Electrical motor load controller and control methods therefor

An electrical load controller for controlling a start of a first electrical load and a second electrical load, wherein

• a priority ranking of the second electrical load is lower than that of the first electrical load,
• the first electrical load sends a first electrical load notification signal to the second electrical load and starts when a prescribed first electrical load delay time has elapsed after the first electrical load notification signal is sent to the second electrical load,
• the second electrical load sends a second electrical load notification signal to the first electrical load and starts when a prescribed second electrical load delay time has elapsed after the second electrical load notification signal is sent to the first electrical load;
• and
• the second electrical load starts without waiting for the elapse of the second electrical load delay time, if the second electrical load receives the first electrical load notification signal after the second electrical load notification signal is sent.

An electrical load controller for controlling a start of a first electrical load, a second electrical load and a third electrical load, wherein

• a priority ranking of the second electrical load is lower than that of the first electrical load and the priority ranking of the third electrical load is lower than that of the second electrical load;
• the second electrical load sends a second electrical load notification signal to the first and third electrical loads and starts when a first prescribed second electrical load delay time has elapsed after the second electrical load notification signal is sent to the first and third electrical loads;
• the third electrical load sends a third electrical load notification signal to the first and second electrical loads and starts when a prescribed third electrical load delay time has elapsed after the third electrical load notification signal is sent to the first and second electrical loads;
• the starting of the third electrical load is stopped if the third electrical load receives the second electrical load notification signal after the third electrical load notification signal is sent;
• the third electrical load sends a third electrical load completion signal to the first and second electrical loads when the starting of the third electrical load is stopped;
• and
• the second electrical load starts when a second prescribed second electrical load delay time has elapsed after the third electrical load completion signal is received.

An electrical load controller for controlling a start of a first electrical load, a second electrical load and a third electrical load, wherein

• a priority ranking of the second electrical load is lower than that of the first electrical load and a priority ranking of the third electrical load is lower than that of the second electrical load;
• the third electrical load sends a third electrical load notification signal to the first and second electrical loads when the demand to start the third electrical load is generated and starts when a prescribed first delay time has elapsed after the third electrical load notification signal is sent to the first and second electrical loads, and the third electrical load stops sending the third electrical load notification signal and is stopped from starting if the third electrical load receives a first electrical load notification signal from the first electrical load or receives a second electrical load notification signal from the second electrical load;
• the second electrical load sends a second electrical load notification signal to the first and third electrical loads when a demand to start the second electrical load is generated, and starts when a prescribed second delay time has elapsed after the second electrical load notification signal is sent to the first and third electrical loads, and the second electrical load starts, without waiting for the elapse of the prescribed second delay time, if the second electrical load receives the first electrical load notification signal after sending the second electrical load notification signal if the second electrical load does not receive the third electrical load notification;
• and
• the first electrical load starts when a demand to start the first electrical load is generated if the first electrical load does not receive the second and the third electrical load notification signals, and if the demand to start the first electrical load is generated within a prescribed third delay time after the first electrical load stops receiving the third electrical load notification, the first electrical load sends the first electrical load notification signal to the second and third electrical loads and starts when a prescribed fourth delay time has elapsed after the first electrical load notification signal is sent to the second and third electrical loads.

An electrical load control method of controlling at least a first electrical load and a second electrical load, wherein a first prescribed time period is a duration of time over which an inrush current, generated when the first electrical load is started, decreases to a prescribed value, the method comprising:

• generating a demand to start the second electrical load;
• sending a second electrical load notification signal to the first electrical load when the demand to start the second electrical load is generated;
• starting the second electrical load when a second prescribed time period has elapsed after the second electrical load notification signal is sent to the first electrical load;
• generating a demand to start the first electrical load;
• and
• starting the first electrical load immediately after the demand to start the first electrical load is generated if the first electrical load has not received the second electrical load notification signal when the demand to start the first electrical load is generated,
• wherein a third prescribed time period is required to transmit the second electrical load notification signal from the second electrical load to the first electrical load,
• the second prescribed time period is longer than the third prescribed time period, and
• the first prescribed time period is shorter than the second prescribed time period minus the third prescribed time period.

An electrical load control method of controlling at least a first electrical load and a second electrical load, wherein the second electrical load has a lower priority ranking than the first electrical load, the method comprising:

• generating a demand to start the first electrical load;
• sending a first electrical load notification signal to the second electrical load when the demand to start the first electrical load is generated;
• starting the first electrical load when a prescribed first electrical load delay time has elapsed after the first electrical load notification signal is sent to the second electrical load;
• generating a demand to start the second electrical load;
• sending a second electrical load notification signal to the first electrical load when the demand to start the second electrical load is generated;
• starting the second electrical load when a prescribed second electrical load delay time has elapsed after the second electrical load notification is sent to the first electrical load;
• and
• starting the second electrical load without waiting for the elapse of the prescribed second electrical load delay time if the second electrical load receives the first electrical load notification signal after the second electrical load notification signal is sent.

An electrical load control method of controlling at least a first electrical load, a second electrical load and a third electrical load, wherein the second electrical load has a lower priority ranking than the first electrical load, and the third electrical load has a lower priority ranking than the second electrical load;

• the method comprising:
• generating a demand to start the second electrical load;
• sending a second electrical load notification signal to the first and third electrical loads when the demand to start the second electrical load is generated;
• starting the second electrical load when a first prescribed second electrical load delay time has elapsed after the second electrical load notification signal is sent to the first and third electrical loads;
• generating a demand to start of the third electrical load;
• sending a third electrical load notification signal to the first and second electrical loads when the demand to start the third electrical load is generated;
• starting the third electrical load when a prescribed third electrical load delay time has elapsed after the third electrical, load notification signal is sent to the first and second electrical loads;
• stopping the third electrical load from starting if the third electrical load receives the second electrical load notification signal after the third electrical load notification signal is sent;
• sending a third electrical load completion signal from the third electrical load to the first and second electrical loads when the starting of the third electrical load is stopped;
• and
• starting the second electrical load when a second prescribed second electrical load delay time has elapsed after the third electrical load completion signal is received.

An electrical load control method of controlling at least a first electrical load, a second electrical load and a third electrical load, wherein the second electrical load has a lower priority ranking than the first electrical load, and the third electrical load has a lower priority ranking than the second electrical load;

• the method comprising:
• generating a demand to start the third electrical load;
• sending a third electrical load notification signal to the first and second electrical loads when the demand to start the third electrical load is generated;
• starting the third electrical load when a prescribed first delay time has elapsed after the third electrical load notification signal is sent to the first and second electrical loads;
• stopping the transmission of the third electrical load notification signal and also stopping the third electrical load from starting when the third electrical load receives a first electrical load notification signal from the first electrical load or a second electrical load notification signal from the second electrical load;
• sending a second electrical load notification signal to the first and third electrical loads when the demand to start the second electrical load is generated;
• starting the second electrical load when a second delay time has elapsed after the second electrical load notification signal is sent to the first and third electrical loads;
• starting the second electrical load without waiting for the elapse of the second delay time if the second electrical load receives the first electrical load notification signal after sending the second electrical load signal when the second electrical load stops receiving the third electrical load notification signal;
• starting the first electrical load when a demand to start the first electrical load is generated when the first electrical load does not receive the second and third electrical load notification signals;
• sending the first electrical load notification signal to the second and third electrical loads if a demand to start the first electrical load is generated within a prescribed third delay time after the first electrical load stops receiving the third electrical load notification signal;
• and
• starting the first electrical load when a prescribed fourth delay time has elapsed after the first electrical load notification signal is sent to the second and third electrical loads.