Peak-Delivered-Power Controller for Voltage Regulator
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Solution Overview
Problem
Existing inductive maximum power point tracking (MPPT) circuitry fails to maximize delivered power at the output capacitor due to not accounting for regulator losses, resulting in suboptimal power delivery.
Innovation Solution
Implementing a peak-delivered-power (PDP) controller that monitors and adjusts the duty cycle of the voltage regulator to track and maximize output power by comparing calculated output power with previous values, increasing the duty cycle when output power is greater and decreasing it when lesser, thereby maintaining the voltage regulator at an operating point that delivers maximum harvested power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the duty cycle is increased to maximize output power, then delivered power increases, but regulator losses increase
Solution Approach 1:
The feedback mechanism monitors the actual delivered power and adjusts the duty cycle to the optimal value that maximizes output power while minimizing regulator losses. By continuously measuring output voltage and current and calculating delivered power, the system identifies the peak point and maintains operation there, preventing excessive duty cycle increases that would amplify regulator losses without proportionally increasing output power
Data Source
AI summary
Embodiments described herein concern operating a peak-delivered-power (PDP) controller. Operating a PDP includes calculating the new power output value from the output voltage value and the output current value, determining whether the new power output value is greater than the previous power output value to determine whether the voltage regulator is outputting a maximum power output, based on a determination that the new power output value is greater than the previous power output value, providing an instruction to a duty generator to increase a duty cycle of the voltage regulator, based on a determination that the new power output value is not greater than the previous power output value, providing an instruction to the duty generator to decrease the duty cycle of the voltage regulator, and replacing the previous power output value with the new power output value.