1. Repair Procedure for Burnt IGBT or Fuse on Circuit Board If the current fuse or IGBT is burnt, you cannot immediately replace the component. You must confirm that the following other components are in normal condition before proceeding with the replacement; otherwise, the IGBT and fuse will burn out again. 1. Visually check if … Read more
DeepSeek has unlimited potential. DeepSeek is like a treasure trove, always providing surprising answers. Today, I plan to squeeze more potential from DeepSeek. I assume the role of a founder of a device company, desperately needing wafer success. The last resort it offered was unexpected; DeepSeek has even entrusted hope to a “deity.” Asking the … Read more
Research Content As part of electric vehicles, motors and controllers are usually mass-produced. To reduce costs, controllers typically adopt modular components for assembly, facilitating automated production, testing, and maintenance. Reducing the number and variety of parts can also lower inventory and management costs. A 600 V/36 kW/5600 rpm permanent magnet synchronous motor controller has been … Read more
With the continuous advancement of the “dual carbon” strategy, the integration of photovoltaic and energy storage has become an important engine for promoting the transformation of new energy. In this trend, the system has higher requirements for the precision of power regulation, conversion efficiency, and operational reliability. As the core power electronic conversion unit, the … Read more
IGBT with Built-in Fast Recovery Diode (FRD) IGBT product lineup includes types with built-in fast recovery diodes (hereinafter referred to as “FRD”). In inverter and motor drive applications using IGBT, the diode is also used as a path for the reverse current generated during switching. This diode is known as a “freewheeling diode,” and is … Read more
The Huawei DriveONE motor, featured in the Avita 11, is one of its core highlights, providing not only robust power support but also optimizing vehicle energy efficiency and driving experience through highly integrated and intelligent control technologies. The Huawei DriveONE motor is an efficient, integrated electric drive system developed by Huawei Technologies Co., Ltd. This … Read more
Power semiconductors are the core of energy conversion and circuit control in electronic devices, primarily used for changing voltage and frequency, as well as DC to AC conversion. Power semiconductors can be divided into two main categories: Power ICs (Power Integrated Circuits) and Power Discrete Devices (including power modules). Power devices refer to the discrete … Read more
After 18 months of rampant semiconductor price increases, the market is beginning to “cool down.” The recent order cuts by smartphone manufacturers such as Xiaomi, OPPO, and vivo indicate this trend, and it is reported that Samsung may also reduce its smartphone production by 30 million units to 280 million units this year. Recently, laptop … Read more
The inverter circuit board is a core component of the inverter, responsible for controlling and regulating its operation. This article will provide a detailed introduction to various components on the inverter circuit board, including resistors, capacitors, inductors, diodes, transistors, IGBTs, optocouplers, and crystal oscillators. 1. Resistors Resistors are commonly used components on circuit boards, used … Read more
(1) The drive waveform of soft switch welding machines rises and falls at an angle, as shown in the figure below. The waveform of hard switch machines is like a single tube wave, rising and falling straight. Issues with absorption can cause spikes in the waveform. During maintenance, some waveforms may be unfamiliar; if the … Read more