Smart PV string combiner:
- Designed RTOS embedded firmware with emphasis on scalability and modularity.
- The designed string combiner architecture features a reconfigurable number of smart modules. Each slave module sample & calibrate string currents at high accuracy and communicate results to the master controller.
- The Master controller supports a number of advanced features including: Arc-Fault detection, Labwindows/CVI user interface and communication with outer world.
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High Power Test Station:
- Designed and programmed RTOS embedded firmware & control architecture from scratch.
- Designed HPTS mathematical models & simulation under different control strategies.
- Programmed and tested TMS DSP peripherals: EEPROM, DMA, ADCs, PWM and Timers.
- Designed and programmed different PID feedback digital control loops that control soft-start, power sequencing, system dynamics and current sharing.
- Designed a fault-tolerant HPTS system with error handling, status reporting and recovery.
- Designed HPTS advanced features including: PV simulation, Master/Slave configuration, communicating with PLC and Human Machine Interface HMI.
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200W Micro-Inverter
- Lead digital control effort for PV grid-tie micro-inverter from early concepts to final product.
- Simulated the design in Matlab/Simulink and proved functionality before actual prototyping.
- Designed and programmed different digital control loops to stabilize the new grid-tie PV inverter.
- Programmed & tested G38.1 and AS4777 standard codes that successfully passed certification.
- Developed different smart control and adaptive control algorithms that optimized the PV inverter efficiency and performance.
- Developed automated test programs for product functional verification using LabVIEW.
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Adaptive Efficiency Optimization Digital Controller:
- Developed a variable switching frequency adaptive digital controller to enhance the efficiency of DC-DC converters.
- Helped in developing and testing a new adaptive digital control algorithm to optimize the efficiency of multiphase buck DC-DC converters over wide load range.
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