Reconfigurable Power Integrated Module for Multi-Mode Motor Control
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Solution Overview
Problem
Conventional power integrated modules (PIMs) are limited in their ability to adapt to changing product requirements, as they typically perform a single function and lack flexibility in operation modes.
Innovation Solution
A PIM design that incorporates a first transformation circuit with multiple half-bridge circuits capable of operating in voltage boosting, bucking, rectifier, and inverter modes, along with a second transformation circuit and shunt units to sense currents, enabling flexible operation and adaptation to different motor control scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional PIM performs a single function, then the device structure is simple, but the adaptability to changing product requirements deteriorates
Solution Approach 1:
The first transformation circuit is designed with multiple half-bridge circuits that can be configured through different coupling relationships to perform multiple functions including voltage boosting, bucking, rectification, and inversion. This allows a single PIM device to adapt to different product requirements and operating modes without requiring separate dedicated circuits for each function, thereby improving adaptability while controlling device complexity through unified design.
Solution Approach 2:
The circuit employs dynamic reconfiguration capability where the coupling relationships among half-bridge circuits can be changed based on operating conditions. The control device can dynamically switch between different coupling configurations to adapt to varying product requirements, enabling the system to transition between voltage boosting mode, bucking mode, rectifier mode, and inverter mode as needed.
2Adaptability or versatility
If multiple transformation circuits are integrated, then the adaptability improves, but the device complexity increases
Solution Approach 1:
The patent integrates multiple transformation circuits (first transformation circuit with voltage boosting/bucking capability and second transformation circuit with inverter capability) into a single PIM device. By merging these circuits and sharing common components such as half-bridge circuits and control devices, the design achieves operational flexibility for different motor control scenarios while managing device complexity through component sharing and unified architecture.
Solution Approach 2:
The transformation circuits are segmented into modular half-bridge circuit units that can be independently controlled and reconfigured. This segmentation allows the control device to selectively activate and couple specific half-bridge circuits based on the required operating mode, enabling flexible operational capabilities while maintaining manageable device complexity through modular design and selective activation.
Data Source
AI summary
A power integrated module (PIM) and a motor control system are provided. The PIM is adapted to drive a motor. The PIM includes a first transformation circuit, a second transformation circuit, and a plurality of shunt units. The first transformation circuit includes a plurality of first half-bridge circuits, and a coupling relationship among the first half-bridge circuits is selected, so that the first transformation circuit is operated in a rectifier mode or an inverter mode. The second transformation circuit includes a plurality of second half-bridge circuits coupled to the motor. The shunt units are respectively coupled between the second half-bridge circuits and the motor and configured to sense a current between the second transformation circuit and the motor.