Voltage Boost Converter for Actuator Positioning Precision
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Solution Overview
Problem
Existing electrically-driven actuator systems in power conversion systems, such as gas and steam turbines, face challenges in achieving precise and efficient control, particularly when faced with varying operating conditions and insufficient external voltage supplies, leading to suboptimal performance and increased power losses.
Innovation Solution
An active voltage bus control system utilizing a voltage boost converter that boosts the input voltage on demand to the inverter stage, allowing for improved actuator performance by providing higher voltage levels when needed, thereby enhancing precision, accuracy, and speed, while reducing power losses and thermal stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a voltage boost converter is added to the electrical positioning driver, then actuator performance (precision, accuracy, speed) is improved, but device complexity increases
Solution Approach 1:
The voltage boost converter is implemented with dynamic control that adjusts the voltage output based on real-time actuator position feedback and load conditions. The controller monitors the actuator state and activates the voltage boosting function only when high torque is required, rather than maintaining high voltage continuously. This dynamic operation improves positioning precision during critical moments while avoiding the complexity and power consumption of a permanently active high-voltage system.
2Speed
If voltage is boosted continuously to improve actuator performance, then precision and speed are improved, but power losses increase
Solution Approach 1:
The voltage boost converter operates periodically rather than continuously, activating only during specific phases when the actuator requires high torque or rapid movement. The controller detects when voltage boosting is necessary based on position feedback and load conditions, then applies boosted voltage temporarily. After the critical maneuver is complete, the system returns to normal operating voltage, significantly reducing power losses while maintaining high response speed when needed.
3Productivity
If higher voltage is applied to the actuator motor, then actuator speed and precision are improved, but thermal stress and reliability concerns increase
Solution Approach 1:
The system dynamically adjusts voltage levels based on real-time operational requirements rather than maintaining constant high voltage. The controller monitors actuator position, speed, and load conditions, applying high voltage only during brief periods when rapid movement or high torque is required. During normal operation, the system uses lower voltage, reducing thermal stress and improving reliability while maintaining high productivity when needed.
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
The active bus control system improves the efficiency, reliability, and lifespan of actuator systems by enabling high-performance operation even with low external voltage inputs, reducing power losses, and allowing for better mechanical energy storage, thus optimizing actuator performance and reducing voltage stress.
Implementation Method 1
A voltage boost converter in the electrical positioning driver receives an input voltage. The voltage boost converter applies the input voltage or a boosted voltage to an inverter in the electrical positioning driver.
Data Source
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AI summary
In some aspects, an actuation system includes an electrical positioning driver and an electrically-driven actuator. A voltage boost converter in the electrical positioning driver receives an input voltage. The voltage boost converter passes the input voltage to a voltage bus in the electrical positioning driver. The voltage on the voltage bus is converted to an actuator power signal that controls the electrically-driven actuator. The voltage boost converter boosts the voltage on the voltage bus to control a mechanical output performance of the electrically-driven actuator.