski coil
  • Two Independent Current Channels
  • Communication Options
  • SPI, I²C or UART
  • Power Quality Information
  • Zero crossing output pin (ZX)
  • Reverse polarity output pin (REVP)
  • No Load and SAG detection
  • Peak/Over current detection
  • Supply Voltage 3.3V (5mA typical)
  • 28 Lead LFCSP Package (5x5mm)

ADE7953 Functional Block Diagram
Released and in Volume Production
48
49
A Broad Range of ADI Products Address the Needs
of Next-Generation Meter Architectures
50
ADI main Products in Solar PV application
-- Processor -- Reference design
51
ADuC, Blackfin and SHARC Processor families for
Motor and Power Applications
Connectivity and Control Fixed Point- and
Embedded processing
Optimal performance Floating point
Balance of ARM and Signal conditioning
Blackfin enables embedded processing with
balanced mix of peripherals
SHARC offers Floating point SIMD Super Harward
architecture that extends performance to 450
MHz/2700 MFLOPs
ADuC family embed Processing capacities for
Advanced power with a low cost and power in
perspective
  • Some features
  • IEEE 1588 eMAC
  • Embedded Serial / parallel Flash
  • PWM output for 3-phase inductor applications
  • Integrated ADC and mixed signal functionality
  • Some features
  • 5Mb of on chip RAM
  • DDR2 memory controller
  • Link ports for cluster applications
  • Build in HW accelerators for FFT and filter
  • Some features
  • 16/32-bit ARM7 TDMI core
  • 44MIPS performance
  • 3Phase PWM
  • 12-bit16/24-bit ADC

52
ADSP-BF506FHigh performance motor control
processor
  • Key Features
  • 400 MHz(Max) LP process
  • 32Mbit Executable Flash (Instructions and Data)
  • ADC 12 channels, 12-bits, 2MSPS
  • x2 UARTs, with flow control
  • x2 SPORTs
  • x2 SPIs
  • x1 TWI (I2C)
  • x8 32-bit GP Timers
  • x1 CAN
  • 6-pair PWM Unit (in addition to x8 Timer PWM)
  • x35 GPIO (muxed with interfaces)
  • Two 32-bit up/down counters with rotary support
  • Removable Storage Interface (eMMC)
  • x1 PPI, up to 16-bits
  • Package Options
  • 14 x 14 mm, 120-lead, .4 mm pitch LQFP with dual
    exposed paddles with flash and ADC
  • Operating temp -40C to 85C

SYSTEM CONTROL BLOCKS
EMULATOR TEST AND CONTROL
TWI (I2C Compatible)
EVENT CONTROLLER
WATCHDOG TIMER
PLL
RSI (Removable Storage Interface)
BLACKFIN PROCESSOR CORE
FLASH 32Mbit
DATA
SRAM Cache 16kB 16kB
SYSTEM INTERFACE UNIT
L1 MEMORY
PERIPHERAL BLOCKS
ACM
UART0 With Flow CNTRL
SPORT0
SPI1
TIMER0-7
PWM 6-pairs
UART1 With Flow CNTRL
SPI0
CNT Rotary x2
SPORT1
CAN
PPI
Package Option
35 GPIO
53
Cortex M3 Core with Radio Chip
Product Radio Specs Analog Specs MCUPeripherals
ADuCRF101 Based on popular ADF7023 Frequency Bands 431MHz to 464MHz 862MHz to 928MHz Data rates supported 1 kbps up to 300kbps Programmable Channel Filter BW Patented fast settling AFC Digital RSSI Integrated PLL loop filter and Tx/Rx switch Packet Handling Smart wake mode Multi-channel, 12-bit, 1 Msps ADC On-chip Voltage Reference On-chip Temp sensor 16MHz Cortex M3 128KB Flash 16KB SRAM UART, I2C SPI serial I/O 29 GPIO 2 General Purpose Timers Wake-up Timer Watchdog/RTC Timer PWM
54
ADuCRF101 Block Diagram
ADuCRF101
55
Solar PV Inverter Reference Design
Parameter Value Units
Utility Voltage 120 or 240 (jumper selectable) Vrms
Utility Frequency 60 or 50 (jumper selectable) Hz
Input Voltage Range 20-80 V (dc)
Output Power 300 Watts
Overall Efficiency 96
Power Motor Control
56
Inside the Box
57
Goals of this Demonstration
  • A platform to demonstrate energy conversion as
    applied to solar photovoltaic (PV) and other
    alternative energy systems.
  • A platform to demonstrate and develop algorithms,
    running on a BF506F processor, central to the
    operation of an inverter and/or charge
    controller. These modular algorithms include
  • Maximum power point tracking (MPPT).
  • Ac current regulation.
  • Ac voltage regulation.
  • Anti-islanding.
  • Dc bus voltage regulation.
  • Communication to external devices.
  • A platform to evaluate computational requirements
    placed on a BF506F processor used for renewable
    energy applications.
  • A platform to provide reference software and
    inverter hardware design
  • Hardware BOMs, schematics and artwork provided
    with kit
  • Firmware provided by Advanced Energy Conversion
  • Some high level control code source will be
    available royalty free
  • Key software functions considered intellectual
    property of AEC can be licensed
  • Contact timothy.resker_at_analog.com for more
    details

58
PV Inverter Application Capabilities
  • Boosting the voltage output by the solar PV panel
    into a sufficiently high voltage to allow for
    inversion into either a 120V (rms), 220V (rms),
    or 240V (rms) utility voltage at either 50Hz or
    60Hz.
  • Using the bidirectional dc/dc converter for
    maximum power point tracking (MPPT) of the solar
    panel output.
  • Operating the bidirectional dc/dc converter in
    reverse to deliver energy to the dc input, as in
    battery charging.
  • Inverter operation for either output current
    regulation or output voltage regulation.
  • Using the single-phase inverter as a buck
    converter to support battery charging.
  • Aggregating energy from multiple sources into a
    common dc bus before inversion into the utility.
  • Operation with a fixed or variable dc bus
    voltage. Regulation of the dc bus voltage can be
    accomplished through either the bidirectional
    dc/dc converter, or the single-phase inverter.

59
Solar PV Inverter Reference Design
  • Designed and owned by Advanced Energy Conversion
  • Engineering services company with expertise in
    power electronics
  • Experienced in bringing PV Inverter solutions to
    market
  • Based in Schenectady, NY., USA
  • www.advancedenergyconversion.com
  • Based on BF506F EZ KIT evaluation board connected
    to PV Inverter board designed by AEC
  • Software developed and owned by AEC
  • Hardware, BOM, Gerber Files etc available
    free-of-charge
  • Available in March 2011
  • May be purchased from AEC or Analog Devices
  • Requires BF506F EZ KIT (sold separately)
  • Key Contacts
  • Marc Gitlitz Advanced Energy Conversion
  • mgitlitz_at_advancedenergyconversion.com
  • Tim Resker Product Marketing, PDSP CPT, Analog
    Devices
  • Timothy.resker_at_analag.com
  • Bill Slattery Renewable Energy Segment Mgr,
    Analog Devices
  • Bill.slattery_at_analog.com

Power Motor Control
60
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