Multiphase Control System Loop for Voltage Ripple Reduction
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Solution Overview
Problem
The existing multiphase DC-DC converting circuit structures have high circuit complexity and cost, and are inflexible in adjusting the number of channels according to different application environments, limiting their utilization and ability to control voltage ripple effectively.
Innovation Solution
A multiphase control system with a series-connected loop of control units, where each unit receives a sequential input signal to generate control signals for power transmission and output signals, allowing for adjustable channel numbers and reduced circuit complexity, with a controller including a multiphase input circuit, feedback control circuit, and output circuit to manage power transmission and voltage stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional multiphase DC-DC converting circuit structure is used, then voltage ripple can be eliminated effectively, but circuit complexity and cost increase
Solution Approach 1:
The control system is segmented into multiple independent control units (first control unit, second control unit, etc.), each capable of independently controlling a corresponding converting circuit. Each control unit contains its own feedback control circuit, multiphase input circuit, and multiphase output circuit, allowing distributed control that reduces the complexity of a centralized control system while maintaining effective voltage ripple elimination through coordinated operation of multiple phases.
2Object-affected harmful factors
If a conventional multiphase DC-DC converting circuit structure is used, then voltage ripple can be eliminated effectively, but cost increases
Solution Approach 1:
The patent employs multiple control units with identical or similar internal structures (each containing feedback control circuit, multiphase input circuit, multiphase output circuit). This modular copying approach allows for standardized manufacturing and assembly, reducing overall system cost despite the multiphase configuration. The repeated modular units can be produced using the same manufacturing processes and tested using similar procedures.
3Measurement precision
If the controller is designed with fixed channel specifications, then control precision is maintained, but adaptability to different application environments decreases
Solution Approach 1:
The system dynamically adjusts the number of active control units based on application requirements. The multiphase control system allows selective activation of control units (first control unit, second control unit, or both) depending on the load conditions and performance requirements. This dynamic configuration capability enables the system to adapt to different application environments while maintaining control precision through the feedback control circuits in each active unit.
4Adaptability or versatility
If sequential triggering of control units is implemented, then utilization flexibility increases, but control coordination complexity increases
Solution Approach 1:
Each control unit incorporates a feedback control circuit that receives feedback signals and adjusts control signals accordingly. The feedback mechanism in each control unit (first control unit, second control unit) ensures proper coordination during sequential operation, automatically adjusting duty cycles and timing to maintain stable output voltage. This distributed feedback approach simplifies the overall control coordination complexity compared to a centralized control scheme.
Data Source
AI summary
A multiphase control system is provided, which is adapted to convert power of an input power source into an output voltage for outputting through an output terminal. The multiphase control system comprises a plurality of control units connected in series to form a loop. Each of the control units receives a sequential input signal from an adjacent control unit connected there before through a multiphase input terminal, and generates a control signal to control power transmission from the input power source to the output terminal when determining that the output voltage is lower than a predetermined voltage value, and generates a sequential output signal at a multiphase output terminal for outputting to an adjacent control unit connected there after.