Power Supply System With Integrated DC-DC Converter
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Solution Overview
Problem
Existing power supply systems require multiple rectifiers and inverters to provide power to low voltage and extra-low voltage actuators, which is inefficient and costly, especially in systems with varying dynamic load profiles and excess power generation.
Innovation Solution
A power supply system incorporating a DC-DC converter connected to a rectifier to convert low input DC voltage into extra-low DC voltage, which is then converted by an extra-low voltage inverter into extra-low supply AC voltage for extra-low voltage actuators, eliminating the need for additional rectifiers and enabling bidirectional power flow for increased efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple rectifiers and inverters are used to provide power to low voltage and extra-low voltage actuators, then power supply reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines the rectifier and DC-DC converter into a single integrated power supply unit. The rectifier converts AC voltage to DC voltage, and the integrated DC-DC converter then converts this DC voltage to the required extra-low voltage, eliminating the need for separate rectifiers and inverters for each voltage level. This integration reduces device complexity while maintaining reliable power supply through coordinated operation of the combined components.
Solution Approach 2:
The integrated power supply system is designed to provide multiple output voltage levels (low voltage and extra-low voltage) from a single rectifier-DC-DC converter combination. The system can simultaneously or independently supply power to different types of actuators requiring different voltage levels, making the power supply universal and multi-functional rather than requiring dedicated supplies for each voltage requirement.
2Adaptability or versatility
If multiple rectifiers and inverters are used to provide power to low voltage and extra-low voltage actuators, then power supply adaptability is improved, but loss of energy increases
Solution Approach 1:
By merging the rectifier and DC-DC converter into an integrated system with coordinated control, the patent reduces the number of energy conversion stages. The system converts AC to DC once through the rectifier, then uses the integrated DC-DC converter to generate the required extra-low voltage, eliminating redundant AC-DC conversions that would occur with separate rectifiers. This reduces cumulative energy losses while maintaining adaptability to different voltage requirements.
Solution Approach 2:
The integrated power supply system incorporates feedback control mechanisms that monitor the power requirements of different actuators and dynamically adjust the DC-DC converter operation. This feedback control optimizes the power conversion process, minimizing energy losses by adapting the conversion ratio and switching parameters to match the actual load requirements, thereby reducing unnecessary energy dissipation.
3Adaptability or versatility
If a further rectifier is provided for extra-low voltage actuators, then adaptability to different actuator types is improved, but device complexity increases
Solution Approach 1:
The integrated DC-DC converter within the power supply system is designed to provide multiple output voltage levels including extra-low voltage required by various actuator types. The converter can independently generate different voltage levels from the same DC input, making the power supply universally adaptable to long-stator linear motors, planar motors, rotary motors, and other actuators with varying voltage requirements without adding separate rectifier circuits.
Solution Approach 2:
The patent merges the functionality of multiple power supply units into a single integrated system. Instead of having separate rectifiers for low voltage and extra-low voltage actuators, the system combines AC-DC rectification and DC-DC voltage conversion in one unit, reducing device complexity while maintaining the ability to support diverse actuator types through the versatile DC-DC converter.
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 configuration reduces the number of electronic components, enhances efficiency by allowing power feedback, and supports a wide range of power supply networks and actuator types, particularly benefiting long-stator linear motors and planar motors with dynamic loads.
Implementation Method 1
a rectifier, designed to convert a mains AC voltage into a low input DC voltage
Implementation Method 2
a low voltage inverter being connected to the rectifier and designed to convert the low DC voltage input into a low supply AC voltage
Implementation Method 3
a DC-DC converter which is connected to the rectifier and designed to convert the low input DC voltage into an extra-low DC voltage
Implementation Method 4
an extra-low voltage inverter being provided which is connected to the DC-DC converter and designed to convert the extra-low DC voltage into an extra-low supply AC voltage
Data Source
AI summary
A more efficient power supply system comprises a rectifier, a low voltage inverter, and a low voltage actuator, the rectifier converting a mains AC voltage into a low input DC voltage, the low voltage inverter connected to the rectifier and converting the low input DC voltage into a low supply AC voltage, and the low voltage inverter connected to the low voltage actuator to supply the low voltage actuator with power via the low supply AC voltage. A DC-DC converter connected to the rectifier converts the low input DC voltage into an extra-low DC voltage. An extra-low voltage inverter connected to the DC-DC converter converts the extra-low DC voltage into an extra-low supply AC voltage. The extra-low voltage inverter connected to an extra-low voltage actuator supplies the extra-low voltage actuator with power via the extra-low supply AC voltage.