Reconfigurable Power Converter Modulation Scheme Switching
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Solution Overview
Problem
Conventional power converters either minimize switching losses or conduction losses but not both effectively across the full operating range, leading to inefficiencies at varying current levels.
Innovation Solution
A reconfigurable power converter with a PWM controller that switches between two modulation schemes based on current-level properties, transitioning from minimizing switching losses at low currents to minimizing conduction losses at high currents, by dynamically interchanging the functionality of inductor and transformer legs as linear or resonant legs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single modulation scheme is used across the full operating region, then device complexity is reduced, but efficiency is compromised at varying current levels
Solution Approach 1:
The power converter is designed with universal capability to operate under two different modulation schemes using the same hardware components. The controller can selectively apply either the first or second modulation scheme based on operating conditions, making the system multi-functional without requiring additional hardware for each mode.
Data Source
AI summary
A reconfigurable power converter is provided that includes a pulse-width modulation (PWM) controller. The PWM controller is configured to switch between a first modulation scheme and a second modulation scheme when a current-level property crosses a transition threshold.