Heating Power Supply Apparatus with Bridge Circuits for Polycrystalline Semiconductor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing heating power supply apparatuses experience significant electric power loss due to the use of thyristor switches on the output sides of thyristor rectifiers, which switch between series and parallel connections, leading to increased energy consumption and inefficiency when handling negative resistance loads like polycrystalline semiconductors.
Innovation Solution
The proposed solution involves a heating power supply apparatus with bridge circuits that include rectifier circuits with positive and negative half-wave control electrodes, connected to power supply transformers, allowing for selective conductive and non-conductive control to manage power feeding and series/parallel connections of loads, reducing electric power loss by optimizing voltage and current distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thyristor switches are provided on the output sides of thyristor rectifiers to switch between series and parallel connection, then the power supply apparatus can handle negative resistance loads with improved power factor and reduced installed capacity, but electric power loss increases significantly
Solution Approach 1:
The invention extracts and removes the thyristor switches from the circuit configuration. Instead of using thyristor switches on the output sides of rectifiers to switch between series and parallel connections, the patent employs a transformer with multiple secondary windings that can be directly connected in different configurations, eliminating the switching components that caused power loss while maintaining the ability to handle negative resistance loads effectively
2Adaptability or versatility
If eight circuits of thyristor switches are used for switching modes on the load sides, then three energization modes can be realized (individual energization, energization to two loads in series, energization to four loads in series), but device complexity and electric power loss increase
Solution Approach 1:
The invention merges the switching function into the transformer structure itself. By providing a transformer with multiple secondary windings that can be directly connected in different configurations, the patent combines the power transformation and connection switching into a single integrated component, eliminating the need for separate thyristor switch circuits and reducing overall device complexity
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 enables reduced electric power loss by controlling power feeding directions and series/parallel connections of loads, improving power factor and reducing energy consumption, especially during the heating of negative resistance loads like polycrystalline semiconductors, and allows for efficient switching between different energization modes.
Implementation Method 1
a plural number of bridge circuits, each having a rectifier circuit with positive half wave control electrodes 24, 27, 33, and 35 and a rectifier circuit with negative half wave control electrodes 25, 28, 34, and 36
Implementation Method 2
each of the plural number of the bridge circuits being connected to one winding of a power supply transformer
Data Source
AI summary
A plural number of bridge circuits, each having a rectifier circuit with positive half wave control electrodes and a rectifier circuit with negative half wave control electrodes, and each of the plural number of the bridge circuits is connected to one winding of a power supply transformer; the rectifier circuit with negative half wave control electrodes selected from the plurality of the bridge circuits is electrically conducted when a predetermined the rectifier circuit with positive half wave control electrodes of the plurality of the bridge circuits is electrically conducted; the rectifier circuits with positive half wave control electrodes and the rectifier circuits with negative half wave control electrodes are connected by a plurality of loads.