I tried using this code to output AC power from one H bridge and then another, switching every second, but when I connected a motor to it, it just seemed to output direct current. This is the code I was using (by the way, the motor controller I'm using has a max frequency of 20khz, so that's not the problem as far as I know):

int EnablePin = 8;
int duty;
int PWMPinA;
int PWMPinB;

const byte CPin = 0;  // analog input channel
int CRaw;      // raw A/D value
float CVal;    // adjusted Amps value

void setup() {                
  pinMode(EnablePin, OUTPUT);     
  pinMode(PWMPinA, OUTPUT);
  pinMode(PWMPinB, OUTPUT);
}

void loop() {

  digitalWrite(EnablePin, HIGH);

  for(duty = 0; duty <= 20000; duty += 1){

    PWMPinA=11;  // Timer2
    PWMPinB=3;
    analogWrite(PWMPinA, 255);
    analogWrite(PWMPinB, 0);
    delayMicroseconds(50);

    if(PWMPinA == 11) {
      PWMPinA = 3;
      PWMPinB = 11;
    } else {
      PWMPinA = 11;
      PWMPinB = 3;
    }

  }
  for(duty = 20000; duty>=0; duty -= 1){
 
    PWMPinA=6;  // Timer2
    PWMPinB=5;
    analogWrite(PWMPinA, 255);
    analogWrite(PWMPinB, 0);
    delayMicroseconds(50); 
  
    if(PWMPinA == 6) {
      PWMPinA = 5;
      PWMPinB = 6;
    } else {
      PWMPinA = 6;
      PWMPinB = 5;
    }
  }
}

I tried using this code to output AC power from one H-bridge and then another, switching every second, but when I connected a motor to it, it just seemed to output direct current. This is the code I was using (by the way, the motor controller I'm using has a max frequency of 20 kHz, so that's not the problem as far as I know):

int EnablePin = 8;
int duty;
int PWMPinA;
int PWMPinB;

const byte CPin = 0;  // analog input channel
int CRaw;      // raw A/D value
float CVal;    // adjusted Amps value

void setup() {                
  pinMode(EnablePin, OUTPUT);     
  pinMode(PWMPinA, OUTPUT);
  pinMode(PWMPinB, OUTPUT);
}

void loop() {

  digitalWrite(EnablePin, HIGH);

  for(duty = 0; duty <= 20000; duty += 1){

    PWMPinA=11;  // Timer2
    PWMPinB=3;
    analogWrite(PWMPinA, 255);
    analogWrite(PWMPinB, 0);
    delayMicroseconds(50);

    if(PWMPinA == 11) {
      PWMPinA = 3;
      PWMPinB = 11;
    } else {
      PWMPinA = 11;
      PWMPinB = 3;
    }

  }
  for(duty = 20000; duty>=0; duty -= 1){
 
    PWMPinA=6;  // Timer2
    PWMPinB=5;
    analogWrite(PWMPinA, 255);
    analogWrite(PWMPinB, 0);
    delayMicroseconds(50); 
  
    if(PWMPinA == 6) {
      PWMPinA = 5;
      PWMPinB = 6;
    } else {
      PWMPinA = 6;
      PWMPinB = 5;
    }
  }
}

I tried using this code to output AC power from one H bridge and then another, switching every second, but when I connected a motor to it, it just seemed to output direct current. This is the code I was using (by the way, the motor controller I'm using has a max frequency of 20khz, so that's not the problem as far as I know):

int EnablePin = 8;
int duty;
int PWMPinA;
int PWMPinB;

const byte CPin = 0;  // analog input channel
int CRaw;      // raw A/D value
float CVal;    // adjusted Amps value

void setup() {                
pinMode(EnablePin, OUTPUT);     
pinMode(PWMPinA, OUTPUT);
pinMode(PWMPinB, OUTPUT);
 
}

void loop() {

digitalWrite(EnablePin, HIGH);

for(duty = 0; duty <= 20000; duty += 1){

PWMPinA=11;  // Timer2
PWMPinB=3;
analogWrite(PWMPinA, 255);
analogWrite(PWMPinB, 0);
delayMicroseconds(50);

if(PWMPinA == 11) {
  PWMPinA = 3;
  PWMPinB = 11;
} else {
  PWMPinA = 11;
  PWMPinB = 3;
}

}
for(duty = 20000; duty>=0; duty -= 1){
 
  PWMPinA=6;  // Timer2
  PWMPinB=5;
  analogWrite(PWMPinA, 255);
  analogWrite(PWMPinB, 0);
  delayMicroseconds(50); 
  
  if(PWMPinA == 6) {
  PWMPinA = 5;
  PWMPinB = 6;
} else {
  PWMPinA = 6;
  PWMPinB = 5;
}
  }
}

I tried using this code to output AC power from one H bridge and then another, switching every second, but when I connected a motor to it, it just seemed to output direct current. This is the code I was using (by the way, the motor controller I'm using has a max frequency of 20khz, so that's not the problem as far as I know):

int EnablePin = 8;
int duty;
int PWMPinA;
int PWMPinB;

const byte CPin = 0;  // analog input channel
int CRaw;      // raw A/D value
float CVal;    // adjusted Amps value

void setup() {                
  pinMode(EnablePin, OUTPUT);     
  pinMode(PWMPinA, OUTPUT);
  pinMode(PWMPinB, OUTPUT);
}

void loop() {

  digitalWrite(EnablePin, HIGH);

  for(duty = 0; duty <= 20000; duty += 1){

    PWMPinA=11;  // Timer2
    PWMPinB=3;
    analogWrite(PWMPinA, 255);
    analogWrite(PWMPinB, 0);
    delayMicroseconds(50);

    if(PWMPinA == 11) {
      PWMPinA = 3;
      PWMPinB = 11;
    } else {
      PWMPinA = 11;
      PWMPinB = 3;
    }

  }
  for(duty = 20000; duty>=0; duty -= 1){
 
    PWMPinA=6;  // Timer2
    PWMPinB=5;
    analogWrite(PWMPinA, 255);
    analogWrite(PWMPinB, 0);
    delayMicroseconds(50); 
  
    if(PWMPinA == 6) {
      PWMPinA = 5;
      PWMPinB = 6;
    } else {
      PWMPinA = 6;
      PWMPinB = 5;
    }
  }
}