Power Converter Controller Delay Timing for Accurate Post-Switch Sampling
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Solution Overview
Problem
Power converter devices face challenges in accurately sampling parameters due to electrical noise generated during switching operations, leading to errors in controlling the device.
Innovation Solution
A controller for power converter devices is configured to sample parameters after a predetermined time period following switching operations, using a timer arrangement to delay sampling and reduce noise interference, allowing for accurate parameter measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If parameters are sampled immediately during switching operations, then real-time control is achieved, but measurement precision deteriorates due to electrical noise
Solution Approach 1:
The controller performs preliminary action by activating a timer arrangement that delays parameter sampling until after the switching operation has completed. The timer is activated in response to detecting a feature in the control signal, and sampling is performed only upon expiry of the predetermined time period, ensuring that sampling occurs away from noisy edges during switching transitions.
2Measurement precision
If sampling is delayed to avoid noise, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The controller changes the timing parameter by introducing a predetermined time period delay between the switching event and the parameter sampling. This time parameter adjustment allows the system to sample parameters at an optimal moment when electrical noise has subsided, thereby improving measurement precision while maintaining controllable timing through the timer arrangement.
Data Source
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AI summary
A controller for a power converter device, wherein the controller is configured to provide for switching of a switching component of the power converter device based on a feature in a control signal, sample at least one parameter of the power converter device upon expiry of a predetermined time period after switching of the switching component; and output the sample of the at least one parameter.