Multi-Source Power Converter Integration

I am building a low-power (below 1 kW) drive system that blends a fuel cell, solar panel string and a battery into one regulated DC bus. This bus will feed an ESC that drives a BLDC motor, with the motor speed set by a simple potentiometer on the throttle input... (Budget: ₹12500 - ₹37500 INR, Jobs: Bill of Materials (BOM) Analysis, Circuit Design, Electrical Engineering, Electronics, Embedded Systems, MATLAB, Microcontroller)