Brushless Motor Control for Universal Voltage Adaptation
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Solution Overview
Problem
Electric switch drives for medium and high electrical voltages require diverse motor types and configurations due to varying supply voltages and voltage forms, leading to increased complexity, cost, and failure rates.
Innovation Solution
A motor device comprising a brushless three-phase motor with an electronic control unit that includes a rectifier for AC voltage rectification, polarity reversal protection, and a switching unit for generating pulse-width-modulated AC drive voltage, allowing operation on different supply voltages and reducing the need for multiple motor variants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different motor types and configurations are used for various supply voltages and voltage forms, then the motor device can be adapted to different electrical switches, but the complexity and cost of the system increases
Solution Approach 1:
The patent applies universality by designing a single motor device that can operate with multiple types of supply voltages (single-phase AC, three-phase AC, and DC) through integrated voltage detection and switching circuitry. The control unit automatically detects the supply voltage type and configures the motor operation accordingly, eliminating the need for multiple specialized motor variants while maintaining adaptability to different electrical switch applications.
2Adaptability or versatility
If different motor types and configurations are used for various supply voltages and voltage forms, then the motor device can be adapted to different electrical switches, but the failure rate increases
Solution Approach 1:
The patent reduces failure rate by using a universal motor design with integrated voltage detection and switching that eliminates the need for multiple motor variants. This standardized approach reduces installation errors and compatibility issues while the automatic voltage type detection ensures proper operation across different supply voltages, thereby improving reliability.
3Adaptability or versatility
If multiple component parts and wiring variants are used for actuation, safety, locking and monitoring functions, then the motor can be configured for different applications, but the installation costs and failure rate increase
Solution Approach 1:
The patent merges actuation, safety, locking, and monitoring functions into an integrated control unit that automatically detects the supply voltage type and configures motor operation accordingly. This consolidation reduces the number of separate component parts and wiring variants needed, simplifying installation while maintaining the ability to adapt to different applications through software-based configuration rather than hardware variations.
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 solution enables operation on various supply voltages and voltage forms, reducing the complexity and cost of motor variants, lowering wear, and minimizing manufacturing faults by standardizing the motor device for different electric switches.
Implementation Method 1
The control device has a rectifier unit for rectifying a supply voltage of the motor device when the supply voltage is an AC voltage
Data Source
AI summary
A motor assembly for a switch drive of an electric switch. The motor assembly has a brushless three-phase motor and an electronic control device for controlling the three-phase motor. The control device has a rectifier unit for rectifying a supply voltage of the motor assembly if the supply voltage is an AC voltage, and for reverse polarity protection if the supply voltage is a DC voltage. The control device also has a voltage measuring unit for detecting a rectifier output voltage of the rectifier unit, a switch unit for generating a pulse width-modulated drive AC voltage for the three-phase motor from the rectifier output voltage, and a control unit for actuating the switch unit according to the rectifier output voltage.