Title:
【発明の名称】電気自動車
Document Type and Number:
Japanese Patent JP2671204
Kind Code:
B2
Abstract:
PURPOSE:To momentarily control the torque of an electric motor vehicle by forming a primary current command controlled in frequency and amplitude on the basis of an output of an acceleration command unit. CONSTITUTION:The output signal of a potentiometer 21 is input as a slip frequency omegas to an adder 70 to be added to the output omegar of an F/V converter 69, and the adder outputs a synchronous rotation frequency omega1. The frequency omega1 is converted to sinusoidal waves of four types having a frequency corresponding to the value of the frequency omega1 The waves are converted to analog 3-phase primary current commands controlled in amplitude on the basis of a secondary current command signal iz and an exciting current command signal i0. When the pressing angle of an accelerator pedal is increased, the value of the frequency omegas and the second current command signal iz are both increased. Accordingly, the rotating speed is abruptly increased. When the pedal is released, an analog switch 78 is opened to interrupt the signal i0.
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Inventors:
Hiroaki Takechi
Application Number:
JP14972486A
Publication Date:
October 29, 1997
Filing Date:
June 27, 1986
Export Citation:
Assignee:
YAMAHA HATSUDOKI KABUSHIKI KAISHA
International Classes:
B60L9/18; H02P27/06; (IPC1-7): B60L9/18; H02P5/41
Domestic Patent References:
| JP5746695A | ||||
| JP5788891A |
Attorney, Agent or Firm:
Masaki Yamakawa (2 outside)