INSULATION MONITOR AND METHOD FOR OPERATING SAME

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Inventor(s)

INSULATION MONITOR AND METHOD FOR OPERATING SAME - A simplified explanation of the abstract

This abstract first appeared for US patent application 18292401 titled 'INSULATION MONITOR AND METHOD FOR OPERATING SAME

Simplified Explanation

An insulation monitor for a high-voltage onboard electrical system of a motor vehicle is described. It includes Y-capacitors between the positive and negative potentials and the vehicle earth. The monitor can apply a negative or positive current to limit contact current in case of an insulation fault and determine insulation resistances.

Monitors high-voltage onboard electrical systems in motor vehicles
Uses Y-capacitors to connect positive and negative potentials to the vehicle earth
Applies negative or positive current to limit contact current in case of insulation fault
Determines insulation resistances based on measured voltage and recharging current

Key Features and Innovation

Y-capacitors for insulation monitoring
Current source for applying negative or positive current
Voltmeter for measuring potentials
Limits contact current in case of insulation fault
Determines insulation resistances based on voltage and recharging current

Potential Applications

This technology can be used in various high-voltage onboard electrical systems in motor vehicles to monitor insulation and prevent faults.

Problems Solved

This technology addresses the need for effective insulation monitoring in high-voltage onboard electrical systems to prevent accidents and damage.

Benefits

Improved safety in high-voltage electrical systems
Early detection of insulation faults
Prevents damage to electrical components
Allows for maintenance based on insulation resistance measurements

Commercial Applications

Automotive industry for electric vehicles
Electrical system manufacturers
Maintenance and repair services for high-voltage systems

Prior Art

Readers can explore prior art related to insulation monitoring systems in high-voltage electrical systems in motor vehicles to understand the evolution of this technology.

Frequently Updated Research

Researchers are constantly working on improving insulation monitoring systems for high-voltage onboard electrical systems to enhance safety and efficiency.

Questions about Insulation Monitoring Systems

How does the insulation monitor detect faults in the system?

The insulation monitor detects faults by measuring the potentials between the positive and negative terminals and the vehicle earth, applying current when predefined values are exceeded or fallen below.

What are the main benefits of using an insulation monitor in a high-voltage onboard electrical system?

The main benefits include improved safety, early fault detection, prevention of damage, and the ability to perform maintenance based on insulation resistance measurements.

Original Abstract Submitted

An insulation monitor for a high-voltage onboard electrical system of a motor vehicle is provided. A respective Y-capacitor is arranged between the positive potential and the vehicle earth and between the negative potential and the vehicle earth. The insulation monitor has a current or voltage source, a voltmeter for measuring at least one of the potentials, and is configured to apply a negative current by the current source when the potential measured by the voltmeter exceeds a predefined upper value and to apply a positive current by the current source when the potential measured by the voltmeter falls below a predefined lower value. The current thus being limited to a maximum permissible contact current in the case of an insulation fault and it is possible to infer the magnitude of the insulation resistances using the voltage measured by the voltmeter and the recharging current that has been fed in.