FreescalePXS20 three-phase solar inverter solution

company PXS20

Freescale Power Architecture microcontroller 32-bit dual-core dual launch to meet safety standards IEC61511 and IEC61508 (SIL3) components to reduce design complexity and reduce. PXS20 using high-performance e200z4d nuclear double-core frequency up to 120MHz, dual emission-stage pipeline core, variable length encoding (VLE), integrated memory management unit (MMU), and signal processing engine, 4KB instruction cache with error detection code, mainly used in consumer electronics, industrial control,power inverter, solar inverters, robotics and motor control. article describes the main features of PXS20, block diagram, as well as the basic architecture of solar using PXS20 control of three-phase inverter 1kW, 3kW, 10kW and greater than 10kW and micro- Chart of the solar inverter three-phase inverter solutions.

The PXS20 family of 32-bit Power Architecture ® microcontrollers is designed to specifically address the requirements of the safety standards IEC61511 and IEC61508 (SIL3). It reduces design complexity and component count by putting key functional safety features on a single chip with a dual-core, dual-issue architecture, which can be statically switched between lockstep mode (redundant processing and calculations) to decoupled parallel mode (independent core operation). The PXS20 microcontrollers are SafeAssure solutions.

The PXS20 series microcontrollers are system-on-chip devices that are built on Power Architecture technology and contain enhancements that improve the architecture's fit in embedded applications, include additional instruction support for digital signal processing (DSP) and integrate technologies such as an enhanced time processor unit, enhanced queued analog-to-digital converter, Controller Area Network, and an enhanced modular input-output system.

The PXS20 family of 32-bit microcontrollers is the latest achievement in integrated safety controllers. The advanced and cost-efficient host processor core of the PXS20 family complies with the Power Architecture embedded category. It operates at speeds as high as 120 MHz and offers high-performance processing optimized for low power consumption. It capitalizes on the available development infrastructure of current Power Architecture devices and is supported with software drivers, operating systems and configuration code to assist with users' implementations

PXS20 main features:

• 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,power inverter.6 V voltage supply

• Ambient temperature range -40 ℃ to 125 ℃

• Junction temperature range -40 ℃ to 150 the ℃

PXS20 target application:

Consumer:

Boiler Heating Control Industrial

the
Programmable Logic Control (PLC) < br />
Input-Output Control (I / O Control)

Off-Grid Solar Power Inverters

Commercial Solar Power Inverters

Residential Solar Power Inverters

Unmanned Vehicles (Ground, Air,Grid tie inverter, Water)

Motion Control

Process Control

Robot Manipulator

Robotic Arm

Medical / Healthcare

Anesthesia Unit Monitor

Ventilators and Respirators

Motor Control
The
Stepper Motor

Figure 1. PXS20 block diagram

solar PXS20 control three-phase inverter

Solar Panel 3-Phase Inverter Controlled by of the PXS20

Today, the demand for green energy is very strong. One possible option for meeting this demand is to convert solar energy into electrical energy. This process is supported by the photovoltaic (PV) solar panel, which produces various DC output voltages and output power.

In the conversion from DC to AC power, dedicated inverters maintain the right working point for the solar panel to maximize its use of solar energy. Freescale Semiconductor's processors built on Power Architecture ® technology are well suited for the control of such inverters. Freescale offers a broad portfolio of PX microcontrollers built on Power Architecture technology for power management and motor control applications. The target portfolio for these devices includes consumer, industrial, and other markets. One microcontroller from the PX Series of Power Architecture devices can control the whole 3-phase inverter in various configurations and output power.

Figure 2. diagram of the solar basic framework of the three-phase inverter

Figure 3. using H-bridge topology solar three-phase inverter the PWM connection block diagram

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,  http://www.gridtieinverter.de/

Figure 4. solar outline drawing of the three-phase inverter demo board

Figure 5. less than 1kW solar three-phase inverter solutions

Figure 6. less than solar 3kW solar three-phase inverter solutions

Figure 7,Grid tie inverter. less than 10kW three-phase inverter control solutions

Figure 8. greater than 10kW solar three-phase inverter solutions

9 solar micro inverter solutions
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