Hello from Shanghai, Kingser Electric | Cypress Semiconductor
Hello from Shanghai, Kingser Electric
June 02, 2010
I went to visit Kingser, a E-bike motor controller company, outside Shanghai and I got a demo of their new controller using a PSoC3. Their Chief Designer is Mt Yang and he has been very successful with PSoC1. Here is his picture.
It only took them about 1 or 2 months to implement their PSoC3 solution. My Yang is a natural Engineer and I was impressed that when we got to his factory that he couldn’t wait to get his up to his Lab and show us his new project. As China moves from being a contract manufacturer to designing their own products, it has been a hard transformation for many Chinese Engineers. Well not Mr Yang. He is an Engineer’s Engineer. His knowledge and passion for motor control became obvious when he started talking about sinusoidal control. He is most likely one of the two best PSoC users in China.
He likes using PSoC because he can quickly respond to different market changes. The transformation to six phase from three was trivial with PSoC. We spent time discussing building a component for 3 phase sinusoidal control. He is riding the wave of the state of the art.
Now for the Physics. There is a harmonic component to the angular torque in a motor of generator. This can be seen if you run an old bike light generator by hand. If the motor is built with n*3 phases then these torques cancel each other out. Below is a picture of Mr. Yang explaining the theory to me.
On the way home was given a choice of a 3-hour car ride or 1-hour bullet train ride (up to 200 mph). It really was a no brainer.
Here is a video of the motor demo
And for George Saul, if anyone else publicly said they would convert your new Harley to electric, you would know it was a joke. With me you really can’t be sure can you?