Freescale PXS20 三相太阳能逆变器解决方案

图1. PXS20方框图

图2. 太阳能三相逆变器基本架构图

 

 

图3. 采用H桥拓扑的太阳能三相逆变器的PWM连接框图

The demonstrator uses a standard PXS20 controller board and a 3-phase inverter analog board that can support an H-bridge or H5 topology. The input of each phase is represented by the isolated 15V DC power supplies (replacing the solar panels in this demonstrator). The control and measurement circuitry can be powered by the separated DC power source, or by one of the phase power sources.

图4.小于1kW的太阳能三相逆变器解决方案

图5.小于3kW的太阳能三相逆变器解决方案

 

图6.小于10kW的太阳能三相逆变器解决方案

图7.大于10kW的太阳能三相逆变器解决方案


图8.大于10kW的太阳能三相逆变器解决方案

 

 

 

PXS20主要特性:
• High-performance e200z4d dual core
– 32-bit Power Architecture® technology CPU
– Core frequency as high as 120 MHz
– Dual issue five-stage pipeline core
– Variable Length Encoding (VLE)
– Memory Management Unit (MMU)
– 4 KB instruction cache with error detection code
– Signal processing engine (SPE)
• Memory available
– 1 MB flash memory with ECC
– 128 KB on-chip SRAM with ECC
– Built-in RWW capabilities for EEPROM emulation
• SIL3/ASILD innovative safety concept: LockStep mode and Fail-safe protection
Sphere of replication (SoR) for key components (such as CPU core, eDMA, crossbar switch)
– Fault collection and control unit (FCCU)
– Redundancy control and checker unit (RCCU) on outputs of the SoR connected to FCCU
– Boot-time Built-In Self-Test for Memory (MBIST) and Logic (LBIST) triggered by hardware
– Boot-time Built-In Self-Test for ADC and flash memory triggered by software
– Replicated safety enhanced watchdog
– Replicated junction temperature sensor
– Non-maskable interrupt (NMI)
– 16-region memory protection unit (MPU)
– Clock monitoring units (CMU)
– Power management unit (PMU)
– Cyclic redundancy check (CRC) unit
• Decoupled Parallel mode for high-performance use of replicated cores
• Nexus Class 3+ interface
• Interrupts
– Replicated 16-priority controller
– Replicated 16-channel eDMA controller
• GPIOs individually programmable as input, output or special function
• Three 6-channel general-purpose eTimer units
• 2 FlexPWM units
– Four 16-bit channels per module
• Communications interfaces
– 2 LINFlexD channels
– 3 DSPI channels with automatic chip select generation
– 2 FlexCAN interfaces (2.0B Active) with 32 message objects

FlexRay module (V2.1 Rev. A) with 2 channels, 64 message buffers and data rates up to 10 Mbit/s
• Two 12-bit analog-to-digital converters (ADCs)
– 16 input channels
– Programmable cross triggering unit (CTU) to synchronize ADCs conversion with timer and PWM
• Sine wave generator (D/A with low pass filter)
• On-chip CAN/UART bootstrap loader
• Single 3.0 V to 3.6 V voltage supply
• Ambient temperature range –40℃ to 125℃
• Junction temperature range –40℃ to 150℃

PXS20目标应用:
Boiler Heating Control Industrial
Programmable Logic Control (PLC)
Input-Output Control (I/O Control)
Off-Grid Solar Power Inverters
Commercial Solar Power Inverters
Residential Solar Power Inverters
Unmanned Vehicles (Ground, Air, Water)
Motion Control
Process Control
Robot Manipulator  
Robotic Arm  
Medical/Healthcare
Anesthesia Unit Monitor  
Ventilators and Respirators  
Motor Control
Stepper Motor