Integrated Motor Power Regulation Circuit With Isolated Multi-Output Drive
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Solution Overview
Problem
The drive systems of motor power source regulation circuits are complex and inefficient, with low reliability due to separate control of independent rectifier and drive modules, particularly in power supply control involving many motor loads.
Innovation Solution
A motor power source regulation circuit integrating a power factor correction circuit, isolation circuit, and multiple power source conversion circuits, controlled by a single control circuit, which converts AC input signals to DC or AC signals for DC and AC motors, utilizing a multi-winding transformer for isolation and efficient energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If independent rectifier modules and drive modules are used separately for each motor load, then each module can be independently controlled, but the entire drive system becomes complex and efficiency decreases
Solution Approach 1:
The patent combines multiple rectifier modules and drive modules into a single integrated power supply device. The rectifier unit converts AC power to DC power, which is then distributed to multiple drive units through a common DC bus. This merging approach maintains independent control capability for each motor load while significantly reducing system complexity compared to completely separate modules.
Solution Approach 2:
The integrated power supply device serves multiple functions: it acts as a rectifier for AC-to-DC conversion, provides a common DC power source for multiple motors, and enables independent control of each drive unit. This multi-functionality reduces the need for separate dedicated components for each motor load.
2Ease of operation
If independent rectifier modules and drive modules are used separately for each motor load, then each module can be independently controlled, but reliability decreases
Solution Approach 1:
By integrating multiple modules into a unified system with a common DC bus, the patent improves reliability through shared power distribution and coordinated control. The centralized architecture allows for better fault detection, isolation, and protection mechanisms that enhance overall system reliability while maintaining independent control of each drive unit.
3Ease of operation
If many motor loads are controlled with separate power supply circuits, then each motor can be independently regulated, but the power supply control becomes more complex
Solution Approach 1:
The patent merges multiple power supply control functions into a unified system with a common rectifier and DC bus. The control unit receives feedback from multiple drive units and coordinates their operation through the shared DC power source, significantly simplifying the power supply control architecture compared to completely separate power supplies for each motor.
Solution Approach 2:
The common DC bus acts as an intermediary between the rectifier unit and multiple drive units. It provides a standardized power distribution interface that simplifies control by decoupling the rectifier from individual drive unit complexities, allowing centralized power management while maintaining independent drive control.
4Ease of manufacture
If separate control circuits are used for each module, then each module can be optimized independently, but the entire drive system efficiency decreases
Solution Approach 1:
The integrated power supply device enables centralized power conversion with a single rectifier unit serving multiple drive units. This reduces redundant power conversion stages and improves overall system efficiency while still allowing independent optimization of each drive unit's control parameters for its specific motor load.
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
This integration simplifies hardware circuits, enhances reliability and efficiency, ensures timely control, and meets electrical safety regulations by integrating power factor correction and power source conversion, while providing electric isolation and voltage matching.
Implementation Method 1
a power factor correction circuit for coupling with an AC power source to receive an AC input signal from the AC power source and convert the AC input signal to a first DC signal
Implementation Method 2
the primary winding receives the first AC signal from the first switch sub-circuit and converts the first AC signal to two or more second AC signals by utilizing two or more pieces of the secondary winding
Data Source
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AI summary
This application relates to a motor power source regulation circuit, a control method and an electronic device. The motor power source regulation circuit includes a power factor correction circuit, an isolation circuit, a first power source conversion circuit (s), a second power source conversion circuit (s) and a control circuit. The isolation circuit includes a first switch sub-circuit and an isolation transformer. The power factor correction circuit regulates an AC input signal to a first DC signal. The first switch sub-circuit converts the first DC signal to a first AC signal. The isolation transformer converts the first AC signal to two or more second AC signals. The first power source conversion circuit converts the second AC signal to a DC drive signal and outputs it to a DC motor. The second power source conversion circuit converts the second AC signal to an AC drive signal and outputs it to an AC motor.