Mixed-signal controller solar inverter

40% of global energy consumption is the motor , under the impetus to improve the level of demand for factory automation , improve industrial motor power efficiency and performance requirements increase. In addition , solar PV has become incorporated into the global grid , the largest generation of energy , the cumulative installed base of 100 gigawatts , the next decade will be the fastest growing renewable energy.

For motor control and solar inverters , ADI four or five years from the start of planning , recently , ADI a brand new mixed-signal control processor ADSP-CM40x, high-performance , high-reliability motor control system and photovoltaic inverse transformer industry to promote lower system costs , and achieve a more affordable price advantage in the power grid infrastructure , and establish a new benchmark for the industry .

ADSP-CM40x series is a new generation of mixed-signal control processor ADI's family of application development for the precise control of the first member , it integrates precision (ENOB) over 13 industry 's only embedded dual -channel 16 ADC , equipped with a 24 0 M Hz floating point support ARM Cortex-M4 processor core .

ADI Marketing Manager Zhangsong Gang introduction, chose the Cortex-M4, mainly because ARM on power consumption advantages, a growing number of engineers are very familiar with this framework , the development cycle will be relatively short. The 240MHz clock speed and support for floating-point computing power , it is taking into account the future needs of industrial systems

All along , ADI has a profound accumulation , especially in the analog digital converter and DSP aspects , ADSP-CM40x give full play to the advantages of highly integrated ADC, larger RAM, harmonic analysis engine , SINC filter , PWM control and many extended interface and other functions , these functions via SIP technology package to achieve the perfect balance , not only has excellent performance analog conversion and conversion speed of up to 380ns , along with many other excellent features.

Technology as AD I have leading-edge , ADS P-CM4 0 x integrated 16-bit ADC accuracy at 2.6M sampling frequency can reach 13 or more, which enhance the performance of the whole system is critical ; ADI unique harmonic analysis engine technology for efficiency is important, it is primarily for the future of PV inverter with charger , because for motor control , the need to improve the efficiency of the algorithm is not only guaranteed but also interference in the grid-side analysis , harmonic analysis can be very better monitoring and interference suppression ;

Integrated SINC filter , it can be directly connected with the sampling resistive current detection system architecture for the isolated Σ-Δ modulator (AD7400A/AD7401A), but also cost savings to achieve the same functionality FPGA needed and engineering resources ; ADSPCM40x retained the three PWM control units, each unit supports 4 PWM output channels , which can support dual-axis , three-axis control .

ADI provides current system evaluation board includes two CM403F development kit for motor control applications 16 ADC input channels CM408F development platform and for photovoltaic inverters 24 ADC input channels . Which CM408F oriented motor control demo board high-voltage power systems , ADI also offers the option of PFC , use the power management of the power factor correction to achieve higher energy efficiency. ADI predict this feature in a future in motor control is mandatory .