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| en:ev:motors [2020/05/20 13:16] – Ruudi s | en:ev:motors [2020/07/20 09:00] (current) – external edit 127.0.0.1 | ||
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| AC induction motor is best for big power and torque but somewhat not so good at efficiency. Brushless Synhronous motors (BLDC) are little bit better at that but sometimes it is more expensive to manufacture them because they need neodymium magnets. As we now that automotive engineers have two choices about drive motors. BMW, Koreans, Japanese manufacturers have chosen brushless synchronous motors Audi has AC induction motors. Synchronous motors allow the car to drive further on one charge because of better efficiency. | AC induction motor is best for big power and torque but somewhat not so good at efficiency. Brushless Synhronous motors (BLDC) are little bit better at that but sometimes it is more expensive to manufacture them because they need neodymium magnets. As we now that automotive engineers have two choices about drive motors. BMW, Koreans, Japanese manufacturers have chosen brushless synchronous motors Audi has AC induction motors. Synchronous motors allow the car to drive further on one charge because of better efficiency. | ||
| At year 2020 most of electric cars electrical systems work at 400V. Only one manufacturer Porche has 800V electrical system. | At year 2020 most of electric cars electrical systems work at 400V. Only one manufacturer Porche has 800V electrical system. | ||
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| + | Mitsubishi i-MiEV motor Y41 49kW 170Nm | ||
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| + | Brushless DC motor or synchronous motor with reducer and differential. Liquid cooled stator | ||
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| + | Since electric motors are wery powerful and can create wery high torque but they need three phase AC (Alternating current). EV-s have batteries as energy source but batteries as chemical energy storage devices output only DC direct current. So we need a device that can convert and invert DC into 3 phase AC. Those devices are called on small vehicles like ebikes electric motor controllers but in the car industry mainly inverters because of their ability to create AC from DC and at the same time make a sinewave like signal with suitable frequency for the motor. | ||
