LNG: TESLARATI

Tesla’s combined Model S, Model X, and Model 3 sales in Germany have put the all-electric car maker within striking distance of Porsche after only two months on the European market. Tesla’s total sales of 2,367 vehicles in March were short a mere 356 vehicles to match the sales of the German auto maker, according to monthly data published by the German Federal Motor Transport Authority.

The March 2019 sales numbers in Germany further represent a five-fold increase over Tesla’s March 2018 sales in the country, altogether a nod to Tesla’s luxury performance and energy efficiency appeal in a country known for its competitive auto market. Tesla’s numbers also topped those of other major manufacturers’ sales in Germany including Jaguar, Jeep, Honda, and Land Rover.

It should be noted, however, that Mercedes-Benz and BMW vehicles’ market performance remained far beyond all other car manufacturers in the country. BMW, for example, sold 25,458 vehicles in February – around ten times more than Tesla’s or Porsche’s sales number. Porsche’s March sales also dropped 9.5 percent from February, something the classic German car maker ties to changing European regulations, the decision to stop diesel car production, and changeovers in its 911 and Macan models.

Tesla may still be ramping up its presence in the German auto market, but the all-electric car maker’s product value is already acknowledged as outweighing its competitors. The Model S was ranked highest for resale values in comparison to Germany’s best luxury sedans, according to a list published by Schwacke, a company which analyzes and ranks the approximate residual value of used motor vehicles in the German market. This valuation was mirrored in the US by Kelly Blue Book in awarding the Tesla Model 3 with its 2019 Best Resale Value Award.

Tesla has a notable lead in the electric vehicle market and has been successfully ramping up its European sales efforts over the last year. Its vehicles now represent 30% market share of all battery electric vehicles in Norway out of the near 60% that BEV’s represent in total car sales in the country.

Once the more affordable Model 3 Standard Range is launched in Europe later this year, Tesla’s sales in the region will likely see continued growth. Porsche, in the meantime, has continued its development of the all-electric Taycan set for reveal and production in September, a move which may keep Tesla on its toes for market share.

Tesla President of Automotive Jerome Guillen and Shanghai Deputy Mayor Wu Qing held a meeting on Tuesday, where they discussed the progress of Gigafactory 3’s buildout in the Shanghai Lingang Industrial Zone. The Tesla executive and Chinese official shared in-depth updates on the project, including an estimated timeframe for the installation of the facility’s vehicle production lines.

Local news agency Laoyaoba, which covered the meeting, pointed out that the installation of vehicle production equipment could start as early as May, when the initial stages of the facility are expected to be completed. This represents a notable accomplishment for both the electric car maker and its construction partner, considering that Gigafactory 3 is one of the most ambitious foreign-owned projects that have been attempted in China.

Based on this recent update, it appears that Tesla intends to start the installation of production equipment in Gigafactory 3 while other areas of the 864,885-square meter site are still under construction. This is a bold and risky move on Tesla’s part, but if the electric car maker pulls it off, such a strategy will likely help the company meet its goal of starting Model 3 production in Gigafactory 3 by the end of 2019.

Guillen and Wu also discussed the recent milestones of the project. Construction work in Gigafactory 3 started back in January, and since then, the first phase of the buildout has been moving along very well. Pile foundation structures have been completed, and the steel structure construction of the factory has begun. Multiple sets of steel roof grids have also been completed.

Gigafactory 3 is under an incredibly ambitious timeline. During the groundbreaking ceremony of the facility, Elon Musk noted that he expects the factory to be completed around summer. This timeframe was mocked by Tesla’s skeptics, many of whom claimed that such a target was impossible. This was until Shanghai official Chen Mingbo stated that Gigafactory 3 was on track to be completed by May, a date even more ambitious than Musk’s estimate.

Part of the reason behind Gigafactory 3’s rapid progress is the support that Tesla enjoys from the Chinese government. Tesla’s presence in China is beneficial to the country, which is aggressively pushing for the adoption of electric vehicles. In a statement to Xinhua News, Cui Dongshu, secretary general of the China Passenger Car Association, noted that Tesla’s China production will have a “catfish effect” in the country’s auto industry, pushing domestic carmakers to expedite and improve their own electric vehicles to compete with the Silicon Valley-based electric car maker.

China’s support for Tesla was evident during Musk’s visit to the country. When Musk met with Chinese Premier Li Keqiang in Beijing, the CEO was received at the Tower of Violet Light, a place that is usually reserved for dignitaries. Li also proved receptive to Musk’s ambitious ideas, even offering the CEO a “Chinese Green Card” so that he can pursue his vision in the country freely.

Tesla has invented a technique for increasing its all-electric vehicles’ power and torque by simply adjusting the shape of some of its electric motor’s components.

A recently published US patent application titled “Geometry of Rotor End Ring and Stator End Turns” describes how Tesla accomplishes this. According to the application, certain internal parts of an electric motor can be modified to reduce power losses from leaks in the magnetic field that effectively make the motor smaller.

The primary components of electric motors – the rotor and the stator – together generate the motion used to operate a vehicle. Simply, a magnetic field produced by electricity running through copper wires in the stator cause the magnetized bars of the rotor to spin. However, when the motor is operating at high speed, some of the electromagnetic force is lost, reducing the motor’s power.

Tesla has identified two places where this loss can be reduced – the end parts of the stator and rotor. The copper wiring in these parts is wrapped around cutout shapes, and after some testing, Tesla’s engineers learned that different shapes give different results. Per the application, “geometries for rotor end ring and stator end turns can be chosen in a way that improves performance or other characteristics of the motor.”

Overall, electric current flow becomes concentrated in different spots on the motor depending on the ‘geometry’ of these parts, thus an opportunity to limit any losses has presented itself by controlling where the concentrations happen. Tesla has filed this application to protect the process (‘method’) of building a motor with the geometry knowledge made part of the design and testing.

The process is described in the application’s Abstract as follows:

“A method of making an AC induction motor includes: providing a rotor and a stator for the AC induction motor; determining, for different geometries of an end ring of the rotor, a location of a first centroid of current density in the end ring; determining, for end turns of the stator, a location of a second centroid of current density in the end turns; selecting a geometry for at least the endring of the rotor so that an axial distance between the first centroid of current density and the second centroid of current density is minimized; and assembling the AC induction motor, wherein the end turns and the end ring have the selected geometries.”

Although the publication was only recently available to the public, this application is related to another patent that was filed in 2015, meaning that Tesla is likely already implementing the findings and invention into their manufacturing process. This is rather unsurprising considering the company’s tendency to constantly improve its vehicles’ components as soon as the upgrades are available. Elon Musk himself has mentioned this on Twitter, stating that Tesla’s electric cars are “partially upgraded every month as soon as a new subsystem is ready for production.” This was also highlighted by President of Automotive Jerome Guillen last December, when he highlighted that the designs of Tesla’s batteries are always evolving.

Automotive teardown expert Sandy Munro concluded following a thorough analysis of an early-production Model 3 that the vehicle’s electric motors are among the best in the industry today. In an appearance at YouTube’s Autoline TV, Munro noted that the Model 3’s electric motors are more efficient and more cost-effective than the motors found in the Chevy Bolt EV and the BMW i3. “They’ve got magic. The electric motor is smaller and lighter than everybody else, but outperforms everybody,” Munro said.

The full text of Tesla’s “Geometry of Rotor End Ring and Stator End Turns” patent can be accessed here.