@@phoneaccount6907 But Germany is the only country, outside the US, who has completeness on IC ecosystem. Germany has its own 32 bit design CPU which uses its own microcode and assembly code. It is not licensed built from US&UK as the whole world industrials did. Germany also has its complete tools in developing any project or works from the chip.
Hello fans of Mr. Ichiken and Mr. Ichiken 😀. This Hitachi inverter has already been presented by the host, but in the Japanese version. Full professionalism as usual! The three complex power transistors, or rather their configurations, are very impressive. I counted as many as 14 connections for each of them. Also the Infineon Technologies tri-core processor is very powerful. Mr. Ichiken pointed out the cooling channels and tabs that prevent the wrong assembly of power semiconductors. Like any device, it has the right to break down. I'm curious if it's worth repairing? I thought the simplest thing would be to replace the power transistors. But maybe I'm wrong. I invite fans to my new clip published on RU-vid. It presents an innovative system of functioning of the Brushless Hybrid Fast - Rotation Motor with complex coils of its own design based on the current of the sine function of two control lines. In the absence of a suitable four-phase inverter, it is powered by a frequency converter with single-phase current. Today I accelerated this mini machine to 300 Hz = 18 kRPM. Regards 😀.
Worthwhile to point out that this inverter does not use the boost-buck circuit* topology in-between the HV battery and the 3-phase drivers as Toyota does (* Boost: battery to IGBT driving motor; Buck: 3-phase rectifiers back to HV battery for charging) Also, A/C compressor's 3-phase HV motor's driver is not in this module.
Very thorough examination. It looks complicated, thus many failure points. O-rings don't last forever. It looks expensive to replace. I think it would be more reliable to do away with the many o-rings and cooling ports. Submerse the entire unit in a dielectric. And simply use a heat pump type of cooling.
There is a few bits missing in the presentation. What is the exact input voltage for this inverter? Audi is not exactly a market leader in this field, so what sort of battery voltage do they use? Does it have a power rating? The two input capacitors should be easy to measure, what capacity are they? ESR?
Is it possible to repair the TCM of an Audi Q7? The Car was flooded with water, the TCM which is placed under the seat was submerged in water. The OBD tool shows defective TCM,
Welcome to the globalized world. There are plenty of Japanese cars with SKF bearings, INA timing chains and belts, and Valeo heat exchangers. If you're impressed by a niche German hybrid using a Japanese inverter, you should research Aisin transmissions. It's all about the lowest bidder for the part specifications.
A simpler design would be better for costs, reliability and maintenance and what if those orings fail and coolant leaks inside ? Those custom bus bars look expensive im sure there would be a simpler and cheaper way to design this thing.
@@ElySky95 A simple design will take a lot of space and electric cars are short of it. Coolant pressure and temperature is not very high to cause any leak through o rings.
@@imranakhtar4478 Not necesarily, a design can be "simpler" and still take the same space and be easier to assemble and repair, it just takes more time to design.
@@ElySky95 Of course and time is money. And these are no designed to be repairable either. In most cases such designs are already in use or designed by a company for another product and whenever a new customer demands according to their specifications and requirements, the company simply use one of its previous design that fits best in their requirements. So, it is not specifically overengineered or complex in the eyes of manufacturer but the design can be totally strange and overengineered in the eyes of a technician.
