Control apparatus for internal combustion type electric locomotive

• US 6,087,791 A
• Filed: 03/15/1999
• Issued: 07/11/2000
• Est. Priority Date: 10/09/1998
• Status: Expired due to Term

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Maruyama, Takafumi
• Primary Examiner(s): Witkowski, Stanley J.
• Assistant Examiner(s): Leykin, Rita
• Application Number:
  US09/267,598
• Time in Patent Office: 484 Days
• Field of Search: 318/140, 318/141, 318/801, 318/146, 318/151, 318/153, 318/156, 318/477, 322/16, 322/19, 322/28
• US Class Current: 318/140
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 2220/12 Induction machines
• CPC Class Codes: B60L 50/13 using AC generators and AC motors
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

To obtain a control apparatus for a Diesel-electric locomotive that harmonizes an engine power with a torque command of an induction motor, which is a load of an engine, in the Diesel-electric locomotive and avoids an overload of the engine.

A cooperative controller 15 is provided, the controller 15 which receives a notch signal N, an engine speed command value n* corresponding to the notch signal N, an engine speed n, and rotating speed fr of an induction motor 17, calculates a torque command value Tp corresponding to the engine speed n from torque command values before and after the notch signal changing during response time for control of the engine speed if the notch signal N changes, and calculates the torque command value Tp corresponding to the notch signal N after a notch is changed, except the case thereof. Furthermore, the torque command value Tp is outputted to an inverter controller 20.

Claims

1. A control apparatus for an internal combustion type electric locomotive that converts power, generated by an AC generator driven by an engine, into DC power with a rectifier, further converts the DC power into AC power with a power converter, and controls driving of an induction motor for promoting rolling stocks, comprising:

a master controller outputting a notch signal determining engine speed;

an engine speed command generator generating an engine speed command value corresponding to the notch signal;

output power command value calculation means for receiving the notch signal outputted from the master controller, the engine speed command value, the engine speed, and the speed of the induction motor, calculating an output power command value of the induction motor according to the engine speed from torque command values before and after the notch signal changing during response time for control of the engine if the notch signal changes, and calculating the output power command value corresponding to the notch signal after the notch signal changing except the case thereof; and

power converter control means outputting a power control signal according to this output power command value to the power converter.

2. A control apparatus for an internal combustion type electric locomotive according to claim 1 further comprising:

an engine power command generator outputting an optimum engine power according to engine speed as an engine power command;

output power limitation value generation means subtracting power for auxiliary equipment, which is consumed in an auxiliary equipment circuit that is an electric load of the engine, from the engine power command, and generating an output power limitation value on the basis of the subtracted value; and

output power command limitation means limiting the output power command value calculated in the output power command value calculation means with this output power limitation value generated and outputting the output power command value to the power converter control means.

3. A control apparatus for an internal combustion type electric locomotive according to claim 1, wherein output power command value calculation means calculates an output power command value according to the engine speed from torque command values before and after the notch signal changing during the response time for control of the engine speed if the notch signal changes in the increasing direction, and calculates an output power command value corresponding to the notch signal after the notch being changed, except the case thereof.

4. A control apparatus for an internal combustion type electric locomotive according to claim 2, wherein output power limitation value generation means comprises:

a subtractor subtracting power for auxiliary equipment, which is consumed in an auxiliary equipment circuit that is an electric load of the engine, from the engine power command; and

a divider that generates a torque limitation value as an output power limitation value by dividing the subtracted value by angular velocity of the induction motor and outputs the torque limitation value to the output power command limitation means.

5. A control apparatus for an internal combustion type electric locomotive according to claim 4, wherein output power limitation value generation means comprises torque-current transform means transforming a torque limitation value into a current limitation value, and outputs this current limitation value to the output power command limitation means as an output power limitation value.