This articles provides an explanation of virtual machines power saving settings and options to prevent the settings from suspending a virtual machine.

• The virtual machine is suspended
• The guest operating system is in sleep, standby, or suspend power states
• The virtual machine running Windows is suspended every 5 minutes of inactivity whenever the host is running on battery power

• Disable power management and screen savers in the guest operating system
  
  Note: This is a best practise.
  
  
• For Workstation, deselect the Report battery information to guest setting in the Options tab in the virtual machine settings.
• For Fusion, deselect the Pass power status to VM setting in the Advanced pane in the virtual machine settings.
• Adjust the power management settings in the guest operating system to be less aggressive when the computer is running on battery power.