Dynamic Break and Distortion Filter for Power Converters
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Solution Overview
Problem
Conventional power converters require additional active devices and control mechanisms to dissipate power when they cannot deliver power to a load or power grid, which increases complexity and cost.
Innovation Solution
A combined dynamic break and distortion filter using passive elements, such as inductors and capacitors, that selectively dissipate power by changing the chopping frequency of the inverter, eliminating the need for additional active devices and reducing the form factor and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional dynamic breaks use additional active devices and control mechanisms to dissipate power, then power dissipation capability is improved, but device complexity increases
Solution Approach 1:
The patent combines the dynamic break function and distortion filter function into a single passive circuit structure. The L-shaped filter configuration integrates power dissipation capability with distortion filtering, eliminating the need for separate active devices and control mechanisms while maintaining both functions.
Solution Approach 2:
The passive circuit structure automatically dissipates power and filters distortion without requiring external control signals or active switching devices. The circuit self-regulates based on the input signal characteristics, eliminating the need for additional control hardware and reducing overall system complexity.
2Loss of energy
If conventional dynamic breaks use additional active devices, then power dissipation capability is improved, but manufacturing cost increases
Solution Approach 1:
The patent replaces expensive active devices with passive circuit elements (resistors, capacitors, inductors) that are simpler and cheaper to manufacture. The passive L-shaped filter structure uses basic passive components that are more cost-effective than active switching devices and control circuitry.
3Loss of energy
If conventional dynamic breaks use additional active devices and control mechanisms, then power dissipation capability is improved, but form factor increases
Solution Approach 1:
The patent merges the dynamic break function and distortion filter function into a single compact passive circuit structure. The L-shaped filter configuration achieves both power dissipation and filtering in one integrated unit, reducing the overall space required compared to separate active devices and control mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient power dissipation within the power converter without additional active devices or control hardware, reducing complexity and cost while maintaining reliability.
Implementation Method 1
the AC power with the second chopping frequency is dissipated in the resistor
Implementation Method 2
current does not substantially flow through the inductor and capacitor at the first chopping frequency and does substantially flow through the inductor and capacitor at the second chopping frequency
Data Source
AI summary
Systems, methods, and apparatus for providing a dynamic break and distortion filter. In one embodiment, an apparatus can include an inverter providing alternating current (AC) power at one of a first and second chopping frequency and a filter. The filter can include an input port receiving the AC power and an output port providing output power by selectively passing the AC power from the input port to the output port. The filter may further include an inductor electrically connected to one of the input port and output port and a capacitor electrically connected to the inductor and to a resistor, wherein current does not substantially flow through the inductor and capacitor at the first chopping frequency and does substantially flow through the inductor and capacitor at the second chopping frequency, and wherein the AC power with the second chopping frequency is dissipated in the resistor.