Transport Module Inverter Layout for Local Regenerative Power Reuse
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Solution Overview
Problem
Conventional transport systems face inefficiencies in power usage due to intermittent acceleration and deceleration of carriages, leading to challenges in utilizing regenerative energy effectively, which results in reduced power efficiency and the need for larger power supply capacities.
Innovation Solution
The transport system incorporates at least two transport modules with coil groups and inverter units that apply alternating-current voltage, and a carriage with a magnet to receive electromagnetic force. Each inverter unit includes a diode that allows regenerative power to be stored and used locally, reducing the need for shared power supply and enhancing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a single DC power supply is connected to multiple inverter circuits in a conventional transport system, then the system structure is simplified, but regenerative energy generated during deceleration cannot be effectively reused for acceleration, reducing power efficiency and requiring larger power supply capacity
Solution Approach 1:
The patent divides the power supply system into separate DC power supplies for each inverter circuit, allowing each transport module to independently manage its own power. This segmentation enables regenerative energy from deceleration in one module to be stored and reused for acceleration in the same module, improving power efficiency without requiring oversized centralized power supplies.
Solution Approach 2:
The patent implements energy recovery by capturing regenerative energy during carriage deceleration through the diode-connected inverter circuit, storing it locally, and reusing it during subsequent acceleration phases. This recovers energy that would otherwise be lost, directly addressing the power efficiency issue while reducing the required power supply capacity.
2Power
If regenerative energy is immediately consumed as drive energy in the same control zone, then power supply capacity requirements are reduced, but the regenerative energy cannot be used as drive energy at the time of acceleration
Solution Approach 1:
The patent prepares for energy reuse by having each inverter circuit with diode connection ready to capture and store regenerative energy during deceleration phases. This preliminary energy capture enables the system to have stored energy available for immediate reuse during subsequent acceleration phases, ensuring energy availability when needed without requiring oversized power supplies.
Solution Approach 2:
The diode-connected inverter circuit acts as an intermediary energy storage mechanism between the DC power supply and the motor. It captures regenerative energy during deceleration, holds it temporarily, and releases it during acceleration, enabling energy transfer across different operational phases while reducing the burden on the main power supply.
3Power
If a single DC power supply serves multiple inverter circuits, then system cost is reduced, but the maximum peak power requirement increases, necessitating larger power supply capacity
Solution Approach 1:
The patent segments the power supply into multiple independent DC power supplies, each serving a specific inverter circuit and transport module. This segmentation distributes the peak power requirements across multiple smaller power supplies rather than concentrating them in one large supply, reducing the maximum peak power requirement for each unit while maintaining overall system capability.
Solution Approach 2:
Each transport module with its dedicated inverter circuit and DC power supply becomes self-sufficient, managing its own power requirements independently. The module can capture and reuse its own regenerative energy without relying on other modules or a centralized power supply, reducing the overall peak power requirement for the system.
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 improves power efficiency by allowing regenerative energy to be utilized as driving power within the same transport module, reducing the maximum peak power requirements and thus minimizing the need for large power supply capacities, which in turn reduces system costs and size.
Implementation Method 1
a carriage (200) having a magnet (202) installed thereon to receive an electromagnetic force from the coil group (102)
Implementation Method 2
Each of the inverter units (103) includes an inverter circuit (104) and a first diode (107). The first diode (107) is connected between the direct-current power supply (400) and the inverter circuit (104) and disposed to allow a current to flow in a forward direction
Data Source
AI summary
The transport system includes transport modules each including a coil group and an inverter unit that applies an AC voltage to the coil group. The transport system has at least one carriage having a magnet installed thereon to receive an electromagnetic force from the coil group. Each inverter unit includes an inverter circuit and a diode. The inverter circuit has a DC voltage applied thereto, the DC voltage being output from a DC power supply, and converts the DC voltage into the AC voltage. The diode is connected between the DC power supply and the inverter circuit and disposed to allow a current to flow in a forward direction from a first side of the diode connected to the DC power supply to a second side of the diode opposite to the first side when a potential on the first side is higher than a potential on the second side.