High voltage inverter discharge device

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High voltage inverter discharge device

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Enabling Smarter DC Link Discharge in EV Traction

Explore the live demonstration of the GD3162''s DC Link discharge feature and discover how NXP is enabling smarter, safer and more efficient

US20170355267A1

A DC link capacitor coupled to positive and negative DC busses between a high voltage DC source and an electric vehicle inverter is quickly discharged during a shutdown. An

Inverter 40Kw 380V HYBRID DEYE HP3 HV

The Plus 40kW 380V Hybrid Inverter guarantees injection into the grid with zero discharge, optimizing the efficiency of your solar system to the maximum.

Why is Partial Discharge (PD) Testing Necessary for

PD testing of inverter-driven motors Inverter-driven motors in electric vehicles (EVs) are subjected to momentarily high voltages due to switching operation.

Active Discharge and Pre-charge of EV High Voltage Power

RELAY 1 prevents leakage current in Disconnect Mode. SW1 is used to detect SHORT circuit on HV DC Bus. Capacitor is charging thru SW1 that is activated by MCU. When the HV DC Bus is

An Active Discharge Scheme for DC-Bus Capacitors in EV

This article presents a cost-effective and space-efficient solution that enables fast capacitor discharge by operating the inverter''s SiC mosfets-either discrete devices or power

Safe Handling High Voltage Battery Systems

In either case, all high voltage components are effectively cut off from the power supply, which in turn creates a safe environment in which the

Enabling Smarter DC Link Discharge in EV Traction Inverters

Explore the live demonstration of the GD3162''s DC Link discharge feature and discover how NXP is enabling smarter, safer and more efficient EV systems through its latest

A Partial Discharge Study of Medium-Voltage Motor Winding

But their high switching dv/dt can increase the voltage stress on motor windings and cause partial discharges. This paper presents a partial discharge study of a medium-voltage form-wound

What is Partial Discharge in an Inverter-Driven Motor? | Hioki

High-voltage inverter-driven motors, such as those found in EVs, are more prone to partial discharge phenomena. In general, partial discharge occurs when a voltage greater than

Active Discharge and Pre-charge of EV High Voltage Power

Active Discharge & Pre-charge with ST''s latest THYRISTOR solutions Complete Product range including SCR, Microcontroller, Power device and Sense & Control Analog devices

Testing and Investigation of GaN-Based High Voltage

Due to the fast switching of GaN device, high voltage slew rate or dv/dt at the inverter output gives rise to switching harmonics, higher voltage stress at the motor winding, and EMI issues in the

Piezoelectric Direct Discharge: Devices and Applications

The piezoelectric direct discharge (PDD) is a comparatively new type of atmospheric pressure gaseous discharge for production of cold plasma. The generation of

Design Method of 50kV/0–40kHz High Voltage AC Power Supply

The generation of plasma by DBD has the advantages of low environmental requirements, simple operation, wide industrial applications, and the ability to stably generate

High-voltage discharge system of EV – CMVTE

Its core purpose is to prevent the risk of electric shock and secondary hazards caused by residual voltage in the high-voltage system, and

High Voltage Inverter Design

Along with the wider application of PWM technology used in inverting and the inverse frequency fields, as well as the rapid development of IGBT, MOSFET

Miba: Discharge Resistor

Discharge Resistors – Safety and efficiency for electric mobility High-voltage systems are essential in electric vehicles, but they also pose risks. Discharge resistors play a key role in

WO2025113838A1

The present invention relates to a discharge device (1) for discharging a high-voltage circuit with an inverter output stage (2) which has at least one half-bridge (3a, 3b, 3c) which...

High-voltage discharge system of EV – CMVTE

High-voltage active discharge refers to the process in which the electric energy in the high-voltage capacitor is quickly (generally 1 ~ 2 s)

A DC-Link Hybrid Active Discharge Scheme for

This paper examines the limitations of traditional discharge techniques and proposes a novel hybrid discharge solution that combines the

High-voltage direct current

A high-voltage direct current (HVDC) electric power transmission system uses direct current (DC) for electric power transmission, in contrast with the more

A DC-Link Hybrid Active Discharge Scheme for Traction Inverters

This paper examines the limitations of traditional discharge techniques and proposes a novel hybrid discharge solution that combines the existing winding-based

High Voltage Discharger HVD 450

The HVD 450 is a unique, wear-free switching and management system for discharging high voltage DC links. Discharging is done through a discharge resistor provided by the customer.

High-voltage direct current

A high-voltage direct current (HVDC) electric power transmission system uses direct current (DC) for electric power transmission, in contrast with the more common alternating current (AC)

How to Reduce the Power Resistor for DC-Link Discharge in

The DC-Link capacitor is a part of every traction inverter and is positioned in parallel with the high-voltage battery and the power stage (see Figure 1). The DC-Link capacitor has several

High-voltage discharge system of EV – CMVTE

Its core purpose is to prevent the risk of electric shock and secondary hazards caused by residual voltage in the high-voltage system, and to ensure the safety of personnel in

Why Pre-Charge Circuits are Necessary in High-Voltage

In a high voltage system, a typical block diagram may consist of two high current contactors with a separate pre-charge contactor, and a DC link capacitor in parallel with a load (for example,

High Voltage Capacitor and Power Supply Applications

DC Filter A DC filter is used to create a smooth voltage from irregular or pulsating voltage sources. High peak currents and ripple currents are dissipated by capacitors storing and

What is high-voltage active discharge?

High-voltage active discharge refers to the process in which the electric energy in the high-voltage capacitor is quickly (generally 1 ~ 2 s) released to a safe level (the high voltage is reduced to below 60 V) through a special discharge circuit and control strategy after the high-voltage system of the EV is powered off.

What is a high-voltage DC link?

Image used courtesy of Adobe Stock High-voltage DC links are central to a wide range of power electronic systems in electric and hybrid vehicles—including inverters relying on large capacitors (e.g 1 mF) to stabilize the voltage, reduce ripple, and support efficient control and operation.

Why is high voltage active discharge important?

Therefore, the high-voltage active discharge function becomes an indispensable part of the EV safety design. These risks can be avoided by actively discharging the system voltage to a safe level quickly. Considering personal safety, there are clear requirements for the high voltage safety of EV at the standard level.

Why is high-voltage active discharge important in EV safety design?

If there is no effective discharge mechanism, the residual voltage may cause electric shock accidents, and even lead to serious consequences such as fire. Therefore, the high-voltage active discharge function becomes an indispensable part of the EV safety design.

How to safely discharge a high-voltage bus capacitor without external components?

The proposed method utilizes a constant power tracking approach with pulse frequency modulation to safely discharge the high-voltage bus capacitor without external components. When the car is off, the proposed scheme discharges a 1000-V dc bus within 1 s using a single low-side SiC switch to test a worst-case scenario.

What is a DC-link capacitor in a traction inverter?

Figure 1. Simplified Block Diagram of a Traction Inverter The DC-Link capacitor is a part of every traction inverter and is positioned in parallel with the high-voltage battery and the power stage (see Figure 1). The DC-Link capacitor has several functions, such as to help smooth voltage ripples, filtering unwanted harmonics and reducing noise.