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Ac drive system for electrically operated vehicle

A drive system and motor technology, applied in the direction of electric vehicles, electric braking systems, drive interaction, etc., can solve the problems that cannot be used to provide the driving force of the wheels, and the danger of sparks in the maintenance of shunt-type motors

Active Publication Date: 2006-11-15
TEXTRON INNOVATIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such shunt-type motors also present maintenance and potential spark hazard issues
To date, brushless AC drive systems have not been able to provide the motive force to drive the wheels of a vehicle such as a golf cart

Method used

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  • Ac drive system for electrically operated vehicle
  • Ac drive system for electrically operated vehicle
  • Ac drive system for electrically operated vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] figure 1 is an exemplary block diagram of an AC drive system in accordance with various embodiments. exist figure 1 An AC drive system 100 is shown in , which may include a three-phase (3φ) AC motor 110 such as an asynchronous motor or a permanent magnet motor, and a matching AC drive motor controller 120 for use in, for example, a golf cart and / or small utility vehicles on electric vehicles 190 . As described below, the AC drive system 100 may provide traction, service braking functions, and may recover and convert kinetic energy of the vehicle 190 into potential energy in the form of electromotive force (EMF).

[0053] refer to figure 1 , in response to motor controller 120 , electric motor 110 may provide motive power to drive wheels 198 , and transfer motive power or traction energy to rear wheels 198 via shaft 192 via locking differential 194 and shaft 196 . Electric motor 110 is operatively connected to electric brake 180 , which is controlled by motor control...

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PUM

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Abstract

A drive system is provided for a utility vehicle and includes an alternating-current (AC) motor for providing a drive torque. An AC motor controller receives a battery voltage signal, throttle pedal position signal, brake pedal position signal, key switch signal, forward / neutral / reverse (FNR) signal, and run / tow signal indicative of the utility vehicle being configured to be driven and being configured to be towed. The AC motor controller generates an AC drive signal for the AC motor, wherein the AC drive signal is based on the battery voltage signal, throttle pedal position signal, brake pedal position signal, key switch signal, FNR signal, and run / tow signal.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 60 / 623,149, filed October 28, 2004. The specification of the above-mentioned application is hereby incorporated by reference in its entirety. technical field [0003] The present application generally relates to a brushless alternating current (AC) drive system for powering drive wheels of an electric vehicle. Background technique [0004] The descriptions in this section merely provide background information related to the present application and may not constitute prior art. [0005] All electric motors, such as alternating current (AC) motors or direct current (DC) motors, operate on the same principle that two magnetic fields that are close to each other tend to align. One way to induce a magnetic field is to pass an electric current through a coil. If two coils carrying current are brought close to each other, the magnetic fields produced by eac...

Claims

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Application Information

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IPC IPC(8): B60L15/20
CPCB60L7/003B60L7/14B60L50/51B60L58/12B60L2210/20B60L2250/10B60L2250/16B60T7/042B60T13/58Y02T10/70Y02T10/72
Inventor 沃伦·克拉克小奥利弗·亚历山大·贝尔
Owner TEXTRON INNOVATIONS
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